ETG/DURIANORIGINAL: English
DATE: 2013-07-03
INTERNATIONAL UNION FOR THE PROTECTION OF NEW VARIETIES OF PLANTSG EAST ASIA PLANT VARIETY PROTECTION FORUM ENEVAEAPVPFDURIAN
Durio zibethinus (L.) Murr.

GUIDELINESFOR THE CONDUCT OF TESTSFOR DISTINCTNESS, UNIFORMITY AND STABILITY

Alternative Names:
Botanical name

Durio zibethinus(L.) Murr.

EnglishDurianFrenchGermanSpanishThe purpose of these guidelines (“Test Guidelines”) is to fulfill the activities under the
EAPVP Forum on harmonization of Test Guidelines.

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TABLE OF CONTENTS
1.
2.
3.

SUBJECT OF THESE TEST GUIDELINES.......................................................................................... 3
MATERIAL REQUIRED .......................................................................................................................... 3
METHOD OF EXAMINATION .............................................................................................................. 3
3.1
3.2
3.3
3.4
3.5
3.6

4.

PAGE

Number of Growing Cycles .................................................................................................................... 3
Testing Place ........................................................................................................................................... 3
Conditions for Conducting the Examination ........................................................................................... 3
Test Design ............................................................................................................................................. 4
Number of Plants / Parts of Plants to be Examined................................................................................. 4
Additional Tests ...................................................................................................................................... 4

ASSESSMENT OF DISTINCTNESS, UNIFORMITY AND STABILITY ...................................... 4
4.1 Distinctness ............................................................................................................................................. 4
4.2 Uniformity ............................................................................................................................................... 5
4.3 Stability ................................................................................................................................................... 5

5.
6.

GROUPING OF VARIETIES AND ORGANIZATION OF THE GROWING TRIAL .................. 5
INTRODUCTION TO THE TABLE OF CHARACTERISTICS ........................................................ 7
6.1
6.2
6.3
6.4
6.5

7.
8.

Categories of Characteristics................................................................................................................... 7
States of Expression and Corresponding Notes....................................................................................... 6
Types of Expression ................................................................................................................................ 7
Example Varieties ................................................................................................................................... 7
Legend..................................................................................................................................................... 7

TABLE OF CHARACTERISTICS/TABLEAU DESCARACTÈRES/MERKMALSTABELLE/TABLA DE CARACTERES .......................................... 9
EXPLANATIONS ON THE TABLE OF CHARACTERISTICS ..................................................... 16
8.1 Explanations covering several characteristics ...................................................................................... 16
8.2 Explanations for individual characteristics ........................................................................................... 17

9. LITERATURE ........................................................................................................................................... 22
10. TECHNICAL QUESTIONNAIRE ......................................................................................................... 23

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1.

Subject of these Test Guidelines
These Test Guidelines apply to all varieties of Durio zibethinus (L.) Murr.

2.

Material Required

2.1

The competent authorities decide on the quantity and quality of the plant material required fortesting the variety and when and where it is to be delivered. Applicants submitting material from astate other than that in which the testing takes place must ensure that all customs formalities andphytosanitary requirements are complied with.
2.2

The material is to be supplied in the form of grafted trees, on a rootstock specified by thecompetent authority.
2.3 The minimum quantity of plant material, to be supplied by the applicant, should be:
5 trees.
2.4

The plant material supplied should be visibly healthy not lacking in vigor, nor affected by any

important pest or disease.
2.5 The plant material should not have undergone any treatment which would affect the expression of
the characteristics of the variety, unless the competent authorities allow or request such treatment. If it
has been treated, full details of the treatment must be given.

3.

Method of Examination

3.1

Number of Growing Cycles

3.1.1 The minimum duration of tests should normally be two independent growing cycles.
3.1.2 The growing cycle is considered to be the period ranging from the beginning of vegetative
growth or flowering, continuing through active vegetative growth or flowering and fruit development
and concluding with the harvesting of fruit.
3.2

Testing Place
Tests are normally conducted at one place. In the case of tests conducted at more than one

place, guidance is provided in TGP/9 “Examining Distinctness”.
3.3

Conditions for Conducting the Examination

3.3.1 The tests should be carried out under conditions ensuring satisfactory growth for the expressionof the relevant characteristics of the variety and for the conduct of the conduct of the examination.

