Indian Journal of Agricultural Research
Year : 2003, Volume : 37, Issue : 3
First page : ( 219) Last page : ( 222)
Print ISSN : 0367-8245.

Combining ability analysis for yield and some growth characters in maize (Zea mays L.)

Rana M.K.*, Kapoor Vinod

Department of Plant Breeding and Genetics, Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176062, India.

* Preseht address: NRC on DNA Fingerprinting, NBPGR, Pusa Campus, New Delhi - 110 012.

Abstract

Combining ability studies were conducted in a 10 x 10 diallel crosses (excluding reciprocals) among ten inbred parents and F₁ cross combinations for yiekl and some growth parameters. The studies revealed significant GCA and SCA variance estimates for an the characters studied. Preponderace of non-additive gene effects was observed in the expression of an the traits studied. Parent P₁₀ was found to be good general combiner for an the growth parameters while P₂ was good for grain yield and leaf growth rate. Cross combination P₃ x P₈ had good SCA effects for an the traits studied and is expected to yield segregants having desirable character associations of yieldwith growth parameters. Cross combinations P₄ x P₆, P₅ x P₈ and P₅x P₇ are desirable for higher grain yield.

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