摘要
比较了大穗型和多穗型小麦品种的光合生理特性。结果表明 ,与多穗型品种豫麦 4 9相比 ,大穗型品种鲁麦 91 - 3具有较好的光合源和光合能力 ,在整个灌浆期旗叶具有较高的净光合速率和蒸腾速率 ,灌浆中后期旗叶叶绿素含量较高 ,叶面积系数 (L AI)衰减迟缓 ,叶片功能期较长。进一步提高大穗品种产量潜力的途径是 ,在保持或适当提高生物学产量的同时 。
The photo biological characters of large spike and multi spike wheat cultivars were comparatively studied.The results indicated that,compared with multi spike cultivars Yumai 49,large spike cultivars Lumai 91 3 had better quality of photosynthetic sources and ability of photosynthesis with higher net photosynthetic rate and transpiration rate of flag leaves during grain filling stage,higher chlorophyll content and lower decreasing of LAI in later stage,more accumulation of dry matter and lower harvest index.To improve the grain yields potential,one way is to increase its harvest index.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2003年第3期51-53,共3页
Journal of Northwest A&F University(Natural Science Edition)
基金
陕西省"九五"科技攻关项目 ( 2 0 0 2 A2 410 3 7)
