新疆农业科学2024，Vol.61Issue(5)：1041-1047,7.DOI:10.6048/j.issn.1001-4330.2024.05.001
土壤水分对不同抗旱性春小麦品种叶片保护性酶活性及产量的影响
Effects of soil moisture on leaf protective enzyme activities and yield of spring wheat cultivars with different drought resistance
摘要
Abstract
[Objective]To study the effects of soil moisture on the yield of protective enzyme active agent in different drought-resistant varieties in the hope of providing theoretical basis for the breeding of drought-resistant spring wheat varieties.[Methods]Under field conditions,Xinchun 46 with strong drought resist-ance,Xinchun 37 with medium drought resistance and Xinchun 26 with weak drought resistance were used as experimental materials to study the effects of soil moisture on SOD,POD,CAT activities,MDA content and yield of flag leaves of spring wheat varieties with different drought resistance.[Results]With the increase of water deficit,the activities of SOD and CAT in flag leaves of wheat increased at flowering stage,and first in-creased and then decreased at filling stage.POD activity increased at flowering stage and then decreased,and increased at grout stage.MDA content showed an increasing trend.The SOD and POD activity of drought-re-sistant cultivar Xinchun 46>drought-resistant medium cultivar Xinchun 37>drought-resistant weak cul-tivar Xinchun 26 showed an opposite trend among varieties.The harvest panicle number,grain number per ear and yield decreased with the increase of water deficit.The harvest panicle number and grain number per ear of Xinchun 46 with strong drought resistance decreased less than those of Xinchun 37 and Xinchun 26 under lim-ited irrigation and deficit irrigation,and the yield of Xinchun 46 under water deficit was higher than those of the other two varieties.[Conclusion]Under the condition of limited irrigation and deficit irrigation,the flag leaves of Xinchun 46 with strong drought resistance had higher SOD and POD enzyme activities,lower MDA content,and stronger active oxygen scavenging ability,which effectively delayed the senility of wheat plants.Compared with the cultivars with moderate drought resistance and weak drought resistance,the number of harvested ears and grain per ear decreased less,which was conducive to higher yield under the condition of water deficit.关键词
春小麦/土壤水分/抗旱性品种/保护性酶活性/产量Key words
spring wheat/soil moisture/drought-resistant varieties/protective activity/yield分类
农业科技引用本文复制引用
张宏芝,樊哲儒,张跃强,王立红,时佳,孔德鹏,王重,高新,李剑峰,王春生,夏建强..土壤水分对不同抗旱性春小麦品种叶片保护性酶活性及产量的影响[J].新疆农业科学,2024,61(5):1041-1047,7.基金项目
新疆维吾尔自治区天山青年计划-杰出青年科技人才培养项目"新疆高产春小麦品种节水机制的生理生态学基础研究"(2020Q009) （2020Q009）
新疆维吾尔自治区重大科技专项子课题"新疆小麦生产气象灾害防控关键技术研究与集成示范"(2022B02001-3) Tianshan Youth Plan-Cultivation Project for Outstanding Young Scientific and Technological Talents of Autonomous Region"Physi-ological and Ecological Basis Research on Water-saving Mechanism of High-Yield Spring Wheat Varieties in Xinjiang"(2020Q009) （2022B02001-3）
Sub-project of Major Science and Technology Special Project of the Autonomous Region"Research and Integrated Demonstration on Key Technologies of Meteorological Disaster Prevention and Control in Wheat Production in Xinjiang"(2022B02001-3) （2022B02001-3）
