Heterosis and combining ability for yield and its contributing traits in linseed (Linum usitatissimum L.)
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Date
2022-08-10
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BANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY, BANDA, UTTAR PRADESH, INDIA
Abstract
A half diallel experiment involving six parents was carried out in randomized block
design with three replications at PG research Farm, Banda University of Agriculture and
Technology, Banda, Uttar Pradesh, India to assess the gene action, combining ability
(GCA and SCA) and heterosis for seed yield and its eight contributing characters in linseed
under agro climatic condition of Bundelkhand region. The genetic analysis was done
following Griffing’s Method II with Model I (1956). The study revealed the importance of
both additive and non-additive gene effects for all the traits with preponderance of nonadditive gene effects for seed yield per plant, Days to 50% flowering, Days to maturity,
Plant height, Number of branches per plant, Number of capsules per plant, Number of
seeds per capsule and Biological yield per plant whereas 1000-seed weigh showed
predominance of additive gene effect.
On the basis of general combining ability (GCA), the parents, LMS 2015-27 and
Shekhar could be exploited for developing prolific pure lines varieties in linseed. The
parallelism between heterosis and SCA effects indicated that heterotic response alone may
be good indicator for selection of superior cross combinations, On the basis of comparison
of per se performance, SCA effects and heterotic response for seed yield and its number of
important attributing traits, the crosses, Shekhar × GP-1050, LMS 2015-27 × GP-1028,
Shekhar × GP-820, LMS 2015-27 × GP-820 and LMS 2015-27 × GP-1050 may be
included in recombination breeding for developing high yielding genetic stock/varieties in
linseed.
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Citation
Pawan Kumar Prajapati. 2022. Heterosis and combining ability for yield and its contributing traits in linseed (Linum usitatissimum L.). Thesis, M.Sc.