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In particular, it is essential that the trees produce a satisfactory crop of fruit in each of the two growing
cycles.
3.3.2 The optimum stage of development for the assessment of each characteristic is indicated by aletter in the second column the Table of Characteristics. The stages of development denoted by eachletter are described at the end of Chapter 8.
3.3.3 The recommend method of observing the characteristic is indicated by the following key in thesecond column of the Table of characteristics:
MG: Single measurement of a group of plants or parts of plants
MS: Measurement of a number of individual plants or parts of plants
VG: Visual assessment by a single observation of a group of plants or parts of plants
VS:

Visual assessment by observation of individual plants or parts of plants

3.4

Test Design

3.4.1

Each test should be designed to result in a total of at least 5 trees

3.4.2

The design of the tests should be such that plants or parts of plants may be removed formeasurement or counting without prejudice to the observations which must be made up to the end of
the growing cycle.
3.5

Number of Plants / Parts of Plants to be Examined
Unless otherwise indicated, all observations should be made on 5 plants or parts taken fromeach of 5 plants. In the case of observation parts taken from single plant, the number of parts to betaken from each of the plants should be 2.
3.6

Additional Tests
Additional tests, for examining relevant characteristics, may be established.

4.

Assessment of Distinctness, Uniformity and Stability

4.1

Distinctness

4.1.1 General Recommendations
It is of particular importance for users of these Test Guidelines to consult the General
Introduction prior to making decisions regarding distinctness. However, the following points areprovided for elaboration or emphasis in these Test Guidelines.

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4.1.2 Consistent Differences
The differences observed between varieties may be so clear that more than one growing cycle
is not necessary. In addition, in some circumstances, the influence of the environment is not such that
more than a single growing cycle is required to provide assurance that the differences observed
between varieties are sufficiently consistent. One means of ensuring that a difference in acharacteristic, observed in a growing trial, is sufficiently consistent is to examine the characteristic in
at least two independent growing cycles.
4.1.3 Clear Differences
Determining whether a difference between two varieties is clear depends on many factors, andshould consider, in particular, the type of expression of the characteristic being examined, i.e. whether
it is expressed in a qualitative, quantitative, or pseudo-qualitative manner. Therefore, it is importantthat users of these Test Guidelines are familiar with the recommendations contained in the General
Introduction prior to making decisions regarding distinctness.
4.2

Uniformity

4.2.1 It is of particular importance for users of these Test Guidelines to consult the General
Introduction prior to making decisions regarding uniformity. However, the following points areprovided for elaboration or emphasis in these Test Guidelines:
4.2.2 For the assessment of uniformity of vegetatively propagated varieties, a population standard of
95% an acceptance probability of at least 1% should be applied. In the case of a sample size of 5plants, no off-types are allowed.

4.3

Stability

4.3.1

In practice, it is not usual to perform tests of stability that produce results as certain as those of

the testing of distinctness and uniformity. However, experience has demonstrated that, for many typesof variety, when a variety has been shown to be uniform, it can also be considered to be stable.
4.3.2 Where appropriate, or in cases of doubt, stability may be tested, either by growing a further
generation, or by testing a new stock to ensure that it exhibits the same characteristics as those shownby the previous material supplied.
5.

Grouping of Varieties and Organization of the Growing Trial

5.1

The selection of varieties of common knowledge to be grown in the trial with the candidate

varieties and the way in which these varieties are divided into groups to facilitate the assessment ofdistinctness are aided by the use of grouping characteristics.

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5.2

Grouping characteristics are those in which the documented states of expression, even where

produced at different locations, can be used, either individually or in combination with other suchcharacteristics: (a) to select varieties of common knowledge that can be excluded from the growing
trial used for examination of distinctness; and (b) to organize the growing trial so that similar varieties
are grouped together.
5.3

The following have been agreed as useful grouping characteristics:(a) Leaf blade: shape (characteristic 6)(b) Flower bud: shape (characteristic 11)(c) Fruit: shape (characteristic 22)(d) Fruit: type of spine (characteristic 30)(e) Flesh: main color (characteristic 46)

5.4

Guidance for the use of grouping characteristics, in the process of examining distinctness, isprovided through the General Introduction.
6.

