辽宁农业科学Issue(2)：10-14,5.DOI:10.3969/j.issn.1002-1728.2016.02.003
低温胁迫对高粱种子萌发及出苗的影响分析
Effects of Low-temperature Stress on the Germination and Seedling-emergence of Sorghum Bicolor
摘要
Abstract
The germination rate and seedling-emergence rate of sorghum are influenced by the low-tempera-ture stress with different degree.Grain sorghum BTx623 and sweet sorghum Rio were used as experimental ma-terials.The experimental materials were treated with 2 ℃,4 ℃,6 ℃,8 ℃ and 10 ℃ for 2 d,4 d,6 d,8 d,10 d,12 d,14 d,16 d,18 d and 20 d,respectively.The rates of germination and seedling emergence are used to evaluate low-temperature resistance.The selection conditions for seed germination and seedling emer-gence were put forward to provide reference for screening low-temperature resistant materials.It is recommen-ded that treated with 8 ℃ for 8 ~10 d and 14 ~16 d to count seed germination vigor and germination rate at the early screening stage of seed germination period,and then gradually improve the selection pressure.If the rate of seedling emergence as a criterion,it is suggested that 4 ℃ or lower temperature treated for 14 ~16 d to count the seedling emergence rate.At the seed germination stage,the germination rate and seedling emer-gence rate should be comprehensively considered for screening and identifying low-temperature resistant mate-rials.关键词
高粱/低温胁迫/萌发率/出苗率Key words
Sorghum bicolor/Low-temperature stress/Germination Rate/Seedling-emergence Rate分类
农业科技引用本文复制引用
张丽霞,霍岩,张灵敏,王春语,丛玲..低温胁迫对高粱种子萌发及出苗的影响分析[J].辽宁农业科学,2016,(2):10-14,5.基金项目
国家现代农业产业技术体系项目（CARS-06-01-06），辽宁省科技攻关项目（2011208001），国家自然科学基金项目 （）
