cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.19944842.v1
title: Kinetic parameters estimation for increasing the efficiency of nutrient absorption in fruit trees

description: Abstract The selection of rootstocks presenting traits of interest, such as resistance to pests and diseases, and compatibility with scion capable of producing fruits attractive to the market, has revolutionized fruit crops worldwide. However, the enormous potential of plants to be selected based on their nutrient uptake efficiency is yet to be properly explored; it can be done based on knowledge about kinetic parameters such as Influx, Maximum uptake velocity, Constant ion affinity with the carrier, and Minimum concentration. The adaptation of a methodology elaborated for annual crops to set kinetic parameters, as well as the Brazilian development of the Influx software, enabled selecting not only peach rootstocks with different nutrient uptake capacities, but also observing the influence the grafting of a particular cultivar crown has on rootstock’s ability to uptake a given nutrient from the soil. Thus, fruit tree rootstocks and cultivars can always be selected based on traits desired by fruit growers and consumers, with emphasis on yield and quality of fruits. They can also be more efficient in taking up nutrients from low natural-fertility soils that require lower nutrient amounts, a fact that increases fertilizer use rationalization and reduces environmental contamination processes resulting from excessive nutrient applications.
DOI: 10.6084/m9.figshare.19944843
title: Nutrition and production of coconut palm cultivated with mineral fertilization in the state of Pará

description: Abstract Fertilization greatly affects coconut productivity; nevertheless, information on crop nutrition is relatively scarce for coconut in the state of Pará, Brazil. This study evaluated the effect of fertilization with nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg) on the nutritional status and coconut yield under the edaphoclimatic conditions of the municipality of Moju, Pará State (Brazil). The experiment was conducted for 10 years on a SOCOCO® Farm and used a randomized block design with three replications. Three levels of P, K, and Mg were used in presence and absence of N. Response to fertilization in the treatments was studied in terms of leaf concentration of macronutrients (N, P, K, Ca, Mg and S) and micronutrients (B and Cl). We also assessed the number of coconuts/plant/year, fresh albumen weight (FAW)/coconut and FAW/ha/year. The results were subjected to the analysis of variance (p&lt;0.05) and the means compared by the Tukey test. In general, N fertilization did not influence concentration of macronutrients and micronutrients in leaves. In turn, P, K and Mg fertilization influenced nutrition of coconut palm. P and K fertilizations, isolated or in combination, increased the production of coconut/plant and FAW/ha. From the 6th year of plant age, 54 kg/ha/year of P2O5 and 96 kg/ha/year of K2O are indicated for the coconut culture in the region of the current study. N fertilization did not influence production parameters and Mg fertilization increased production in the presence of K fertilization.
DOI: 10.6084/m9.figshare.19944843.v1
title: Nutrition and production of coconut palm cultivated with mineral fertilization in the state of Pará

description: Abstract Fertilization greatly affects coconut productivity; nevertheless, information on crop nutrition is relatively scarce for coconut in the state of Pará, Brazil. This study evaluated the effect of fertilization with nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg) on the nutritional status and coconut yield under the edaphoclimatic conditions of the municipality of Moju, Pará State (Brazil). The experiment was conducted for 10 years on a SOCOCO® Farm and used a randomized block design with three replications. Three levels of P, K, and Mg were used in presence and absence of N. Response to fertilization in the treatments was studied in terms of leaf concentration of macronutrients (N, P, K, Ca, Mg and S) and micronutrients (B and Cl). We also assessed the number of coconuts/plant/year, fresh albumen weight (FAW)/coconut and FAW/ha/year. The results were subjected to the analysis of variance (p&lt;0.05) and the means compared by the Tukey test. In general, N fertilization did not influence concentration of macronutrients and micronutrients in leaves. In turn, P, K and Mg fertilization influenced nutrition of coconut palm. P and K fertilizations, isolated or in combination, increased the production of coconut/plant and FAW/ha. From the 6th year of plant age, 54 kg/ha/year of P2O5 and 96 kg/ha/year of K2O are indicated for the coconut culture in the region of the current study. N fertilization did not influence production parameters and Mg fertilization increased production in the presence of K fertilization.
DOI: 10.6084/m9.figshare.19944846.v1
title: Reapplication of bud break promoters in ‘Fuji Suprema’ apple trees

