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Genetics of Phosphorus Efficiency in Tropical Maize

机译:热带玉米磷效率的遗传

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摘要

An inheritance study of P use efficiency and it component P acquisition and P internal utilization efficiency was conducted in seven tropical maize crosses obtained from inbred lines contrasting for these traits. The parents, Fl's, BC1 and BC2 for both parents were evaluated in three low P and two high P environments. Non additive gene action (dominance and epistasis) was more important than additive gene action for the majority of the traits studied. Selection criteria and breeding strategies for these traits are discussed. Higher importance of P acquisition efficiency than P internal utilization efficiency over P use efficiency was verified.
机译:从自交系获得的七个性状进行比较,对七个利用性状的热带玉米杂交种进行了磷利用效率及其构成要素磷获取和磷内部利用效率的遗传研究。在三个低P和两个高P环境中评估了两个父母的F1's,BC1和BC2。对于大多数研究的性状,非加性基因作用(显性和上位性)比加性基因作用更重要。讨论了这些性状的选择标准和育种策略。验证了磷获取效率比磷内部利用效率比磷利用效率更高的重要性。

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