| 高温胁迫对粉带扦插苗形态和生理特征的影响 |
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| 引用本文： | 夏钦,何丙辉,刘玉民,徐健.高温胁迫对粉带扦插苗形态和生理特征的影响[J].生态学报,2010,30(19):5217-5224. |
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| 作者姓名： | 夏钦 何丙辉 刘玉民 徐健 |
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| 作者单位： | 西南大学资源环境学院,西南大学三峡库区生态环境教育部重点实验室,重庆,400715 |
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| 基金项目： | 国家林业局“948”项目(2006-4-88)；重庆市自然科学基金重点资助项目(CSTC-2008BA7032)；西南大学青年基金项目(SWU208048)；中央高校基本科研专项资金(XDJK2009C143)；西南大学生态学重点学科“211工程”建设经费资助；重庆市科技攻关重点项目(CSTC2009AB1115) |
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| 摘 要： | 对粉带扦插苗进行高温处理,研究高温胁迫对其外观形态和生理生化指标的影响。结果表明,35℃高温胁迫或40℃高温胁迫短时间(2d)内,扦插苗受害指数和大部分生理生化指标均与对照差异不显著,粉带未产生热伤害;40℃高温胁迫长时间(3d)或45℃高温胁迫短时间(2d)内,粉带产生较严重的热伤害,但植株仍能自我调节和恢复,受害指数、可溶性蛋白、可溶性糖、Pro、MDA含量、SOD和CAT活性均急剧上升,叶绿素、类胡萝卜素含量明显减少,POD活性略有降低;45℃高温胁迫3d,对粉带产生热伤害,各项生理生化指标急剧下降,40%的扦插苗整株萎蔫枯死,大部分植株已无法通过自身调节恢复。粉带叶片的叶绿素、Pro、MDA含量和POD活性在高温胁迫时变化明显,且4种指标与受害指数之间具有显著相关性,其相关系数绝对值均在0.88(P0.001)以上,可作为耐热性鉴定指标。
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| 关 键 词： | 粉带 高温 胁迫 形态变化 生理反应 |
| 收稿时间： | 2009/8/22 0:00:00 |
| 修稿时间： | 7/8/2010 12:00:00 AM |
Effects of high temperature stress on the morphological and physiological
characteristics in Scaevola albida cutting seedlings |
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| XIA Qin,HE Binghui,LIU Yumin,XU Jian.Effects of high temperature stress on the morphological and physiological
characteristics in Scaevola albida cutting seedlings[J].Acta Ecologica Sinica,2010,30(19):5217-5224. |
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| Authors: | XIA Qin HE Binghui LIU Yumin XU Jian |
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| Institution: | Southwest University (South Campus) College of Resources and Environment,Southwest University (South Campus) College of Resources and Environment,Southwest University (South Campus) College of Resources and Environment, |
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| Abstract: | High temperature stress is one of the important ecological factors affecting growth and development,and physiological characteristics in many plants.On the other hand,plants adapt different strategies for improving high temperature tolerance during their life cycling.Scaevola albida is a popular ornamental flowering crop cultivated as a bedding plant or as a beautiful cultivar in hanging baskets.Pink Ribbon,one of Scaevola albida's cultivated species originated from Australia,is a perennial herb with charac... |
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| Keywords: | Scaevola albida high temperature stress morphological change physiological response |
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