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A.K. Singh A. K. Mall P. K. Singh

Abstract

Forty-four yellow sarson hybrids developed by line x testers mating design (3 pistillate lines x 9 male parents) were studied along with parents and a standard check for heterosis of yield determinant characters in two environments [Genetics and Plant Breeding Farm (E1), Kumarganj and CRS, Masodha (E2)]. Significant desired heterobeltiosis ranged from 4.52 to 44.86 per cent in E1 and 13.42 to 62.07 per cent in E2 while, standard heterosis ranged from -6.64 to 23.01 per cent in E1 and -6.30 to 21.85 per cent for seed yield plant-1 . Other characters also showed considerable heterosis over better parent and standard check. The crosses L2 x T1 and L3 x T1 were identified as potential for commercial exploitation of heterosis both for seed yield plant-1 and oil content. High heterotic hybrids in both the environments viz., L8 x T1 and L9 x T1 showed stability in performance for nine characters including seed yield plant-1 where as among parent NDYS-141 showed near unity ratio of stability factor for five characters. L9 x T1 followed by L8 x T1 could be identified as most promising crosses on the basis of stability, per se performance, standard heterosis, high GCA and significant SCA effects.

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Keywords

Brassica rapa, GCA, Heterosis, Line x Tester design, SCA, Stability factor

References
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Singh, A., Mall, A. K., & Singh, P. K. (2018). Stability factor and heterosis for yield and yield determinants over environments in Indian rapeseed, Brassica rapa var. yellow sarson. Journal of Applied and Natural Science, 10(1), 70-76. https://doi.org/10.31018/jans.v10i1.1581
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