DOI: 10.5061/dryad.2fqz61316
title: Genetic diversity among black cumin (<em>Nigella sativa</em> L.) accessions based on quantitative and qualitative traits

description: To investigate the genetic diversity in black cumin (Nigella sativa L.) a
 total of 64 genotypes were tested in an 8x8 simple lattice design at
 Sirinka for two consecutive years during 2022/23 and 2023/2024. ANOVA
 revealed the prevalence of significant difference among the genotypes for
 all quantitative traits except capsule length and diameter. The variation
 of the genotypes for seed yield was between 0.66 and 1.69 t ha-1 with mean
 value of 1.02 t ha-1. The genotypic and phenotypic coefficient of
 variation /GCV and PCV/ for 16 traits estimated in the range between 3.81
 and 49.84 and 6.50 and 50.90%, respectively. Heritability/H2/ and genetic
 advance as percentage of mean/GAM/ ranged from 19.18 to 98.25 and 4.67 and
 100%, respectively. High to moderate estimates of GCV, PCV, H2, and GAM
 observed for all parameters except day to bud formation, days to maturity,
 capsule length, and capsule diameter. Seed yield showed positive and
 significant correlation with almost all parameters. The first five
 principal component axes/PCAs/accounted 72% of the total variability, in
 which PCA1 contributed 32%, and PCA2, PCA3, PCA4, and PCA5 exhibited 13,
 12, 8, and 7% to the total variability, respectively. The qualitative data
 showed higj variability except flower color, plant growth type, and stem
 hairiness. The cluster analysis for qualitative traits classified into
 five groups. The research results clearly showed that there was sufficient
 diversity among the genotypes which can be exploited for the future black
 cumin improvement programme.
description: # Genetic diversity among black cumin (*Nigella sativa* L.) accessions
 based on quantitative and qualitative traits Dataset DOI:
 [10.5061/dryad.2fqz61316](10.5061/dryad.2fqz61316) ## Description of the
 data and file structure File:
 Supplementary_Data_For_Black_Cumin_Diversity_Trial.xlsx Table: Table S1.
 List of the black cumin (*Nigella* *sativa*) accessions with their
 collection site. Variables: Accessions, Region, Zone, Latitude, Longitude,
 and Altitude. Table: Table S2. General crop descriptors bioversity
 international (2007) Variables: Serial number (SN), Qualitative character,
 Variants, and Scoring. Table: Table S3. Mean performance of phenological
 traits in 64 black cumin genotypes of Ethiopia tested at Sirinka.
 Variables: Accessions, Days to bud formation, Days to capsule formation,
 Days to 50% flowering, Days to maturity, Plant height (cm), Primary
 branches per plant, Secondary branches per plant, and 1000 seed weight
 (g). Table: Table S4. Mean performance of growth, yield, and yield-related
 traits in 64 black cumin genotypes of Ethiopia tested at Sirinka.        
                         Variables: Accessions, Capsules per plant, Length
 of capsules (cm), Diameter of capsules (cm), Seeds per capsule, Seed yield
 per plant (g), Seed yield per hectare (t ha-¹), Biomass yield per hectare
 (t ha-¹), and Harvest index (%). Table: Table S5. Frequency distribution
 of 20 qualitative characters and Shannon-Weaver diversity index (H’) on 64
 black cumin accessions. Variables: Serial number (SN), Qualitative
 character, Variants, Scoring, number of phenotypic classes in the trait
 (n), Frequency (%), and diversity index (H').