description: Abstract The aim of this work was to verify the effectiveness of the reapplication of bud break producers on flowering, sprouting and production of ‘Fuji Suprema’ apple trees. The experiment was carried out in an experimental orchard located in the municipality of Caçador, SC, during 2016/2017 to 2019/2020 seasons. Treatments were applied at stages B and C, and those with reapplication, from 7 to 14 days after the first application. Phenology, axillary and terminal bud break, frui set, production per plant and average fruit mass were evaluated. Phenology was advanced in relation to control with the application of bud break promoters. However, treatments applied at stage B provided greater advance in relation to applications at stage C. In axillary and terminal bud break, all treatments were superior to control. In some seasons, the sequential application of bud break promoters increased bud sprouting compared to single application treatment. There is no reduction fruit set in treatments with sequential application in relation to single application. In plant production, sequential applications did not differ from single application. The average fruit mass was not altered by the sequential application of bud break promoters.
DOI: 10.6084/m9.figshare.19944846
title: Reapplication of bud break promoters in ‘Fuji Suprema’ apple trees

description: Abstract The aim of this work was to verify the effectiveness of the reapplication of bud break producers on flowering, sprouting and production of ‘Fuji Suprema’ apple trees. The experiment was carried out in an experimental orchard located in the municipality of Caçador, SC, during 2016/2017 to 2019/2020 seasons. Treatments were applied at stages B and C, and those with reapplication, from 7 to 14 days after the first application. Phenology, axillary and terminal bud break, frui set, production per plant and average fruit mass were evaluated. Phenology was advanced in relation to control with the application of bud break promoters. However, treatments applied at stage B provided greater advance in relation to applications at stage C. In axillary and terminal bud break, all treatments were superior to control. In some seasons, the sequential application of bud break promoters increased bud sprouting compared to single application treatment. There is no reduction fruit set in treatments with sequential application in relation to single application. In plant production, sequential applications did not differ from single application. The average fruit mass was not altered by the sequential application of bud break promoters.
DOI: 10.6084/m9.figshare.19944848
title: Olive oil: a review on the identity and quality of olive oils produced in Brazil

description: Abstract The sensory quality of olive oils is influenced by the diversity and concentration of volatile and non-volatile compounds that vary according to cultivar, and edaphic, climatic, and cultivation conditions, which allows for establishing the origin of the product. In addition, since this crop has been recently introduced in Brazil, little is known about the performance of cultivars in this region, where investments in this activity have been made. Thus, relevant aspects about the chemical and sensory quality of olive oils are presented and discussed, as well as how these aspects influence the identity of the product.
DOI: 10.6084/m9.figshare.19944848.v1
title: Olive oil: a review on the identity and quality of olive oils produced in Brazil

description: Abstract The sensory quality of olive oils is influenced by the diversity and concentration of volatile and non-volatile compounds that vary according to cultivar, and edaphic, climatic, and cultivation conditions, which allows for establishing the origin of the product. In addition, since this crop has been recently introduced in Brazil, little is known about the performance of cultivars in this region, where investments in this activity have been made. Thus, relevant aspects about the chemical and sensory quality of olive oils are presented and discussed, as well as how these aspects influence the identity of the product.
DOI: 10.6084/m9.figshare.19944849
title: Alternative budburst inducers for kiwifruit vines grown in an organic system

description: Abstract Lack of budburst inducers is a major problem in organic production of temperate fruits. This study aimed at evaluating the effect of alternative budburst inducers on kiwifruit vines of cultivar Bruno grown in an orchard in Pelotas, Rio Grande do Sul (RS), Brazil. Inducers efficiency was investigated in both 2016-2017 and 2017-2018 seasons. The first season comprised of ten treatments, which used garlic extract at different concentrations, both, associated with and without mineral oil; Welsh onion extract at different concentrations, both associated with and without mineral oil; just mineral oil; and control (no application). In the second season, evaluation was carried out ith treatments that performed well in the first season, garlic extract atdifferent concentrations associated with mineral oil, just mineral oil and control. The followingvariables were evaluated: budburst percentage, phenology (budburst and flowering), fruit set, number of fruit/plant, fruit mass/ plant, estimate production, mean mass, fruit length and diameter. Results showed that 10% garlic extract + 2% mineral oil induced the highest budburst percentages in both seasons; the position of buds on branches influences budburst; apical buds exhibit the highest budburst percentage; 15% garlic extract causes phytotoxicity to buds; and Welsh onion extract is inefficient to induce budburst.
DOI: 10.6084/m9.figshare.19944849.v1
title: Alternative budburst inducers for kiwifruit vines grown in an organic system

