Evaluation of Genetic Divergence for Grain Yield and Its Contributing Traits in Field pea (Pisum sativum L. var. arvense) (original) (raw)
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Genetic divergence in pea (Pisum sativum L.)
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Genetic Divergence (D 2) was studied in 26 genotypes of pea to quantify the nature and extent of diversity and to identify the most desirable genotypes by the Mahalonobis D 2 technique. Analysis of variance revealed significant difference among the genotypes for all the 23 characters investigated. Twenty six genotypes were grouped into eight clusters. Among the eight clusters, it was observed that cluster I had the maximum of 10 genotypes followed by cluster VIII which had 4 genotypes. The maximum mean values for the twenty three characters were observed in cluster VII followed by cluster VIII and II. Genotypes Azad P-3, Arka Sampoorna, PSM-4, and Arka Karthik were found to be superior varieties for yield contributing traits.
Genetic Divergence Analysis for Yield and Quality Traits in Garden Pea (Pisum sativum L.)
International Journal of Bio-resource and Stress Management, 2018
Genetic diversity among twenty-three pea genotypes was worked out using Mahalanobis D 2 statistic. On the basis of genetic distance, these genotypes were grouped into 5 clusters. Cluster IV was largest, consisting of eight genotypes followed by cluster I with seven genotypes, cluster III with four genotypes, cluster II with three genotypes while cluster V contained single genotype. There was no parallelism between genetic diversity and geographical distribution. Cluster IV
Plant Archives, 2022
The present study was conducted to study genetic variability and association among agronomic characters of pea (Pisum sativum L.) genotypes. The field experiment was conducted using ten genotypes at College of Agricultural Sciences (CAS) of International University of Business Agriculture and Technology (IUBAT), Dhaka, Bangladesh during the Rabi season (November 2020 to March 2021). Treatments were using the randomized complete block design (RCBD) with three replications. Highly significant (p ≤ 0.01) differences among the tested genotypes were observed. The results obtained revealed that the mean squares of the genotypes (G6) were best for 50% flowering (50.38), days to maturity (122.08) and fresh pod shelling percentage (65.29%). Genotype (G2) had highest plant height (142.08 cm), pods plant-1(39.96) and seed yield plant-1 (52.04 gm). G9 had maximum 100-seed fresh (43.90 gm) and dry (21.29 gm) weight. Genotype (G5) had best primary branches plant-1 whereas G8 had maximum pod length (8.86 cm) and seeds pod-1 (6.26). The estimates of heritability and genetic advance were high for days to 50% flowering (0.99, 35.38%), plant height (0.95, 46.88%) and seed yield plant-1 (0.97, 62.47%). High heritability with moderate genetic advance were observed for days to maturity (0.97, 20.20%), pod length (0.95, 15.37%) fresh pod shelling percentage (0.82, 21.58%), 100-seed fresh (0.90, 29.52%) and dry weight (0.93, 22.68%). Significant and positive phenotypic coefficient of correlation was exhibited by seed yield plant-1 with plant height (rp = 0.64), days to 50% flowering (rp= 0.63), days to maturity (rp = 0.78), pods plant-1 (rp = 0.72), pod length (rp = 0.66), fresh pod shelling percentage (rp = 0.64), 100-seed fresh weight (rp = 0.65) and 100-seed dry weight (rp = 0.62). Significant and positive genotypic coefficient of correlation was exhibited by seed yield plant-1 with plant height (rg= 0.81), days to maturity (rg= 0.70) and pods plant-1 (rg= 0.84). Among tested genotypes G6, G2, G9 and G5 performed better, therefore could be used in future breeding programs. These traits best contributing to yield variation that emphasis by breeders for future yield improvement of the crop. It can be conclude that pea yield can be successfully improved by studying genetic variability and its agronomic characters.
Assessment of Genetic Divergence in Pea (Pisum sativum L.) Genotypes in Western U.P
International Journal of Environment and Climate Change
The present investigation was carried out with 20 genotypes of pea (Pisum sativum L.) at Horticulture Research Centre (HRC) of SVPUAT, Meerut, U.P, during 2021-22 to identify the nature and magnitude of genetic divergence among genotypes based on phenotypical traits using the multivariate analysis. The experiment was laid down in randomized block design (RBD) with three replications. The experiment has ten observations based on five randomly selected plants from each replication. D2 analysis grouped all 20 varieties into five clusters revealing the presence of considerable amount of variation among genotypes. Cluster pattern revealed that, clusters I and II had the highest number of 5 genotypes succeeded by cluster III with 4 genotypes, cluster IV and cluster V containing three genotypes each. Maximum intra cluster distances were recorded in cluster I (D2 =2.264) indicating maximum difference among the genotypes within the cluster and minimum intra cluster distance was recorded in c...