草原与草坪2025，Vol.45Issue(6)：33-39,7.DOI:10.13817/j.cnki.cyycp.2025.06.004
低温胁迫对不同播期两个冬黑麦品种抗寒性和糖类物质含量的影响
Effects of low temperature stress on cold resistance and carbohydrate content of two winter rye varieties with different sowing dates
摘要
Abstract
[Objective]The aim of the study is to explore the effects of sowing date and variety on the cold resis-tance of winter rye and its correlation with the content of carbohydrates in tillering nodes,to reveal the physiological mechanism of winter rye adapting to low temperature stress,and to provide theoretical basis for the production of win-ter rye in Horqin sandy land.[Method]Two rye varieties,Dongmu 70 and Baiji No.1,were sown in Horqin sandy land on September 15 and September 25,2022.In the early stage of overwintering,winter rye was taken for low tem-perature stress treatment(-10℃,-20℃,-30℃),and low temperature cold storage(4℃)was used as the con-trol to determine the activity of tillering node and the content of carbohydrates.[Result]Under low temperature stress,the tillering node activity of Baiji No.1 was higher than that of Dongmu 70,and the two rye varieties sown on September 25 had significant differences under low temperature stress at-10,-20 and-30℃(P<0.05).The til-lering node vigor of rye sowed on September 15 th was higher than that sowed on September 25 th.Under the low temperature stress of-10℃and-20℃,there were significant differences between the two rye varieties and Baiji No.1 at-30℃(P<0.05).Under low temperature stress,the content of carbohydrates in Baiji No.1 was also higher than that in Dongmu 70 rye.Under low temperature stress,the sugar content of rye sown on September 15 was higher than that sown on September 25.Correlation analysis showed that the activity of rye tillering node under low temperature stress was positively correlated with sucrose,fructose and soluble sugar content,and negatively corre-lated with starch content under-30℃treatment.[Conclusion]The cold resistance of Baiji No.1 was stronger than that of Dongmu 70.The cold resistance of rye sown on September 15 was stronger than that on September 25.Soluble sugars such as sucrose and fructose were important cold-resistant protective substances of winter rye.关键词
冬黑麦/低温胁迫/分蘖节活力/糖类物质/播期/抗寒性Key words
rye/low temperature stress/tillering node activity/sugars/sowing period/cold resistance分类
农业科技引用本文复制引用
隋可,刘泽宇,张玉霞,王显国,张庆昕,王振国,崔凤娟..低温胁迫对不同播期两个冬黑麦品种抗寒性和糖类物质含量的影响[J].草原与草坪,2025,45(6):33-39,7.基金项目
国家牧草产业技术体系(CARS-34) （CARS-34）
国家谷子高粱产业技术体系(CARS-06) （CARS-06）
国家民委科尔沁沙地生态农业重点实验室开放基金项目(MDK2023095) （MDK2023095）
