新疆农业科学2017，Vol.54Issue(10)：1813-1821,9.DOI:10.6048/j.issn.1001-4330.2017.10.006
不同成熟度和老化时间对春小麦种子萌发及幼苗生长特性的影响
Influence of Different Maturity and Aging Times on Seed Germination and Seedling Growth of Spring Wheat
摘要
Abstract
[Objective] The aim of this study is to determine the dynamic changes of seed vigor of spring wheat 31 with different maturity in the process of storage,which was the main cultivated varieties of Xinjiang spring wheat.[Method] Under the condition of 100％ relative humidity and 45℃,the seeds,which were harvested for 15 d,25 d and 35 d respectively,treated with artificial accelerated aging and the temperature of germination test,the processing time was respectively 0,2,4,6 and 8 d.The physical indexes were measured with the three maturity seed before gemination,such as length,width,thickness and weight,the seed vigor index were measured in the process of germinating,including the germination rate,germination potential,germination index,vigor index,seedling length,root length,seedling fresh weight and dry weight,and then the influence of different maturity and aging time on seed vigor of spring wheat was analyzed.[Result]The results showed that there was significant difference in grain length with different maturity and the difference of 1000 grain weight and grain moisture content was extremely significant;At the same maturity,when the aging time prolonged,the relative vigor indexes of seeds showed the trend of decreasing at fiist and then decreasing sharply.The inflection point appeared in the aging 4 d,and the difference reached a significant level between the treatments.The difference of the above vigor indexes in maturity reached a very significant level and the performance was 35 d after flowering ＞ 25 d ＞ 15 d.The stepwise regression analysis method was used to establish the equation between growth index and seed vigor,the equation of which had high goodness of fit.The value of R2 was more than 0.989.[Conclusion] Artificial aging can be used to simulate the variation of seed storage in the natural state,and the maturity and aging time affect the seed vigor,the results indicate that the fresh weight and dry weight of seedling can be used as the index to test the seed vigor.关键词
春小麦/成熟度/人工老化/物理指标/种子活力Key words
spring wheat/maturity/artificial aging/physical index/seed vigor分类
农业科技引用本文复制引用
冯魁,石书兵,李琼,贾永红,王美,田新年,张金汕,梁玉超,迪里夏提·尔肯,刘俊..不同成熟度和老化时间对春小麦种子萌发及幼苗生长特性的影响[J].新疆农业科学,2017,54(10):1813-1821,9.基金项目
农业部公益性行业科研专项“主要农作物高活力种子生产关键技术研究与示范”(201303002)Special Fund of Public Welfare Industry Agricultural Research of Ministry of Agriculture,China" Research and Demonstration of Key Technologies of High-activity Seeds for Main Crops" (201303002) （201303002）
