干旱区生态环境知识资源中心(Arid): 蓝箭的抗旱动态特征研究

Arid

	蓝箭的抗旱动态特征研究
其他题名	Study on Drought-resistance Characteristics of Juniperus formosana Blue ArrowUnder Osmotic Stress
	郑洁; 金洪; 潘青华
来源期刊	中国农学通报
ISSN	1000-6850
出版年	2012
卷号	28 期号:16 页码:73-76
中文摘要	为了研究国外引进品种蓝箭在中国北方较干旱地区的适应性,采用聚乙二醇6000(PEG-6000)在室内模拟干旱胁迫,测定不同程度干旱胁迫下蓝箭幼苗相对含水量、质膜透性、可溶性蛋白、游离脯氨酸、可溶性糖和丙二醛含量的变化。结果表明:蓝箭在PEG-6000处理下,各指标随时间变化出现相应的变化规律,相对含水量随处理时间的延长而降低,在第5天时,20%和30%浓度处理相对含水量明显下降,分别低于对照37.38%和56.60%,相对电导率、可溶性蛋白和丙二醛含量表现为先升高再降低,在处理15天时达到峰值,脯氨酸含量随处理时间延长升高,10天后升高变得缓慢,可溶性糖含量呈逐步上升趋势,20天时,3个处理浓度胁迫下的可溶性糖含量分别为对照的1.9倍、2.2倍、2.3倍。可见,蓝箭在干旱胁迫下通过改变渗透调解物质含量和水势,进而增强保水力来提高其抗旱能力,忍受较强的干旱胁迫伤害。
英文摘要	To Juniperus formosana Blue Arrowas the research object, using polyethylene glycol 6000 (PEG-6000) in the indoor simulated drought stress, testing the changes of RWC, relative conductivity, content of soluble protein, free proline, soluble sugar and MDA under drought stress of different degree. The results showed that, various index changes with time corresponding changes, RWC decreased with prolonged treatment, When dealing with a 5 days, 20% and 30% PEG treatment of RWC significantly decreased, respectively 37.38% and 56.60% lower than that of control, the relative conductivity and soluble protein and MDA content first increased and then decreased, they reached the peak in 15 days. The proline content increased with prolonged treatment and 10 days later increased slowly, soluble sugar content showed a gradual upward trend, on day 20, under 3 kinds of processing concentration stress, soluble sugar content respectively controlled 1.9, 2.2, 2.3 times. Therefore, these indices above indicated thatJuniperus formosanaBlue Arrow had the ability to resist drought conditions and to adapt relatively strong drought stress by adjusting its osmotic substance and water potential.
中文关键词	蓝箭 ; 渗透胁迫 ; 生理指标
英文关键词	Juniperus formosanaBlue Arrow osmotic stress physiological index
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:4682741
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378769
作者单位	郑洁, 内蒙古农业大学农学院, 呼和浩特, 内蒙古 010019, 中国.; 金洪, 内蒙古农业大学农学院, 呼和浩特, 内蒙古 010019, 中国.; 潘青华, 北京市农林科学院林果所, 北京 100093, 中国.
推荐引用方式 GB/T 7714	郑洁,金洪,潘青华. 蓝箭的抗旱动态特征研究[J],2012,28(16):73-76.
APA	郑洁,金洪,&潘青华.(2012).蓝箭的抗旱动态特征研究.中国农学通报,28(16),73-76.
MLA	郑洁,et al."蓝箭的抗旱动态特征研究".中国农学通报 28.16(2012):73-76.