早熟、高产小麦品种光合生理特性研究

Studies on Photosynthetic and Physiological Characters of Early Maturing and High Yield Wheat Varieties

对丰产的早熟类型品种与中、晚熟高产品种的光合生理特性和物质积累与分配的动态规律进行了比较研究。结果表明 ,丰产的早熟类型品种花期至灌浆高峰期有持续稳定高的光合速率。光合物质转运率高 ,灌浆速度快。不仅能充分利用花后同化产物 。

Photosynthetic and physiological characters and matter accumulation and distribution of high yield varieties for early, medium and late maturity types were comparatively studied. The results showed that high yield varieties of early maturity type had steady higher photosynthetic rate from anthesis flowering stage to top filling stage. Photosynthetic matter transportation ratio and filling rate were higher. The varieties of early maturity type not only utilize efficiently assimilative products after anthesis but also allocate and transport effectively stored materials before anthesis for grain filling.