大豆开花后阶段对开花前不同光照处理的反应

试验研究了开花前不同光照处理对大豆开花后的发育、产是必品质性状的影响。结果表明，对于供试的早熟品种来说，开花前短日处理促进成熟的作用远大于对开花的促进，地农艺性状的影响大于对发育进程的促进。前期短日处理使大豆蛋白质、脂肪含量和油酸的比例上升，而使亚油酸的比例下降。文中讨论了开花前光照后效应的作用方式和可能的机制。

THE POST-FLOWERING RESPONSES OF SOYBEAN TO PRE-FLOWERING PHOTOPERIODIC TREATMENTS

The effects of pre- flowering photoperiodic treatments on the post-flowering-development,yield formation and chemical quality of soybeans were studied. The results demonstrated that in the early soybean varieties the hastening effect of pre- flowering short days on maturity was more significant than on flowering time and the effects on agronomic characteristics were more evident than on developmental proceeding. Protein and oil contents and proportion of oleic acid in oil were increased and the proportion of linoleic acid was decreased when treated with short days before flowering. The role and the possible mechanism of the photoperiodic after- effect were discussed.