Authors : Shweta D. Deokar, V.S. Girase and C. V. Pujari
Page Nos : 45-52
Description :
Chickpea is the second most important pulse crop in the world after dry bean. This crop has high productivity and holds prominent position in the international food grain trade. The aim of this study was to identify transgressive segregants and to estimate the correlation coefficients for yield and yield components under the climate change in F2 population of cross PG-13107 x BDNG-797 in chickpea. Three generations of chickpea of the cross PG-13107 x BDNG-797 were evaluated at Botany Section Farm, College of Agiculture, Dhule (Maharashtra) during Rabi, 2017. The field experiment was arranged in a randomized block design (RBD) with three replications. In most of the transgressive segregants, better parent yield was transgressed with transgression of one or several other characters. In general, highest proportion of transgressive segregants were recorded for grain yield per plant (20) followed by plant height (19), number of pods per plant (16), plant spread (15), number of seeds per pod (14), number of primary branches per plant (13), 100-seed weight (11), and number of secondary branches per plant (10). In most of the transgressive segregants, better parent yield was transgressed simultaneously with transgression of one or several other characters. Simultaneous transgression of grain yield per plant in association with plant height, number of primary branches per plant, number of secondary branches per plant, plant spread, number of pods per plant and 100-seed weight was observed more frequently. It was concluded that either grain yield per plant is dependent on this character or there may be linkage drag, so that genes responsible for these characters move together. The most promising transgressive segregants observed in F2 generation of cross PG-13107 x BDNG-797 were plant no. 30. Phenotypic correlation of grain yield per plant with nine other characters studied in F2 generation of the cross indicated, significant and positive correlations with number of primary and secondary branches per plant, plant spread, number of pods per plant, number of seeds per pod and 100-seed weight. These characters also showed significant and positive correlation among themselves uniformly. From the above observations the improvement in grain yield of chickpea appears to be possible by selection through aforesaid characters.