Introduction to the Table of Characteristics

6.1

Categories of Characteristics

6.1.1 Standard Test Guidelines Characteristics
Standard Test Guidelines characteristics are those which are approved by UPOV for
examination of DUS and from which members of the Union can select those suitable for their
particular circumstances.
6.1.2

Asterisked Characteristics
Asterisked characteristics (denoted by *) are those included in the Test Guidelines which areimportant for the international harmonization of variety descriptions and should always be examined
for DUS and included in the variety description by all members of the Union, except when the state ofexpression of a preceding characteristic or regional environmental conditions render this inappropriate.

6.2

States of Expression and Corresponding Notes
States of expression are given for each characteristic to define the characteristic and toharmonize descriptions. Each state of expression is allocated a corresponding numerical note for easeof recording of data and for the production and exchange of the description.

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6.3

Types of Expression
An explanation of the types of expression of characteristics (qualitative, quantitative andpseudo-qualitative) is provided in the General Introduction.
6.4

Example Varieties
Where appropriate, example varieties are provided to clarify the states of expression of eachcharacteristic.
6.5

Legend(*) Asterisked characteristic – see Chapter 6 (section 6.1.2)
QL Qualitative characteristic – see Chapter 6 (section 6.3)
QN Quantitative characteristic – see Chapter 6 (section 6.3)
PQ Pseudo-qualitative characteristic – see Chapter 6 (section 6.3)
MG, MS, VG, VS : see Chapter 3 (section 3.3.3)(a)-(f) See Explanations on the Table of Characteristics in Chapter 8 ( Section 8.1)(+) See Explanations on the Table of Characteristics in Chapter 8 (Section 8.2)

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7.

Table of Characteristic

EnglishExample Varieties

Note

Phuang Mani

1

spreading

Saochomhet

2drooping

Kop Mongkon

3

1.

VG Tree: growth habit(+)(a) uprightQN

2

VG Lateral branch: attitude(+)(a) upward

Phuang Mani

1

QN

outwardSaochomhet

2

downward

Kop Mongkon

3

3.
QN

MG/ Leaf blade: length
VG
short
(b)
medium

3
5

long
4.
QN

7

MG/ Leaf blade: width
VG
narrow(b)
medium

3
5

broad
5.
QN

7

MG/ Leaf blade: ratio length/width
VGslightly elongated(b)mooderately elongated3
5strongly elongated6.

VG Leaf blade: shape(*)(b) ovate

(+)
PQ

7

Kop Takham, Kanyao Watsak

1

oblongMonthong

2

elliptic

Kop maethao, Kop Nasan

3

obovateKanyao4

Kampan Doem, Kanyao

1

7.

VG Leaf blade: shape of base(+)(b) acutePQ

obtuseThongyoidoem, Kompan Khao

2roundedDaeng Tanoi, Kop Tathuam

3

Kop Phuang, Kanyoa Watsak

3

Monthong, Chani

5

Kop Watphleng, Kampan Khao

7

8.

VG Leaf blade: length of acuminate tip(+)(b) short

QN

mediumlong

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EnglishExample Varieties

Note

9.

VG Leaf blade: curvature of tip

QN(b) absent or weak

Kanyao Watsak

1

mediumChani

2strongMonthong

3

D-24 (MAL)

1Monthong ,D99(MAL)

2

Klip Sa-mut

1

10.

VG Leaf blade : color of lower surface

PQ(b) whitish
brownish11.

VG Flower bud: shape(*)(c) ovate(+)

elliptic

Kanyao2

PQ

circular

Chat Sithong

3

12.

VG Flower bud: shape of apex(+)(c) rounded

1

PQ

acute

2

obtuse3

13.

MS Flower bud: diameter(+)(c) smallQN

3

medium

5

large

7

14.

VG Flower: width of petals(+)(d) narrow

D’baltro,Siwar(IND)

1

QN

mediumTian, Tuk, Tabe(IND)

2

broad

Malahari ,Kumik,Hortimat (IND)

3

15.
(+)
QN

VG Flower : Stigma position in relation toanther
(d)
below

1

level /equal

2

above

3

16.

