| Low temperature wheat germplasm and its leaf photosynthetic traits and structure characteristics |
| |
| 作者姓名： | ZHANG Songwu MIAO Fang WANG Changfa |
| |
| 作者单位： | Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China,Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China,Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China |
| |
| 摘 要： | Low temperature germplasm with constant low plant temperature was found in the nature through a long-time observation on wheat canopy temperature and traits; correspondingly, high temperature germplasm with constant high plant temperature also exists. Compared with the high temperature germplasm, the chlorophyll content and the net photosynthetic rate of the three functional leaves on the top of the low temperature wheat germplasm are higher and the structure tends to be more complicated, which is characterized by smaller mesophyll cells and more closely arranged cell layers, more and denser chloroplasts with thick stroma, more granas and well developed grana lamellae, a larger vascular bundle area with smaller interspace. All these characteristics embody the consistency of structure and function and provide the theoretical bases for looking for and cultivating the new low temperature materials in agricultural practice.
|
| 关 键 词： | low temperature wheat germplasm leaf photosynthetic trait structure |
Low temperature wheat germplasm and its leaf photosynthetic traits and structure characteristics |
| |
| ZHANG Songwu,MIAO Fang,WANG Changfa.Low temperature wheat germplasm and its leaf photosynthetic traits and structure characteristics[J].Progress in Natural Science,2004,14(6):483-488. |
| |
| Authors: | ZHANG Songwu MIAO Fang WANG Changfa |
| |
| Institution: | Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China |
| |
| Abstract: | Low temperature germplasm with constant low plant temperature was found in the nature through a long-time observation on wheat canopy temperature and traits; correspondingly, high temperature germplasm with constant high plant temperature also exists. Compared with the high temperature germplasm, the chlorophyll content and the net photosynthetic rate of the three functional leaves on the top of the low temperature wheat germplasm are higher and the structure tends to be more complicated, which is characterized by smaller mesophyll cells and more closely arranged cell layers, more and denser chloroplasts with thick stroma, more granas and well developed grana lamellae, a larger vascular bundle area with smaller interspace. All these characteristics embody the consistency of structure and function and provide the theoretical bases for looking for and cultivating the new low temperature materials in agricultural practice. |
| |
| Keywords: | low temperature wheat germplasm leaf photosynthetic trait structure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《自然科学进展(英文版)》浏览原始摘要信息 |
| 点击此处可从《自然科学进展(英文版)》下载免费的PDF全文 |
