Comparative agroclimatic indices of desi and kabuli chickpea genotypes under irrigated and rainfed conditions
DOI:
https://doi.org/10.59797/jfl.v33i2.607Keywords:
Chickpea, Heat units, Path coefficient analysis, Phenophases, Rainfed cropsAbstract
The present study was conducted in relation to agroclimatic indices i.e. accumulated growing degree days (AGDD), accumulated photothermal units (APTU) and accumulated heliothermal units (AHTU) on eight desi and four kabuli chickpea genotypes under irrigated and rainfed conditions at transitional phenophases of flower initiation, pod initiation and at maturity. Significant differences in AGDD, APTU and AHTU at different phenophases were recorded but no significant difference was observed amongst desi and kabuli genotypes. Genotypes pooled higher photothermal units under irrigated conditions; however, earliness in flowering reduced the accumulation window of heat units under rainfed conditions. Desi genotype PBG 7 and kabuli genotype IPCK-2009-165 recorded high HUE (heat use efficiency) values and displayed low dip (6.90 and 0.54 % respectively) in yield. Agroclimatic indices i.e. AGDD, APTU and AHTU in kabuli and desi genotypes significantly pooled to final high yields (P=0.78, P=0.82 and P=0.77 respectively) under irrigated conditions at maturity.
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