Analysis Of The Genetic Potential For Four Improvement Maize Populations

Quality, multi-resistant, high yield and wide adaptability of germplasm resources scarcerestrict further improve of China's corn breeding and production levels, To alleviate thisstriking contradiction, Corn breeders have done a lot of research. artificial improvement maizepopulations and24combinations by incomplete diallel cross design are for tested materials,agronomic traits and their combining ability, heterosis from four artificial improvementmaize populations is more comprehensive and systematic researched,The results show that：1. In addition to the silking stage, ear diameter, Ear row number, the other9traits infour populations have shown a significant or very significant differences, differences betweendifferent groups is real.2. Results of combining Ability Analysis showe that: as to GCA effects of each trait, Pgroup is one of the best groups, Followed by MEI MA and MEI YING groups, Huang Qun isfor the worst performance. as to the SCA effect of the yield per plant. Combination HuangQun×Qi319, P group×Mo17, MEI MA×Huang zao si, MEI YING×in319, MEI Ma×Wu105have high SCA values.3. Heterosis analysis showes that: P group, respectively, Dan Lancaster represented byDan340and Lu da hong gu represented by Mo17groups may constitute a pair of heteroticpatterns. Huang Qun and P group represented by Qi319may constitute a pair of heteroticpatterns. MEI MA or MEI YING groups and Lu da hong gu represented by Dan340and Pgroup represented by Qi319may constitute a pair of heterotic patterns.4. Cluster analysis for the specific combining ability show that: P group and Qi319areclassified as a class, Huang Qun and Huang zao si are classified as a class, MEI MA and478or Qi319are classified as a class, MEI YING and Mo17are classified as a class.Resultsof agronomic traits clustering show that: MEI MA and MEI YING are clustered a class, Huang...