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密植条件下玉米弱势粒败育和灌浆受限是玉米产量挖潜的重要限制因子。系统总结了作物弱势粒库特征及其相关生理过程研究进展,探讨了玉米弱势粒败育启动因子、弱势粒灌浆障碍与库容量和库活性关系、弱势粒库特征与激素和多胺水平的关系及外源调控途径,提出了玉米密植群体弱势粒库特征及其主控生理基础研究中存在的问题和思路,为明确玉米密植群体弱势粒库特征及其调控途径提供参考。
Inoculation of corn under weak grain abortion and grain filling constraints is an important limiting factor in corn production tapping potential. We systematically summarized the research progress on the characteristics of weak grain pools and their related physiological processes. We also discussed the relationship between the promoters of inferior seed kernels and the capacity and activity of weak stocks, the relationships between the characteristics of weak seed banks and the levels of hormones and polyamines And the ways of exogenous regulation, the problems and ideas existed in the study on the characteristics of weak grains in maize close-planting population and its main physiological basis were put forward, which provided references for clarifying the features of weak grains in maize close-planting population and their regulation ways.