外源有机硒对碱胁迫下的苹果砧木生理生化的影响

打开文本图片集

中图分类号：S661.1 文献标志码：A 文章编号：1002-2910（2025）05-0029-06

Effects of exogenous organic selenium powder on physiology and biochemistry of apple rootstocks under alkaline stress

ZHANG Yinuo，BAI Yaofei，WANG Hongrui， ZHAO Wenzhe， WU Qijie， XIAO Wei* （ShandongAgricultural University Collegeof Horticultural Science and Engineering/ Shandongfruitand vegetable quality and efcient production collaborative innovationcenter，Tai'an，Shandong 271ol8，China）

Abstract： Taking G935 apple rootstock seedlings as the test material， this study investigated the alleviating effect of exogenous organic selenium at three concentrations （5， 10， and 20g/kg， on the toxic damage caused by 90 mmol/L NaHCO stress. The results showed that， compared with the effect of alkali treatment alone， under the treatment of exogenous organic selenium， the relative electrical conductivity of the leaves of G935 apple rootstock seedlings decreased， the contents of two osmotic adjustment substances （proline and soluble protein） increased， and the activities of three antioxidant enzymes （superoxide dismutase， peroxidase，and catalase） enhanced. These effectively alleviated the physiological toxicity caused by alkali stress in G935 apple rootstock seedlings， among which the alleviating effect of organic selenium at the concentration of 5g/kg （204号 was the most significant.

Key words： G935 apple rootstock seedlings; sodium bicarbonate alkali stress; organic

selenium effect

土壤盐碱影响植物生长发育，对农业造成一定的威胁[1]。（剩余6754字）