Analysis of Combining Ability of Drought Tolerance in Maize

By using complete-diallel cross design (Griffing method I), the influence of the combination of different high-yield genotypes of maize on the drought tolerance of their offspring, the general combining ability, the specific combining ability and the back cross effect of drought tolerance between pa...

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Bibliographic Details
Published inHunan agricultural science & technology newsletter : HASTN Vol. 14; no. 9; p. 1259
Main Authors Han, Dengxu, Shi, Shubing, Liang, Xiaoling, Abula, Abulaiti, Yang, Jie, Shao, Hongyu, Li, Mingdong
Format Journal Article
LanguageEnglish
Published Changsha Wu Chu (USA-China) Science and Culture Media Corporation 01.09.2013
Subjects
Drought
Germplasm
Irrigation
Variance analysis
Water area
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Summary:By using complete-diallel cross design (Griffing method I), the influence of the combination of different high-yield genotypes of maize on the drought tolerance of their offspring, the general combining ability, the specific combining ability and the back cross effect of drought tolerance between parents and the main genetic parameters for drought tolerance were analyzed. The result indicated that there were significant differences in general combining ability effects of maize. There were highly significant differences in special combining ability effects and there was no significant difference in reciprocal effects. The influence of the genetic additive effect on the drought tolerance of offsprings varied with different parents and combinations. Therefore, the expression of drought tolerance inheritance genes was determined only by the additive and non-additive genetic effects but had little relationship with reciprocal effects. The selection of drought tolerance of maize should be conducted at higher generations.
ISSN:1009-4229