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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
The physiological characters and their physiological characteristics of new wheat lines Lankao86 (79) (source type), Yumai18 (bank type) and new large ear wheat line Huang812 4 (source and sink) were studied. And the grain weight of the relationship between the study. The results showed that the formation and development of “source” of source-sink type and source-sink type was more reasonable than that of the library type, and its photosynthetic potential, long leaf area, high photosynthetic rate, strong photosynthetic ability, The grain filling rate increased rapidly in the early period and then decreased gently in the late stage. Grain weight and grain filling rate showed a significant positive correlation, while the correlation between the limited type cultivars was not obvious. Leaf pairs of source-limited varieties, leaf sheath pairs of source and sink interaction varieties, stems on the limited varieties of grain weight contribution to the larger