VG Pedicel : length

QN

(e)

short
mediumlong

357

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English17.

VG Pedicel : shape

(+)

(e)

PQ

Type I
Type IITypeIIITypeIV18.

MS Fruit: weight(*)(e) low

QN

Note

Kanyao1

Kop SonKlin

2Luang Pomalet

3

Monthong

43

medium

5

high

7

19.

MS Fruit: length(*)(e) short

QN

Example Varieties

3

medium

5

long

7

20.

MS Fruit: width(*)(e) narrow

3

QN

medium

5

broad

7

21.

VG Fruit: depth of groove(+)(e) absent or weak

Kanyao1

QN

mediumMonthong

2strongKop Mongkon

3

22.

VG Fruit: shape(*)(e) ovateMonthong

1(+)

oblongMonkhang

2

PQ

ellipticPhuang Mani

3

circular

Kanyao4

obovateChani Namtansai

5oblateThaphapnam

623

VG Fruit : symmetry(+)

symmetric

Kanyao1

PQslightly asymmetricE-luang2strongly asymmetric

Kanyoa Wadsak

3

Monkhang

1roundedKhunthong2

cordateKop Chaynum

3

24.

VG Fruit: shape of base(+)(e) acutePQTG /DURIAN
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EnglishExample Varieties

Note

E-Lipnaitip, Monkhang

1

25.

VG Fruit: shape of the stylar end(+)(e) pointed

PQ

roundedKhunthong2

retuseKop Chainum

3

26.

MG Fruit : color of skinPQ(e) greenish yellow

1light green

2

dark green

3greyish green

4brownish green

5

brown

6

27.

VG Fruit: presence of spines(*)(e) absent

1

QL

present

928.

VG Fruit: length of spines(*)(e) short

QN

Luang Pomalet

3

Chani

5

Kop MungKon

7

Kop Chainam

3

medium

Chani

5

dense

Saochomhet

7

mediumlong

29.

VG Fruit: density of spines

QN(e) sparse30.

VG Fruit: type of spine(+)(e) Type I

Luang Pomalet

1

PQ

Type II

Chani Kanyao

2Type III

Kop Lep-yiao

3Type IV

Saochomhet

4Type V

Thaphapnam

5Type VI

Thongmai

6

E-lipnaitip

1

Luang Pomalet

931.

VG Fruit: spines around the base of the pedicel(+)(e) absent

QL

present

32.
(+)
QN

VG Fruit: spineless area around the base of thepedicel
(e)
small

1

medium

2

large

3

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English33.
QN

VG Fruit: curvature of the spine apex at thebase of the pedicel(e)straight
slightly curved

Example Varieties

Note

Luang Pomalet

1

Kop Lep-yiao

2strongly curved

3

34.

VG Friut: spines at the styler end(+)(e) absent

E-Lipnaitip

1

QL

present

Kop Lep-yiao

935.

VG Fruit: area of spines at the stylar end(+)(e) smallQN

medium

2

large

3

36.

VG Fruit: curvature of spines at the stylar end

PQ(e) straight

37
QN

1

Phuang Mani

1

slightly curved

2strongly curved

3

VG Fruit ridges along the line dividing sections
weak
1

medium2

strong38.
(+)
QN

VG Fruit: small spines along the line dividing
sections
absent or few

D145

1

medium

D8

2

many

D2

3

39.

MS Fruit: weight of peelQN(e) low

5

high

7

MS Fruit: thickness of peel(+)(e) thin3

medium

5

thick

7

41.

MS Fruit: weight of Seeds(+)(e) lowQN

3

medium

40.
QN

3

3

medium5

high7

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English42.

MS Fruit: number of seeds per fruit(+)(e) few

QN.

3
5

many

7

MS Fruit: number of aborted seeds per fruit(+)(e) few

3

medium

5

many

7

44.

MS Flesh: thickness of broadest pericarp(+)(f) thinQN

Notemedium43.
QN

Example Varieties

3

medium

5

thick

7

45.

MS Flesh: weightQN(f) low3

medium

5

high

7

46.

