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当前位置: 首页 > 文章 > 长期中度干旱下3种苹果砧木水分利用效率评价 河北农业大学学报 2024,47 (1) 74-82
Position: Home > Articles > Evaluation of water use efficiency of three varieties of apple rootstocks under long term moderate drought stress Journal of Agricultural University of Hebei 2024,47 (1) 74-82

长期中度干旱下3种苹果砧木水分利用效率评价

作  者：
李晓涵;刘怡童;胡玮;李中勇;周莎莎
单  位：
河北农业大学园艺学院
关键词：
苹果砧木;干旱胁迫;水分利用效率
摘  要：
为评价干旱胁迫下不同苹果砧木的水分利用效率和探究产生差异的生理机制,本试验以平邑甜茶为基砧,选取'13#30''M9'和'10-1'3 种苹果砧木为接穗进行芽接.采用盆栽控水法,设置正常供水和中度干旱胁迫 2 种水分处理,处理时间为 60 d.测定了 3 种苹果砧木在干旱胁迫下的瞬时水分利用效率(WUEi)和长期水分利用效率(WUEL)以及相关形态生理指标,并对上述指标进行了相关性分析.结果表明:干旱胁迫后,'M9'的WUEi显著提高,'13#30'和'10-1'的WUEi分别显著降低和无显著差异.WUEL 从大到小排序为:M9>13#30>10-1.同时,WUEi与类胡萝卜素含量和可溶性蛋白含量呈显著正相关(P≤0.05);WUEL与根冠比、CAT活性和脯氨酸含量呈显著正相关,与Pn呈显著负相关,且与Tr呈极显著负相关(P≤0.01).本研究对高WUE的苹果砧木品种的选育及推广利用具有重要的指导作用,并为评价苹果砧木WUE提供了理论依据.
译  名：
Evaluation of water use efficiency of three varieties of apple rootstocks under long term moderate drought stress
关键词：
apple rootstock%drought stress%water use efficiency
摘  要：
In order to evaluate the water use efficiency of different varieties of apple rootstocks under drought stress and explore the physiological mechanisms causing the differences,this experiment used one-year-old malus hupehensis as the base stock and selected three varieties of apple rootstocks('13#30''M9'and'10-1')as scions for budding.This experiment adopted the potted water control method for 60 days with two water treatments including normal water supply and moderate drought stress,and the treatment time is 60 days.We measured the instantaneous water use efficiency(WUEi)and long-term water use efficiency(WUEL)of the three varieties of apple rootstocks under drought stress,as well as related morphological and physiological indicators,and conducted correlation analysis on the above indicators.The results showed that after long-term moderate drought stress,significantly increased,the WUEi of the leaves of rootstock'M9'while the WUEi of the leaves of rootstock'13#30'decreased significantly.And the leaf WUEi rootstock'10-1'showed no significant variation.Meanwhile,at the end of drought treatment,the WUEL ranking of the three varieties of apple rootstocks was as follows:M9>13#30>10-1.Furthermore,WUEi showed a significant positive correlation with carotenoid content and soluble protein content(P≤0.05);WUEL showed a significant positive correlation with root to shoot ratio,CAT activity and proline content.And WUEL significantly negatively correlated with Pn,and extremely significantly negatively correlated with Tr(P≤0.01).This study has important guiding significance for the breeding and promotion of high WUE apple rootstock varieties,and provides a theoretical basis for evaluating the WUE of apple rootstocks.

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