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当前位置: 首页 > 文章 > 根区温度对辣椒幼苗生理特性的影响 华北农学报 2014,29 (5) 159-163
Position: Home > Articles > Effects of Root Zone Temperature on Physiological Characteristics of Pepper Seedlings Acta Agriculturae Boreali-Sinica 2014,29 (5) 159-163

根区温度对辣椒幼苗生理特性的影响

作  者：
廉勇;崔世茂;包秀霞;王葆生
单  位：
内蒙古农牧业科学院;内蒙古农业大学;呼和浩特民族学院
关键词：
根区温度;辣椒;幼苗;生理特性
摘  要：
为探讨冬季日光温室土壤温度对作物水分吸收、保护酶、渗透调节物质以及质膜透性的影响,以辣椒品种长金、迅驰37-74和运驰37-82为研究试材,对20~22,14~16,10~12℃3个温度处理下辣椒幼苗茎叶和根系的含水量,叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,脯氨酸(Pro)、丙二醛(MDA)含量和渗透电解率质膜透性进行了测定。结果表明,随着根区温度的下降,辣椒幼苗含水量呈现下降趋势,其中10~12℃处理含水量最低;叶片SOD、POD和CAT活性表现为下降的趋势;Pro、MDA、超氧阴离子含量以及电解渗透率表现为逐渐升高的趋势。综上所述,10~12℃处理对辣椒幼苗生理生化特性和含水量影响程度明显高于处理20~22,14~16℃,以生理生化特性和含水量为衡量指标,根区温度14℃及以上时,辣椒植株可以保持正常的生长发育。
译  名：
Effects of Root Zone Temperature on Physiological Characteristics of Pepper Seedlings
作  者：
LIAN Yong;CUI Shi-mao;BAO Xiu-xia;WANG Bao-sheng;Agricultural College,Inner Mongolia Agricultural University;Vegetable Institute,Inner Mongolia Academy of Agricultural and Animal Husbandry Science;Department of Environmental Engineering,Huhhot University for Nationalities;
关键词：
The root zone temperature;;Pepper;;Seedling;;Physiological characteristics
摘  要：
To probe into the sunlight greenhouse soil temperature in the winter stress on crop water content,protective enzymes,osmolyte and membrane permeability in pepper,we comparatively studied three treatment( 20-22,14- 16,10- 12 ℃),the water contents of seedling stems and roots,the activities of super oxede-dismutase( SOD),peroxidase( POD),catalase( CAT),proline( Pro),malondialdehyde( MDA) and electrolytic permeability contents were determined by using Changjin,Xunchi 37- 74 and Yunchi 37- 82 in pepper. The results showed that as the root zone temperature dropped the seedling water content appeared the tendency of decline,among water content was the lowest in 10- 12 ℃ treatment. The activities of SOD,POD and CAT in leaf appeared the trend of decline. The contents of Pro,MDA and electrolytic perme ability appeared the trend of rising. In a word,10- 12 ℃treatment on influencing degree of water content,physiological and biochemical characteristics in pepper seedlings was significantly higher than 20- 22,14- 16 ℃ treatments. Taking physiological and biochemical characteristics as measurement index,we concluded that pepper could still keep its normal growth and development when the root zone temperature over 14 ℃.

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