Genetic analysis of agronomic characters in chickpea uri icon

abstract

  • Twenty-eight diallel trials over 8 years and twolocations were analysed to estimate genetic variances foragronomic characters of chickpea (Cicer arietinum L.).The data were analysed according to Method 4 andModel I of Griffing (1956). Days to flowering, plantheight, and seed size were found to be predominantlyunder additive inheritance and were highly predictable.Both additive and non-additive genetic components wereimportant for seed yield, number of branches, pods perplant, and seeds per pod. Although both generalcombining ability (gca) and specific combining ability(sca) varied significantly with generation, components ofgca mean squares were invariably much larger thangca x generation interaction components, indicating thateither the F lor the F2 generation can be used to estimatethe gca components effectively. Combined diallel analysisof F 2S over locations revealed the importance ofcombining ability x location . interactions and emphasizedthe need for testing over more than one location forthe precise estimation of combining ability. The implicationsof these fmdings and those reported earlier in theliterature on the breeding strategies/methods for the geneticimprovement of agronomic characters in cbjckpeaare discussed

publication date

  • 1992
  • 1992