| 小麦叶片日光合高值持续时间基因型差异的初步研究 |
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| 引用本文： | 魏爱丽,王志敏.小麦叶片日光合高值持续时间基因型差异的初步研究[J].西北植物学报,2004,24(8):1493-1496. |
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| 作者姓名： | 魏爱丽 王志敏 |
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| 作者单位： | 1. 太原师范学院,生物系,太原,030001
2. 中国农业大学,农学与生物技术学院,北京,100094 |
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| 基金项目： | 973国家重点基础研究发展规划项目 G19980101000，国家自然科学基金资助项目 30270780 |
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| 摘 要： | 首次把“日高值光合作用持续时间”作为重要的光合特性进行了基因型比较研究，研究了不同基因型小麦开花期旗叶光合速率的日变化和日光合量的变化，提出了“日光合高值持续时间”的概念。结果表明：日光合高值持续时间和日光合量在基因型间存在显着差异．所有基因型都存在不同程度午休现象，矮秆、大穗基因型午休现象较轻，有利于日高值光合持续时间。日光合高值持续时间长，日光合量大，有利于干物质生产。
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| 关 键 词： | 小麦 基因型 日光合高值持续时间 日光合量 |
| 文章编号： | 1000-4025(2004)08-1493-04 |
Study on genotype difference of diurnal high photosynthesis duration hours in wheat flag leaves |
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| WEI Ai-li,WANG Zhi-min.Study on genotype difference of diurnal high photosynthesis duration hours in wheat flag leaves[J].Acta Botanica Boreali-Occidentalia Sinica,2004,24(8):1493-1496. |
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| Authors: | WEI Ai-li WANG Zhi-min |
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| Institution: | WEI Ai-li~1,WANG Zhi-min~2 |
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| Abstract: | The comparative study on the DHPDH (Diurnal High Photosynthesis Duration Hours) of different wheat genotypes was carried out for the first time as a important photosynthesis parameter.DHPDH and diurnal photosynthetic capacity (DPC) of flag leaves in different genotype wheat during anthesis were studied.A new concept of diurnal high photosynthesis duration hours (DHPDH) was brought forward.The results showed that all of genotypes we have selected have the phenomena of midday depress.Genotypes with short stem or big ear had short midday depress time.There are notable differences in DPC and DHPDH among genotypes.The shorter of midday depress time,the longer DHPDH and the more of DPC,the more benefit for dry matter's production. |
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| Keywords: | wheat genotype DHPDH DPC |
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