description: Abstract Lack of budburst inducers is a major problem in organic production of temperate fruits. This study aimed at evaluating the effect of alternative budburst inducers on kiwifruit vines of cultivar Bruno grown in an orchard in Pelotas, Rio Grande do Sul (RS), Brazil. Inducers efficiency was investigated in both 2016-2017 and 2017-2018 seasons. The first season comprised of ten treatments, which used garlic extract at different concentrations, both, associated with and without mineral oil; Welsh onion extract at different concentrations, both associated with and without mineral oil; just mineral oil; and control (no application). In the second season, evaluation was carried out ith treatments that performed well in the first season, garlic extract atdifferent concentrations associated with mineral oil, just mineral oil and control. The followingvariables were evaluated: budburst percentage, phenology (budburst and flowering), fruit set, number of fruit/plant, fruit mass/ plant, estimate production, mean mass, fruit length and diameter. Results showed that 10% garlic extract + 2% mineral oil induced the highest budburst percentages in both seasons; the position of buds on branches influences budburst; apical buds exhibit the highest budburst percentage; 15% garlic extract causes phytotoxicity to buds; and Welsh onion extract is inefficient to induce budburst.
DOI: 10.6084/m9.figshare.19944851
title: Identification of sources of resistance of Passiflora rootstocks to fusariosis in areas with disease outbreaks in Mato Grosso state, Brazil

description: Abstract The aim of the study was to identify sources of resistance of Passiflora rootstocks to Fusarium sp. in two experimental areas with histories of disease foci in Mato Grosso state, Brazil. The experiment was carried out from June 2012 to December 2015 and was of randomized block design with eight treatments in which susceptible cultivar P. edulis was grafted onto hybrids CPAC MJ-H-87, CPAC MJ-H-76, CPAC MJ-H-86 and CPAC MJ-H-88, the commercial cultivar and native P. edulis, P. nitida and P. alata. Mortality rates of grafted plants were evaluated up to 640 days after transplantation. All Fusarium sp. isolates were identified as F. oxysporum f. sp. passiflorae. Plant mortality occurred earlier in the clay area than in the area with sandy clay loam. Grafted plants involving P. edulis as rootstocks were highly susceptible to Fusarium sp. with overall mortality rates above 56.25% considering both soil types, while plants with CPAC MJ-H-76 or native P. nitida rootstocks were more resistant with mortality rates below 12.5%. Grafted plants with CPAC MJ-H-86 as rootstock were highly resistant in clay soil but highly susceptible in soil with high proportion of sand. Only grafted plants involving CPAC MJ-H-76 as rootstock showed moderate resistance.
DOI: 10.6084/m9.figshare.19944851.v1
title: Identification of sources of resistance of Passiflora rootstocks to fusariosis in areas with disease outbreaks in Mato Grosso state, Brazil

description: Abstract The aim of the study was to identify sources of resistance of Passiflora rootstocks to Fusarium sp. in two experimental areas with histories of disease foci in Mato Grosso state, Brazil. The experiment was carried out from June 2012 to December 2015 and was of randomized block design with eight treatments in which susceptible cultivar P. edulis was grafted onto hybrids CPAC MJ-H-87, CPAC MJ-H-76, CPAC MJ-H-86 and CPAC MJ-H-88, the commercial cultivar and native P. edulis, P. nitida and P. alata. Mortality rates of grafted plants were evaluated up to 640 days after transplantation. All Fusarium sp. isolates were identified as F. oxysporum f. sp. passiflorae. Plant mortality occurred earlier in the clay area than in the area with sandy clay loam. Grafted plants involving P. edulis as rootstocks were highly susceptible to Fusarium sp. with overall mortality rates above 56.25% considering both soil types, while plants with CPAC MJ-H-76 or native P. nitida rootstocks were more resistant with mortality rates below 12.5%. Grafted plants with CPAC MJ-H-86 as rootstock were highly resistant in clay soil but highly susceptible in soil with high proportion of sand. Only grafted plants involving CPAC MJ-H-76 as rootstock showed moderate resistance.
DOI: 10.6084/m9.figshare.19944852
title: Participatory survey of citrus in the “Recôncavo Baiano region” with emphasis on the threat of huanglongbing

