新疆农业科学2024，Vol.61Issue(6)：1345-1351,7.DOI:10.6048/j.issn.1001-4330.2024.06.006
花后高温胁迫对小麦籽粒萌发及相关酶活性影响
Effect of high temperature stress at anthesis on seed vigor of wheat
摘要
Abstract
[Objective]To clarify the effect of post-anthesis high temperature treatment on grain germi-nation and growth,and explore the psychological mechanism of wheat response to the stress of post-anthesis high temperature.[Methods]Xinchun 11,the main wheat cultivar in Xinjiang,was chosen as the model of crop.The mature wheat seeds were treated with the high temperature for 5 days to 8 days after flowering,and then the germination characteristics and the related enzymes activities associated with the oxidative stress of the seeds were examined.[Results]After high temperature treatment,the germination rate and germination po-tential of wheat grains were significantly reduced compared with the photo comparison(5.10%and 3.22%,respectively),and the conductivity index was significantly higher than that of the control(22.78%higher).After high temperature treatment,the bud length and fresh weight of wheat grain germination and growth de-creased by 17.98%and 12.84%compared with the CK,the germination index and vigor index decreased sig-nificantly in wheat grain germination.The change in seed viability(ttc reduction intensity)was not signifi-cant,but the decrease was 26.02%.Meanwhile,the germination index and vigor index both decreased signif-icantly in wheat grain germination.The change in seed viability(TTC reduction intensity)was not significant,but the decrease was 26.02%.[Conclusion]The results showed the high temperature stress at anthesis might have significant effects on wheat seed enzyme activity,and could further cause the decrease of the seed vigor and weaken the growth of wheat as a seedling,which might affect the wheat production ultimately.关键词
小麦/花后高温/籽粒萌发/淀粉酶/过氧化物酶Key words
wheat/seed germination/post-anthesis high temperature/amylase/peroxidase分类
农业科技引用本文复制引用
强立栋,冯宽,朱长安,赵云,李召锋,李卫华..花后高温胁迫对小麦籽粒萌发及相关酶活性影响[J].新疆农业科学,2024,61(6):1345-1351,7.基金项目
新疆生产建设兵团国际科技合作计划项目(2019BC003) （2019BC003）
石河子大学动植物育种专项(YZZX202003) International Science and Technology Cooperation Program Project of Xinjiang Production and Construction Corps(2019BC003) （YZZX202003）
Special Project of Animal and Plant Breeding of Shihezi University(YZZX202003) （YZZX202003）
