Determination of Combining Ability and Heterosis of Grain Yield Components for Maize Mutants Based on Line×Tester Analysis
نویسندگان
چکیده
منابع مشابه
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Estimation of heterosis for grain yield components in Maize (Zea mays L.)
Heterosis plays an important role in achieving improvement in crop production. About 69 F 1 hybrids obtained by crossing twenty three lines and three testers in a line × tester fashion were used to derive the information on degree of heterosis over mid, better and standard parent in maize. Sixty nine crosses and their parents including one check CoH(M)5 were evaluated in a Randomized Block Desi...
متن کاملCombining Ability and Heterosis for Yield and Component Characters in Maize
Heterosis and the nature and combining ability was studied in 7 × 7 diallel cross in maize for grain yield and yield contributing characters. The significant estimates of GCA and SCA variances suggested the importance of both additive and non-additive gene actions for the expression studied traits. Preponnderance of additive gene action was noticed for ear diameter and 1000-kernel weight and th...
متن کاملCombining ability and heterosis for diastatic activity in grain sorghum
Eighty-five sorghum (Sorghum bicolor (L.) Moench) entries including 13 restorer-lines (lines), 5 maintainer-lines (testers), 65 F1 hybrids, and two controls, were grown at Muzarabani, Zimbabwe during the rainy seasons of 1986/87 and 1987/88 to study the combining ability and heterosis for diastatic activity. Grain samples were evaluated for diastatic activity, expressed in Sorghum Diastatic Uni...
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ژورنال
عنوان ژورنال: Asian Journal of Crop Science
سال: 2014
ISSN: 1994-7879
DOI: 10.3923/ajcs.2015.19.33