VG Flesh: main color(+)(f) white

Bangkhunnon

1(*)

light yellow

Khamin2

PQ

medium yellow

Monthong3

dark yellow

Metnai Kradom4

yellowish orange

Phuang Mani

5

pinkish yellow

Chomphu Sri

6

pink

7

reddish orange

8

red

9

47

VG Flesh: secondary color(+)(f) white

PQ

1light yellow

2

medium yellow

3

dark yellow

4yellowish orange

5pinkish yellow

6

pink

7

reddish orange

8

red

9

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EnglishExample Varieties

Note

Kop Thongkam

1

mediumChani

2strongChampa3

Monthong1

mediumPhuang Mani

2

strong

Chani

3

48.

VG Flesh: aroma(+)(f) weak

QN

49.

VG Flesh: sweetness(+)(f) weak

QN

50.

VG Flesh: bitterness(+)(f) weakQN

medium2

strong

3

51.

VG Flesh: texture(+)(f) fine

QN

1

Kop Phikun

1mediumKanyaoWatsak

2coarseKop Thongsuk

352.

VG Seed: shapePQ(f) oblong1

circular2

elliptic

3

53.

VG Seed: intensity of brown color

QN(f) light

54.

3

medium5

dark

7

MG Time of beginning of harvesting

(+)

early

Kradum

3

QN

mediumMonthong

5

E-nak

7

late

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8.
8.1

Explanation on the Table of Characteristics
Explanations covering several characteristics
Characteristics containing the following key in the second column of the Table ofCharacteristics should be examined as indicated below:(a) Tree: All observations on the tree should be made on the 1st preblossom stage(b) Leaf: All observations on the leaf should be made on the 4th and 5th fully developed leafof the terminal shoot.
(c) Flower bud: All observations on the flower bud should be made at the preblossom stage.
(d) Flower: All observations on the flower should be made at the blossom stage.
(e) Fruit, pedicel , fruit spine: All observations on the fruit should be made on fully formed
fruit, the pedicel and the fruit spine should be made at the tip of the spines become dry
and the area among the spines change to brown color.
(f) Flesh and seed: All observations on the flesh and seed should be made when the tip of thespines become dry and the area among the spines change to brown color.

8.2

Explanations for individual characteristics

Ad.1: Tree: growth habit

1

2

3

upright

spreadingdrooping

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Ad.2: Tree: lateral branch : attitude

1

3

2

upwarddownward

outwardAd.6: Leaf blade: shape2
oblong1ovate

3
elliptic

4
obovateAd.7: Leaf blade: shape of base

1
acute

2
obtuse3roundedTG /DURIAN
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Ad.8: Leaf blade: length of acuminate tip

1absent or short

3
long

2
mediumAd.11: Flower bud: shape

1
ovate

2
elliptic3
circular

Ad.14: Flower bud: shape of apex

1
rounded2
pointed3
obtuseTG /DURIAN
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Ad.17: Flower: width of petals

1narrow2
medium3
broad

Ad.21: Pedicel: shape

1
Type I

2Type II

3
Type III

4
Type IV

Ad.26: Fruit: depth of groove1
absent or weak3
medium5strongTG /DURIAN
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Ad.22: Fruit: shape in outline

1
ovate

2
oblong4
circular5
obovate3
elliptic

6
oblateAd 23 Fruit : symmetry

1

2

symmetric

slightly asymmetric3strongly asymmetricTG /DURIAN
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Ad.24: Fruit: shape of base

1
acute

2
rounded3
cordateAd.25: Fruit: shape of apex

1
pointed2rounded3
retuseTG /DURIAN
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Ad.31: Fruit: type of spine
The observations on the leaf should be make on the middle part of the fruit on the largest carpels

1
Type I

3
Type III2
Type II

4
Type IV

5
Type V

6
Type VI

Ad.32: Fruit: spine around the base of the pedicel1absent2
present

Ad.32: Fruit: spineless area around the base of the pedicel

1
small

2
medium3large

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Ad.39: Fruit: spine at the stylar end

2
present1
absentAd.40: Fruit: area of smaller spine at the styler end

1
small

2
medium3
large

Ad.43: Fruit: thickness of peel
Observation should be made at the market stage 5 points on the middle peel from baseto apex.
Ad.45: Flesh: thickness
Observation should be made at the market stage 5 points on the middle of fresh frombase to apex.