description: Abstract Huanglongbing (HLB) is one of the most devastating diseases for citrus sector. In Brazil, the state of Bahia is free of the disease, however it is on constant alert to prevent its introduction. One of the main areas of citrus exploitation in the state is located in the Recôncavo Baiano’s identity territory and is characterized by family-based production. This study aimed to perform a participative phytosanitary diagnosis with citrus growers from the “Recôncavo Baiano” region, recording their perception regarding the HLB and its vector, Diaphorina citri. The diagnosis, which featured 109 interviews, was carried out in five prominent cities in citrus production (Cruz das Almas, Governador Mangabeira, Muritiba, Santo Antônio de Jesus and São Felipe). The results showed that 70% of citrus growers never heard of the disease. It also indicated that only 6% of farmers have technical assistance. Even with the tradition of citrus farmers, the use of technologies is still limited. The presented results constitute an important tool for phytosanitary defense, as it provides strategic information that enable the planning of indispensable actions for preventing HLB entry in this territory, and also to minimize its negative impacts, contributing with the maintenance of the citrus production chain.
DOI: 10.6084/m9.figshare.19944852.v1
title: Participatory survey of citrus in the “Recôncavo Baiano region” with emphasis on the threat of huanglongbing

description: Abstract Huanglongbing (HLB) is one of the most devastating diseases for citrus sector. In Brazil, the state of Bahia is free of the disease, however it is on constant alert to prevent its introduction. One of the main areas of citrus exploitation in the state is located in the Recôncavo Baiano’s identity territory and is characterized by family-based production. This study aimed to perform a participative phytosanitary diagnosis with citrus growers from the “Recôncavo Baiano” region, recording their perception regarding the HLB and its vector, Diaphorina citri. The diagnosis, which featured 109 interviews, was carried out in five prominent cities in citrus production (Cruz das Almas, Governador Mangabeira, Muritiba, Santo Antônio de Jesus and São Felipe). The results showed that 70% of citrus growers never heard of the disease. It also indicated that only 6% of farmers have technical assistance. Even with the tradition of citrus farmers, the use of technologies is still limited. The presented results constitute an important tool for phytosanitary defense, as it provides strategic information that enable the planning of indispensable actions for preventing HLB entry in this territory, and also to minimize its negative impacts, contributing with the maintenance of the citrus production chain.
DOI: 10.6084/m9.figshare.19944854
title: How to drive phloem gene expression? A case study with preferentially expressed citrus gene promoters

description: Abstract New approaches for developing disease-resistant genetically modified organisms have included specific targets for gene expression to enhance the chances for pathogen control. Gene expression driven by phloem-derived Citrus sinensis gene promoters could be evaluated and compared with the expression induced by a strong constitutive promoter in the same tissue, leading to the production of transgenic sweet oranges potentially more resistant to diseases caused by phloem-limited bacteria. ‘Carrizo’ citrange [ (Poncirus trifoliataL.) Raf. x Citrus sinensis (L.) Osbeck] was transformed, via Agrobacterium tumefaciens, with the binary vector pCAMBIA2301 bearing the uidA gene (ß-glucuronidase) driven by the CaMV35S constitutive promoter (CaMV35S::uidA) or by the CsPP2.B1 (CsPP2.B1::uidA) or by the CsVTE2 (CsVTE2::uidA) citrus promoters. In vitro regenerated shoots were grafted onto ‘Rangpur’ lime (C. limonia Osbeck). The genetic transformation was confirmed by Southern blot analyses. uidA gene expression was evaluated by RT-qPCR, and gene histolocalization controlled by these three promoters was accessed by X-GLUC treated stem sections. uidA gene expression exhibited by tissue-specific promoters was overall lower than from the constitutive promoter CaMV35; however, constructs driven by tissue-specific promoters may lead to expression in restricted tissues. CsPP2.B1 and CsVTE2 promoters can be considered adequate for the utilization in gene constructs aiming disease resistance.
DOI: 10.6084/m9.figshare.19944854.v1
title: How to drive phloem gene expression? A case study with preferentially expressed citrus gene promoters

