PJB-2024-594
INTERACTION EFFECT OF SOWING DATES AND GENOTYPES ON YIELD RELATED TRAITS OF CHICKPEA
Rooh Ullah
Abstract
In this field experiment, 23 chickpea genotypes were examined under three different planting dates for yield components of at the University of Agriculture Peshawar, during 2020-21. Simple RCBD with three replicates was used to examine genotype-by-planting date (G×P) interactions across three planting times: early (October 3), normal (October 22), and late (December 5). Statistically pooled ANOVA revealed significant (P < 0.05) effects of main factors and genotype-by-planting date (G×P) for majority the traits except secondary branches plant-1, seeds pod-1 and 100-grain weight which were non-significantly influenced by G×P interactions. On the average across the three environments, there exist high estimates of the maximum primary branches for genotype NDC-122, pod plant-1 and seed pod-1 for NDC-15-4, while seed yield for NDC-15-4. The G×P interaction means revealed maximum primary branches plant-1 for genotype NDC-122, pods plant-1 for NDC-15-4, seeds pod-1 for NDC-15-4 and seed yield for NDC-15-4. High heritability of 0. 94 was estimated under both early and normal planting, while 0.91 under late planting for seed yield. Also high heritability of 0.80, 0.97 and 0.69 was recorded under early, normal and late planting, respectively. Strong positive association of seed yield was noticed with plant height, secondary branches, pods plant-1, seeds pod-1 and biological yield both at genotypic and phenotypic level under all planting dates. Due to independent environment, maximum seed yield was recorded under early sowing for NIFA-2005, under normal sowing for NDC-15-4 and under late sowing for EG1. Consistently across environments, genotypes NDC-15-4, IG3 and MG5 demonstrated superior yield performance and potential incorporation into future breeding programs as elite genetic materials.
Key words: Genetic Variability, Genotype × Planting interaction, Genotypic and phenotypic correlation, Heritability
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