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| 5个草地早熟禾品种在干热胁迫下的生理响应 | |
| 引用本文： | 杜建雄,孙吉雄,刘金荣,谢晓蓉.5个草地早熟禾品种在干热胁迫下的生理响应[J].草原与草坪,2007(3):41-44. |
| 作者姓名： | 杜建雄 孙吉雄 刘金荣 谢晓蓉 |
| 作者单位： | 1. 甘肃农业大学,草业学院,甘肃,兰州,730070 2. 甘肃农业大学,草业学院,甘肃,兰州,730070;河西学院,生物系西部资源环境化学重点实验室,甘肃,张掖,734000 3. 河西学院,生物系西部资源环境化学重点实验室,甘肃,张掖,734000 |
| 摘 要： | 高温和干旱是冷季型草坪草的两个重要胁迫因子。试验将5个早熟禾品种进行干热胁迫处理21 d,每隔3 d评定草坪质量(TQ)、叶片萎蔫率(LW)、测定叶片相对电导率(EL)、叶片相对含水量(RWC)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性和丙二醛(MDA)含量的变化。结果显示,随着干热胁迫天数的增加,草坪质量、叶片相对含水量、超氧化物歧化酶和过氧化氢酶的活性都明显下降,而叶片萎蔫率、叶片相对电导率和丙二醛的含量却明显上升。 |
| 关 键 词： | 早熟禾 干热胁迫 生理变化 |
| 文章编号： | 1009-5500（2007）03-0041-04 |
| 收稿时间： | 2006-12-10 |
| 修稿时间： | 2006-12-102006-12-30 |
Physiological response of 5 Kentucky bluegrass to drought and heat stress |
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| DU Jian-xiong,SUN Ji-xiong,LIU Jin-rong,XIE Xiao-rong.Physiological response of 5 Kentucky bluegrass to drought and heat stress[J].Grassland and Turf,2007(3):41-44. | |
| Authors: | DU Jian-xiong SUN Ji-xiong LIU Jin-rong XIE Xiao-rong |
| Institution: | 1.Pratacultural College of Gansu Agricultural University,Lanzhou 730070, China ;2.Dep. of Biology,Key Laboratory of Resources, Environment and Chemistry of West China, Hexi College, Zhangye 734000, China |
| Abstract: | High temperature and drought were two major factors,which greatly limited the growth of cool-season turfgrass.In this study,5 Kentucky bluegrass turfgrasses were exposed to simultaneous drought and heat stress(without irrigation) for 21 days until wilting.During the stress period,all measurements were made in 3 days intervals in the experiment.Turf quality(TQ),leaf-wilting rate(LW),electrolyte leakage(EL),relative water content(RWC),superoxide dismutase(SOD),catalase(CAT) and malondialdehyde(MDA) were determined.The results indicated that the TQ,RWC,SOD and CAT decreased with the stress time,however,the LW,EL and MDA increased. |
| Keywords: | Kentucky bluegrass drought and heat resistance physiological response |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |