Author(s):

Ram Avtar and Mohinder Singh

Abstract: The present study was undertaken to assess the differential response of 48 diverse genotypes of peas (<em>Pisum sativum </em>L.) over different environments and to estimate the genetic variability. In the present study the linear portion of genotype x environment interaction was significant for the characters days to plant height, number of pods per plant, seeds per pod, 100 seed weight and yield per hectare. Based on the environment index, environment E1 was observed to be the most favorable environment for yield and most of its contributing traits. The genotypes included in the present study did not exhibit uniform stability and responsiveness pattern of different traits. None of the genotypes was found suitable with respect to all the traits. Considering the seed yield and its contributing trait; HFP-9907B was observed to be promising stable for six traits and DMR51 was observed to be promising stable for five traits. The other promising genotypes namely Jayanti, IFPD-3-6, HFP-9907A, HFP-2008, and KMPR 706 were observed to be stable and average responsive for four traits, as indicated by their high mean performance, average to above average response and non significant values. Characters like length of pod, had relatively low genetic variability as well as genetic advance. Length of pod, yield per plant and yield per hectare showed low to medium heritability. The important attributing characters for yield such as days to 50% flowering, days to maturity, pods per plant and primary branches per plant had high heritability. Breeding through selection for these traits for improving seed yield may prove fruitful. Implications of these results have been discussed in the present study.

Pages: 928-932  |  1374 Views  238 Downloads

Download (568KB)