分根交替干旱对马铃薯光合作用及抗氧化保护酶活性的影响  

Effect of Partial Rootzone Drying on Photosynthesis and Antioxidant Enzyme Activities in Potato Plant

作　　者：宿飞飞[1,2] 陈伊里[1] 徐会连 吕典秋[2] 王绍鹏[2] 李勇[2] 刘尚武[2] 秦斐斐[4] 李凤兰[1] 

机构地区：[1]东北农业大学,黑龙江哈尔滨150030 [2]黑龙江省农业科学院植物脱毒苗木研究所,黑龙江哈尔滨150086 [3]日本自然农法国际研究开发中心 [4]山东省花生研究所,山东青岛266100

出　　处：《作物杂志》2014年第4期115-119,共5页Crops

基　　金：国家科学技术支撑计划项目(2012BAD06B02);黑龙江省科技厅项目(WB13B107;PG13B01)

摘　　要：以黑龙江省主栽品种克新1号为材料,进行盆栽比较试验,研究了分根交替干旱对马铃薯光合生理特性和抗氧化酶活性的影响。结果表明,分根交替干旱作为一种根系干旱信号刺激的处理手段并未给马铃薯植株造成胁迫,反而通过增强叶片净光合速率(PN)、过氧化物酶(POD)、过氧化氢酶(CAT)和超氧化物歧化酶(SOD)等抗氧化保护酶活性提高植株的抗逆性,并在复水后仍能维持较高的活性。而干旱处理则对马铃薯植株造成胁迫,对植株的生长带来负面影响。The present experiment analyzed leaf photosynthesis and antioxidant enzyme activities by partial rootzone drying in potato plant. The experiment used the main cuhivar ＂Kexin No. 1＂ in Harbin under pot cultivation. The results showed that partial rootzone drying as one application of root drought signal stimulus did not cause potato plants stress. The ability of drought resistance was improved by increasing leaf net photosynthetic rate and antioxidant enzyme activities during the partial rootzone drying treatment. And the antioxidant enzyme activities could keep high after water recovery. However, damages were caused by drought stress treatment which had a negative impact on potato plant growth.

关 键 词：马铃薯 分根交替干旱 光合特性 抗氧化酶 

分 类 号：S532[农业科学—作物学]