Ad.46: Flesh: Main color
The main color is the color covered by the largest surface area of the flesh.
The secondary color is the color covered by the second largest surface area of the flesh.
Ad.55: Time of fruit beginning of harvesting
Time of beginning to harvest is when the first fruits drop.

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9.

Literature
Plant Varieties Protection Division, 2001, “Plant Germplasm Database for Durian”

Department of Agriculture, Government Press, Bangkok, Thailand, 154 p..
Songpol Somsri, 2007, “Thai Durian”, Horticulture Research Institute, Department ofAgriculture, Chatuchak, Bangkok, Thailand, 52 p.

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10. Technical Questionnaire

TECHNICAL QUESTIONNAIRE

Page {x} of {y}Reference Number:

Application date:(not to be filled in by the applicant)
TECHNICAL QUESTIONNAIRE
to be completed in connection with an application for plant breeders’ rights
ASW13

In the case of hybrid varieties which are the subject of an application for plant
breeders’ rights, and where the parent lines are to be submitted as a part of the examination of
the hybrid variety, this Technical Questionnaire should be completed for each of the parent
lines, in addition to being completed for the hybrid variety.

1.

2.

Subject of the Technical Questionnaire
1.1

Latin name

Durio zibethinus (L.) Murr.

1.2

Common name

DurianApplicantName
Address

Telephone No.
Fax No.
E-mail address
Breeder (if different from applicant)3.

Proposed denomination and breeder’s reference
Proposed denomination(if available)
Breeder’s referenceTG /DURIAN
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TECHNICAL QUESTIONNAIRE

Page {x} of {y}Reference Number:

4 . Information on the breeding scheme and propagation of the variety
4.1 Breeding scheme
Variety resulting from:
4.1.1

4.2

Crossing(a) controlled cross(please state parent varieties)(…………………………) x (……………………….)
female parent
male parent(b) partially known cross(please state known parent variety(ies))(…………………………) x (……………………….)
female parent
male parent(c) totally unknown cross

[ ]

[ ]

[ ]

4.1.2

Mutation(please state parent variety)

[ ]

4.1.3

Discovery(please state where whenand how developed)

[ ]

4.1.4

Other
(please provide details)[ ]Method of propagating the variety

5. Characteristics of the variety to be indicated (the number in brackets refers to thecorresponding characteristic in Test Guidelines; please mark the note which best corresponds)
Characteristics

Example Varieties

Note

5.1

Lateral branch: attitude(2)

upwardPhuang Mani

1[ ]outwardSaochomhet

2[ ]downward

Kop Mongkon

3[ ]TG /DURIAN
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TECHNICAL QUESTIONNAIRE
Characteristics

Page {x} of {y}Reference Number:
Example Varieties

Note

5.2

Leaf blade: shape

(6)

ovate

Kop Takham

1[ ]oblongMonthong

2[ ]elliptic

Kop maethao

3[ ]obovateKanyao4[ ]5.3

Flower bud: shape

(11)

ovate

Klip Sa-mut

1[ ]elliptic

Kanyao2[ ]circular

Chat Sithong

3[ ]

5.4

Pedicel : length

(16)

short

3[ ]

medium

5[ ]

long

7[ ]

5.5

Pedicel : shape(17)

Type I

Kanyao1[ ]Type II

Kop SonKlin

2[ ]TypeIII

Luang Pomalet

3[ ]TypeIVMonthong

4[ ]

5.6

Fruit: shape

(22)

ovate

Monthong

1[ ]oblongMonkhang

2[ ]ellipticPhuang Mani

3[ ]circular

Kanyao4[ ]obovateChani Namtansai

5[ ]oblateThaphapnam

6[ ]TG /DURIAN
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TECHNICAL QUESTIONNAIRE
Characteristics

Page {x} of {y}Reference Number:
Example Varieties

Note

5.7

Fruit: shape of base

(24)

acute

Monkhang

1[ ]roundedKhunthong2[ ]cordateKop Chaynum

3[ ]

