PJB-2007-170
GENETIC HERITABILITY FOR GRAIN YIELD AND ITS RELATED CHARACTERS IN SPRING WHEAT (TRITICUM AESTIVUM L.)
SHABANA MEMON, MUEEN-U-DIN QURESHI, BASHIR AHMED ANSARI AND MAHBOOB ALI SIAL1
Abstract
Seven F3 progenies and their 8 parental lines of spring wheat were evaluated for some genetic parameters viz., coefficient of variability (Cv), genetic variance (Vg), heritability percentage (h2 %) and genetic advance (GA) in 7 quantitative characters (grain yield and its associated traits). Highly significant (p£0.01) differences were observed for all the characters viz. plant height, number of grains per spike, seed index and grain yield per plant among all the genotypes; indicating more variability. Differential responses for different characteristics were observed among the entire cross combinations. The highest heritability with more genetic advance for plant height, number of spikelets per spike and number of grains per spike were observed in progeny Khirman x RWM-9313. Two progenies Soghat-90 x Sarsabz and Marvi-2000 x Soghat-90 showed more number of tillers per plant, spike length and grains per spike with more heritability and genetic gain. The parental line Khirman (a drought-tolerant variety) showed outstanding performance with respect to more number of tillers per plant (12.6) and grain yield per plant (25.6) also combining acceptable genetic parameters.
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