Analysis of heterosis on seed vigor of maize
2008
Zhang Shupei | Wang Xi
chinois. 对12个玉米组合及其亲本的种子活力指标进行了杂种优势和亲子相关分析。结果表明,所有玉米种子活力指标均表现正向杂种优势。F1代田间幼苗干重与父本值、高亲值、双亲差值呈显著正相关;F1代低温发芽率与双亲差值呈显著负相关;F1代发芽指数与母本呈显著正相关;F1发芽势与母本值、低亲值呈显著正相关;F1代田间出苗率、幼苗高、标准发芽率、活力指数受亲本的影响较小,与父本、母本、中亲值、高亲值、低亲值和双亲差值相关系数均不显著。[著者文摘]
Afficher plus [+] Moins [-]anglais. The heterosis of the seed vigor and parent-offspring correlation between 12 maize cross combinations and their parents were analyzed to observe the corn heterosis in the seed vigor. The results showed that all seed vigor index had positive heterosis. The field-grown seedling dry weight of F1 was positively correlated with that of the male parent, high parent and difference between parents. The low temperature germination percentage of F1 was significantly negatively correlated with difference of the parents. The germination index of F1 had significantly positive correlation with that of the female parent. Germination tendency of F1 had significantly positive correlation with female parent and low-parent. The parents had little influence on field germination percentage, seedling height, standard germination percentage and vigor index of F1 and the correlation between these index and those of male parent, female parent,mid-parent, high-parent, low-parent and difference between the parents were not significant.
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