Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance
文献类型：期刊论文
| 作者 | Wassie, Misganaw1,2; Zhang, Weihong1; Zhang, Qiang3; Ji, Kang1,2; Chen, Liang1 |
| 刊名 | AGRONOMY-BASEL
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 9期号:10页码:20 |
| 关键词 | alfalfa evaluation growth heat stress physiological traits |
| DOI | 10.3390/agronomy9100597 |
| 英文摘要 | Alfalfa (Medicago sativa L.) is a valuable forage legume, but its production is largely affected by high temperature. In this study, we investigated the effect of heat stress on 15 alfalfa cultivars to identify heat-tolerant and -sensitive cultivars. Seedlings were exposed to 38/35 degrees C day/night temperature for 7 days and various parameters were measured. Heat stress significantly reduced the biomass, relative water content (RWC), chlorophyll content, and increased the electrolyte leakage (EL) and malondialdehyde (MDA) content of heat-sensitive alfalfa cultivars. However, heat-tolerant cultivars showed higher soluble sugar (SS) and soluble protein (SP) content. The heat tolerance of each cultivar was comprehensively evaluated based on membership function value. Cultivars with higher mean membership function value of 0.86 (Bara310SC) and 0.80 (Magna995) were heat tolerant, and Gibraltar and WL712 with lower membership function value (0.24) were heat sensitive. The heat tolerance of the above four cultivars were further evaluated by chlorophyll a fluorescence analysis. Heat stress significantly affected the photosynthetic activity of heat-sensitive cultivars. The overall results indicate that Bara310SC and WL712 are heat-tolerant and heat-sensitive cultivars, respectively. This study provides basic information for understanding the effect of heat stress on growth and productivity of alfalfa. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[31672482] ; National Natural Science Foundation of China (NSFC)[31401915] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000498268600031 |
| 出版者 | MDPI |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14584]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Chen, Liang |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Hunan Agr Univ, Coll Agron, Changshan 410000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wassie, Misganaw,Zhang, Weihong,Zhang, Qiang,et al. Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance[J]. AGRONOMY-BASEL,2019,9(10):20. |
| APA | Wassie, Misganaw,Zhang, Weihong,Zhang, Qiang,Ji, Kang,&Chen, Liang.(2019).Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance.AGRONOMY-BASEL,9(10),20. |
| MLA | Wassie, Misganaw,et al."Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance".AGRONOMY-BASEL 9.10(2019):20. |
入库方式： OAI收割
来源：武汉植物园
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