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| 温控条件下高温胁迫对紫花苜蓿地上部分生长的影响 | |
| 引用本文： | 李德锋,李朴芳,马保罗,王成章,郭玉霞,姜义宝.温控条件下高温胁迫对紫花苜蓿地上部分生长的影响[J].草地学报,2015,23(4):758-762. |
| 作者姓名： | 李德锋 李朴芳 马保罗 王成章 郭玉霞 姜义宝 |
| 作者单位： | 1. 河南农业大学牧医工程学院, 河南 郑州 450002; 2. 兰州大学生命科学学院, 甘肃 兰州 730000; 3. 加拿大农业部东方谷物研究中心, 加拿大 渥太华 |
| 基金项目： | 国家牧草产业技术体系，十二五科技支撑计划，加拿大项目 |
| 摘 要： | 本研究的目的在于探讨高温对紫花苜蓿(Medicago sativa)产量和形态的影响。试验采用盆栽方法,选取6个紫花苜蓿品种,将其种植在2个生长培养箱内,2个培养箱温度(白天/黑暗)分别设置为25/20℃和35/30℃,测定其产量、株高、叶部特征及叶片叶绿素含量。结果表明,高温胁迫使紫花苜蓿生长受到抑制,植株矮小,产量降低54%;单叶片叶面积缩小至常温的1/4,但叶片厚度增加了54%。综合上述结果可以看出,高温是生产中紫花苜蓿夏季减产的一个重要原因,紫花苜蓿对高温非常敏感,但会通过一系列形态上的变化来适应高温的胁迫。 |
| 关 键 词： | 紫花苜蓿 高温 产量 形态 |
| 收稿时间： | 2014-12-29 |
Effects of High Temperature on the Yield and Morphology of Alfalfa |
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| LI De-feng,LI Pu-fang,MA Bao-luo,WANG Cheng-zhang,GUO Yu-xia,JIANG Yi-bao.Effects of High Temperature on the Yield and Morphology of Alfalfa[J].Acta Agrestia Sinica,2015,23(4):758-762. | |
| Authors: | LI De-feng LI Pu-fang MA Bao-luo WANG Cheng-zhang GUO Yu-xia JIANG Yi-bao |
| Institution: | 1. College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, Henan Province 450002, China; 2. School of Life Science, Lanzhou University, Lanzhou, Gansu Province 730000, China; 3. Eastern Cereal and Oilseed Research Centre, Ottawa, Canada |
| Abstract: | In order to study the effects of high temperature on the yield and morphology of alfalfa (Medicago sativa),6 alfalfa varieties were planted in growth chamber with different day/night temperatures of 25/20℃ and 35/30℃. The results showed that heat stress decreased plant height, yield and leaf area. The yield of alfalfa plant decreased 54%, whereas the leaf thickness increased 54%. The data implied that heat stress was one of the main reasons reducing summer yields. Therefore, alfalfa is heat sensitive and can adapt to heat stress through a series of morphological changes. |
| Keywords: | Alfalfa High temperature Yield Morphology |
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