PJB-2022-111
STABILITY ANALYSIS OF CHICKPEA GENOTYPES FOR YIELD AND POD BORER (Helicoverpa armigera) RESISTANCE
ADNAN AHMAD
Abstract
Crop breeders evaluate advanced lines across different agro-ecologies to assess their genetic potential against biotic factors and response to diverse environments for credible selection process. Among biotic factors, severe pod borer damage is one of the major yield limiting factors in chickpea around the world. In the present study, 45 chickpea genotypes including four check cultivars were evaluated for yield stability and pod borer resistance during crop season 2018-19. Experimental material was grown at four locations (environments) of Pakistan i.e. Peshawar, Swabi, Karak and Faisalabad, using randomized complete block design with three replications. Pooled analysis of variance revealed significant (P<0.01) differences among genotypes, environments and their interaction for yield and yield related traits. It was deduced from significant interaction results that performance of chickpea genotypes for various traits varied across environments. Based on mean data over environments, genotype D-09027 produced the highest seed yield of 1300 kg ha-1, followed by genotypes D-15036, D-08025 and D-13031, which produced 1249, 1238 and 1235 kg ha-1 seed yield, respectively. Compared to other two locations, Karak and Faisalabad were the most productive environments for seed yield. Among 45 genotypes, lowest number of larvae per plant (2) was observed on genotypes D-08025, D-14005, D-10008 and Karak-1. Also, less pod damaged percentage (9.0%) was observed for Karak-1 followed by genotypes D-14005 and D-15036 (11.2%). Based on Eberhart and Russel stability model, K-01153, D-08025 and D15020 were identified as relatively stable genotypes for seed yield. Therefore, these genotypes could be considered as important source for breeders while breeding for yield stability and pod borer resistance in chickpea.
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