4 (1) 2020, JANUARY, 2020
Pages: 2-8
Heterosis studies in durum wheat (Triticum durum L.)
Author: Aliyu Usman Ibrahim, B. Yadav, Anusha Raj, Auwal Ibrahim Magashi
Category: Plant breeding
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Abstract:
The present investigation was undertaken at the Department of Genetics and Plant Breeding, Sam Higginbottom university of Agriculture, Technology and Sciences SHUATS, Allahabad during Rabi 2015-2016 in RBD with three replications. Mean performance for grain yield and its components depicted that F1 (HI-8653 x AKDW-2997) was found superior. Higher phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were observed for character effective tillers per plant. A close perusal of heritability depicted that high heritability (>60%) was observed for plant height, days to maturity, effective tillers per plant, test weight, days to heading, days to 50% flowering, flag leaf length, grain yield per plant and grain filling period. The highest estimates of genetic gain were exhibited by effective tillers per plant. Estimates of heterosis (Ha) showed that the highest average heterosis for seed yield per plant was observed for F1 (HI-8653 x AKDW-2997). The highest heterobeltiosis (Hb) value for seed yield per plant was depicted for F1 (HI-8653 x AKDW-2997). A perusal of estimates of economic (Hc) heterosis revealed that the highest economic heterosis value for seed yield was observed for F1 (HI-8653 x AKDW-2997). Estimate of heterosis (Ha) showed that the lowest average heterosis for days to maturity was observed for F1 (RAJ-6560 x PDW-300). The lowest heterobeltiosis (Hb) value for days to maturity was depicted for F1 (RAJ-6560 x PDW-300). A perusal of estimates of economic (Hc) heterosis revealed that the highest economic heterosis value for days to maturity was observed for F1 (NIDW-295 x PDW-300). These crosses can be advanced to obtain desirable transgressive segregants in durum wheat.
Keywords: Durum wheat, GCV, PCV, heritability, genetic gain, heterosis
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