description: Abstract New approaches for developing disease-resistant genetically modified organisms have included specific targets for gene expression to enhance the chances for pathogen control. Gene expression driven by phloem-derived Citrus sinensis gene promoters could be evaluated and compared with the expression induced by a strong constitutive promoter in the same tissue, leading to the production of transgenic sweet oranges potentially more resistant to diseases caused by phloem-limited bacteria. ‘Carrizo’ citrange [ (Poncirus trifoliataL.) Raf. x Citrus sinensis (L.) Osbeck] was transformed, via Agrobacterium tumefaciens, with the binary vector pCAMBIA2301 bearing the uidA gene (ß-glucuronidase) driven by the CaMV35S constitutive promoter (CaMV35S::uidA) or by the CsPP2.B1 (CsPP2.B1::uidA) or by the CsVTE2 (CsVTE2::uidA) citrus promoters. In vitro regenerated shoots were grafted onto ‘Rangpur’ lime (C. limonia Osbeck). The genetic transformation was confirmed by Southern blot analyses. uidA gene expression was evaluated by RT-qPCR, and gene histolocalization controlled by these three promoters was accessed by X-GLUC treated stem sections. uidA gene expression exhibited by tissue-specific promoters was overall lower than from the constitutive promoter CaMV35; however, constructs driven by tissue-specific promoters may lead to expression in restricted tissues. CsPP2.B1 and CsVTE2 promoters can be considered adequate for the utilization in gene constructs aiming disease resistance.
DOI: 10.6084/m9.figshare.19944855.v1
title: Sucrose concentration and blueberry plant density in temporary immersion systems (TIS)

description: Abstract The aim was to determine the ideal concentration of sucrose along with the number of plants per container in the face of micropropagation of blueberry under TIS. In the experiment conducted with sucrose concentration (0, 10, 20, e 30 g L-1), we utilized a WPM medium, taking into account 30 explants per container. For the experiment dealing with blueberry plant density, the same medium with 20 g L-1 of sucrose in conjunction with 30, 40, 50 and 60 explants per container was used. After 90 days from the installation of the trial, the following response variables were assessed herein: total length of the plant, number of shoots, length of the largest shoot, number of hyperhydric shoots, length of hyperhydric shoots, and number of healthy leaves. Under a sucrose concentration corresponding to 20 g L-1 the best possible results were obtained. Survival rates of 22 and 80% under the influence of both 10 and 20 g L-1 treatments were reported, pointing out that plants exposed to 20 g L-1 treatment were more amenable to acclimatization. Thus, for the micropropagation of blueberry under TIS the use of 20 g L-1 sucrose and 60 plants/container comes to being highly recommended to increase yield.
DOI: 10.6084/m9.figshare.19944855
title: Sucrose concentration and blueberry plant density in temporary immersion systems (TIS)

description: Abstract The aim was to determine the ideal concentration of sucrose along with the number of plants per container in the face of micropropagation of blueberry under TIS. In the experiment conducted with sucrose concentration (0, 10, 20, e 30 g L-1), we utilized a WPM medium, taking into account 30 explants per container. For the experiment dealing with blueberry plant density, the same medium with 20 g L-1 of sucrose in conjunction with 30, 40, 50 and 60 explants per container was used. After 90 days from the installation of the trial, the following response variables were assessed herein: total length of the plant, number of shoots, length of the largest shoot, number of hyperhydric shoots, length of hyperhydric shoots, and number of healthy leaves. Under a sucrose concentration corresponding to 20 g L-1 the best possible results were obtained. Survival rates of 22 and 80% under the influence of both 10 and 20 g L-1 treatments were reported, pointing out that plants exposed to 20 g L-1 treatment were more amenable to acclimatization. Thus, for the micropropagation of blueberry under TIS the use of 20 g L-1 sucrose and 60 plants/container comes to being highly recommended to increase yield.