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Updated: 23-06-15 | ||||
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HERITABILITY AND GENETIC ADVANCE STUDIES FOR BIOCHEMICAL TRAITS IN F2-3 INTROGRESSED FAMILIES OF BRASSICA
NADIA KHAN, FARHATULLAH, IFTIKHAR HUSSAIN KHALIL, HAFSA NAHEED AND SANA ABID*
Abstract: Higher heritability estimates along with high genetic advance values are effective in envisaging gain under selection in developing genotypes. The objective of the present study was to evaluate variability, heritability and genetic advance in 10 interspecific F2-3 families of Brassica species (B. napus × B. juncea, B. napus × B. rapa). These families were studied for heterospecific introgression of biochemical traits. Low to high heritability estimates were recorded for seed quality traits. Considerable variations within F2-3 families were observed for biochemical traits. Most of the F2-3 families for oil content and erucic showed moderate to high heritability indicating the slightest influence of environment thus modification of trait by selection would be more effective. Among F2-3 introgressed families Bn-510 x Bj-109 produced high oil i.e., 49.5% while Bn-532 x Br-118 (24.4%), Bn-533 x Bj-109 (24.1%) and high protein percentage in terms of mean performance. In the present research, individual segregating progenies of interspecific cross populations i.e., which possessed combination of desirable traits, were identified which could be incorporated in the future Breeding programs and it may facilitate varietal development.
Key words: Heterospecific introgression, Biochemical traits, Inter-specific hybridization, Brassica.
Department of Plant Breeding and Genetics, The University of Agriculture Peshawar, Pakistan *Corresponding author’s e-mail: drfarhat@aup.edu.pk |
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