Chilli cultivation becomes uneconomical in rainfed or summer
due to leaf curl disease which causes yield reduction of up to 50%. Being a
viral disease controlling is difficult and hence development of a resistant
variety is essential and understanding disease inheritance is needed.
Generation mean analysis for leaf curl virus resistance and yield was
investigated in two interspecific crosses of chilli namely ‘Mavellikara Local’
x ‘Jwalasakhi’ and ‘Nenmara Local’ x ‘Vellayani Athulya’. The additive (d)
component was significant for all the traits studied in both crosses. But
wherever dominance gene effects were significant, the dominance (h) values were
higher than the additive (d) values. The dominance (h) and dominance x
dominance (l) effects were in the same direction, suggesting that
complementary-type epistasis occurred in most cases. The dominance x dominance
(l) interaction was more predominant than the other two effects. The presence
of significant levels of all types of gene actions like additive, dominance and
epistasis for most of the important traits especially yield and virus
resistance has indicated that a method designed to utilize all of them such as
recurrent selection, multiple crosses or diallel selective mating system has to
be adopted in the breeding programme.
Author(s)details:-
K. Anandhi
Department of Pulses, Tamil Nadu Agricultural University, Coimbatore, Tamil
Nadu, India.
Abdul Khader K. M.
Department of Plant Breeding and Genetics, College of Agriculture,
Vellayani, Trivandrum, Kerala Agricultural University, India.
Please See the book
here :-https://doi.org/10.9734/bpi/racas/v9/7132B
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