干旱区生态环境知识资源中心(Arid): 干旱气候条件下水分胁迫对辣椒叶片生理特性的影响

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	干旱气候条件下水分胁迫对辣椒叶片生理特性的影响
其他题名	EFFECTS OF WATER STRESS ON THE PHYSIOLOGICAL CHARACTERISTICS OF PEPPER LEAVES IN ARID CLIMATES
	刘佳; 郁继华; 徐秉良; 颉建明
来源期刊	核农学报
ISSN	1000-8551
出版年	2012
卷号	26 期号:8 页码:1197-1203
中文摘要	以"陇椒2号"辣椒为材料,研究了正常水分处理、轻度水分胁迫和中度水分胁迫对辣椒叶片MDA含量、保护酶活性及叶绿素荧光参数的影响,以确定甘肃省干旱气候条件下满足辣椒正常生长的土壤水分。结果表明:随着处理时间的延长,3种处理下辣椒叶片的MDA含量呈上升的趋势,SOD和POD活性均呈现先升高后降低的趋势;中度水分胁迫下辣椒叶片MDA含量和SOD活性均高于另外2个处理,POD活性在处理前期较高,在处理后期则下降;3种处理下辣椒叶片的Fv/Fm、Fv’/Fm’、ФPSII和qP指标均表现出先上升后下降的趋势,在处理后期,中度水分胁迫下的叶片上述指标较低;3种处理下辣椒叶片的NPQ指标变化趋势与qP指标的趋势相反,在轻度水分胁迫下2个指标的变化较为平缓。综合结果说明在水资源相对匮乏的干旱地区,轻度水分胁迫(田间持水量的60%)可以满足辣椒的正常生长需要。
英文摘要	In this paper, a pepper variety of LongJiao NO.2 was employed to investigate effects of treatments of normal water, light and severe water stress on MDA content, protective enzyme activities, chlorophyll fluorescence parameters in pepper leaves, in order to determine the soil moisture for the peppers normal growth in the arid climate of Gansu province. Results showed that MDA content in pepper leaves under the three different treatments showed an increasing trend, activities of SOD and POD were increased firstly and then decreased. Under severe water stress, MDA content and SOD activities in leaves were higher than the other two treatments with higher early-POD activity and lower late-POD. The Fv/Fm, Fv’/Fm’, ФPSII and qP in leaves under three different treatments increased firstly and then dropped. The above mentioned indexes in leaves were lower after treated by severe water stress. The NPQ data in leaves under all the treatments were opposite to the trends of the qP data, and after treated with lighter water stress, NPQ and qP in leaves showed flat variations. These findings suggested that lighter water stress (60% of soil water content) could meet the peppers normal growth need in arid region where water resource is deficient.
中文关键词	干旱气候 ; 水分胁迫 ; 辣椒 ; MDA含量 ; 保护酶活性 ; 叶绿素荧光参数
英文关键词	arid climate water stress pepper MDA content protective enzyme activities chlorophyll fluorescence parameters
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:4720540
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228235
作者单位	刘佳, 甘肃农业大学草业学院,中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室, 兰州, 甘肃 730070, 中国.; 徐秉良, 甘肃农业大学草业学院,中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室, 兰州, 甘肃 730070, 中国.; 郁继华, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 颉建明, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	刘佳,郁继华,徐秉良,等. 干旱气候条件下水分胁迫对辣椒叶片生理特性的影响[J]. 甘肃农业大学,2012,26(8):1197-1203.
APA	刘佳,郁继华,徐秉良,&颉建明.(2012).干旱气候条件下水分胁迫对辣椒叶片生理特性的影响.核农学报,26(8),1197-1203.
MLA	刘佳,et al."干旱气候条件下水分胁迫对辣椒叶片生理特性的影响".核农学报 26.8(2012):1197-1203.