【摘要】 以大粒小麦新品系兰考 86 (79) (源限型 )、豫麦 18号 (库限型 )和大穗小麦新品系黄 812 4(源库互作型 )为材料 ,对其生理特点及其与穗粒重的关系进行了研究。结果表明 ,源限型和源库互作型品种“源”的形成和发展较库限型品种更为合理 ,其光合势大 ,叶面积持续时间长 ,光合生产率高 ,叶片光合性能强 ,粒重增长快 ,穗部性状优良 ;子粒灌浆速度前期增加快 ,后期下降平缓 ,粒重与灌浆速度呈显著的正相关 ,而库限型品种这种相关关系不明显。叶片对源限型品种、叶鞘对源库互作型品种、茎秆对库限型品种子粒增重贡献较大更多还原

【Abstract】 The research was carried out on the relationships between physiological characteristics and spike kernel weight of different types by using new big kernel wheat strain Lankao 86(79) (source limiting type)、Yumai 18 (sink limiting type) and new big spike wheat strain Huang 8124 (source sink interacting type) as test materials. The main results was as follows: (1) The sources formation and development of source limiting type and source sink interacting type varieties is more reasonable than sink limiting type one. They have bigger photosynthetic superiority, longer continued time of leaf area, higher photosynthetic reduction efficiency, stronger photosynthetic property of leaves. (2) Source limiting type and source sink interacting type varieties grain weight increases quickly, their spike characters are superior to sink limiting type one. (3) Leaves of source limiting type variety、leaf sheaths of source sink interacting type one、stem of sink limiting type one contribute more to kernel’s increasing weight than other organs. (4) Kernel milking speed of source limiting type and source sink interacting type varieties increases quickly in earlier stage and decreases slowly in later stage, it presented significant positive correlation between grain weight and milking speed, but to the sink limiting type variety, this correlation isn’t evident.更多还原