Vol. 12, Issue 5 (2023)

Author(s):
Lalit Kumar, Naresh, OP Bishnoi, Krishan Kumar, Mehak Nagora, Narender Pal and Rohit

Abstract:
Forty advance lines were used in the present study to identify the terminal heat-tolerant lines. The experiments were conducted in Rabi 2019-20 using a Randomized Block Design with three replications and two sowing dates (20th November and 20th December, 2019) at the Research Area of Wheat and Barley Section, Department of Genetics & Plant Breeding, CCS-Haryana Agricultural University in Hisar. Various morpho-physiological characteristics were observed and noted. The ANOVA revealed that variance due to genotypes were highly significant for all the traits, under both the conditions. GCV and PCV estimates for grain yield per plant, harvest index, biological yield per plant and CTD were moderate. Moderate to high estimates of heritability were also associated with moderate to high estimates of genetic advance as a percentage of the mean for plant height, spike length, peduncle length, number of spikelets per spike, number of grains per spike, 1000 grain weight, biological yield per plant, harvest index, grain yield per plant, CTD-1, CTD-2, SPAD-1 and SPAD-2 under both the environmental conditions, indicating the existence of additive gene effects and suggesting the effectiveness of the selective breeding approach for improving these traits in wheat.