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A study of interaction of additive, dominance and epistatic gene effects with micro- and macro-environments in two tomato triple test crosses

Published online by Cambridge University Press:  27 March 2009

R. P. Singh
Affiliation:
Department of Botany, Shri Guru Ram Rai College, Dehradun, India
S. Singh
Affiliation:
Department of Plant Breeding, Haryana Agricultural University, Hissar, India

Summary

Sixty families of each of two tomato triple test crosses (S 120 × EC 61747 and EC 31513 × Pusa Ruby) were raised in completely randomized blocks in two replications with two fertilizer levels. Perkins & Jinks' (1971) analysis was used to detect and measure the interactions of additive, dominance and epistatic effects of genes with micro- and macro-environments for flowering time, maturity period, number of branches, final height, number of locules, number of fruits per plant, yields per plant and weight per fruit. Additive and dominance gene effects were almost equally sensitive to micro- and to macro-environments. The j and l type epistasis was more sensitive to the environments than the i type epistasis.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1984

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References

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