5.8

Fruit: shape of the stylar end(25)

pointed

E-Lipnaitip, Monkhang

1[ ]roundedKhunthong2[ ]retuseKop Chainum

3[ ]

5.9

Fruit : color of skin

(26)

greenish yellow

1[ ]light green

2[ ]dark green

3[ ]greyish green

4[ ]brownish green

5[ ]

brown

6[ ]

5.10

Fruit: type of spine(30)

Type I

Luang Pomalet

1[ ]Type II

Chani Kanyao

2[ ]Type III

Kop Lep-yiao

3[ ]Type IV

Saochomhet

4[ ]Type V

Thaphapnam

5[ ]Type VI

Thongmai

5.11

Flesh: main color

(46)

white

6[ ]

Bangkhunnon

1[ ]light yellow

Khamin2[ ]medium yellow

Monthong3[ ]dark yellow

Metnai Kradom4[ ]yellowish orange

Phuang Mani

5[ ]pinkish yellow

Chomphu Sri

6[ ]

pink

7[ ]

reddish orange

8[ ]

red

9[ ]

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TECHNICAL QUESTIONNAIRE

Page {x} of {y}Characteristics

Reference Number:
Example Varieties

Note

5.12

Time of beginning of harvesting

(50)

early

Kradum3[ ]mediumMonthong

5[ ]

E-nak

7[ ]

late

6.

Similar varieties and differences from these varieties

Please use the table, and space provided for comments, below to provide information on how
your candidate variety differs from the variety (or varieties) which, to the best of yourknowledge, is (or are) most similar. This information may help the examination authority to
conduct its examination of distinctness in a more efficient way.
Denomination(s) ofvariety(ies) similar toyour candidate variety
ExampleComments:

Characteristic(s) inwhich your candidate
variety differs from thesimilar variety(ies)

Describe the expression Describe the expressionof the characteristic(s)of the characteristic(s)for the similar
for your candidate
variety(ies)varietyTG /DURIAN
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TECHNICAL QUESTIONNAIRE

7.

Page {x} of {y}Reference Number:

Additional information which may help in the examination of the variety

7.1 In additional to the information provided in Section 5 and 6, are there any additional
characteristics which may help to distinguish the variety?
Yes [ ]No[ ](If yes, please provide details)
7.2

Are there any special conditions for growing the variety or conducting the examination?
Yes

[ ]

No

[ ]

(If yes, please provide details)

7.3

Other information

ASW 16

A representative color photograph of the variety should accompany theTechnical Questionnaire.

8.

Authorization for release(a)
Does the variety require prior authorization for release under legislation concerning
the protection of the environment, human and animal health?
Yes
(b)

[ ]

No

[ ]

Has such authorization been obtained?
Yes

[ ]

No

[ ]

If the answer to (b) is yes, please attach a copy of the authorization.

TG /DURIAN
Durian, Febuary 13, 2013
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TECHNICAL QUESTIONNAIRE

9.

Page {x} of {y}Reference Number:Information on plant material to be examined or submitted for examination.

9.1 The expression of a characteristic or several characteristics of a variety may be affectedby factors, such as pests and disease, chemical treatment (e.g. growth retardants or pesticides),effects of tissue culture, different rootstocks, scions taken from different growth phases of atree, etc.
9.2 The plant material should not have undergone any treatment which would affect theexpression of the characteristics of the variety, unless the competent authorities allow orrequest such treatment. If the plant material has undergone such treatment, full details of thetreatment must be given. In this respect, please indicate below, to the best of your knowledge,
if the plant material to be examined has been subjected to:(a)

Microorganisms (e.g. virus, bacteria, phytoplasma)

Yes [ ]No [ ](b)

Chemical treatment (e.g. growth retardant, pesticide)

Yes [ ]No [ ](c)Tissue culture

Yes [ ]No [ ](d)

Other factors

Yes [ ]No [ ]

Please provide details for where you have indicated “yes”.
……………………………………………………………

10. I hereby declare that, to the best of my knowledge, the information provided in thisform is correct:
Applicant’s nameSignature

Date[End of document]TG /DURIAN
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