摘要
以8个玉米种质为材料,采用不同浓度的PEG-6000浓度(ck、5%、10%、15%、20%)模拟干旱,研究干旱对玉米种子萌发的影响。结果表明,随着PEG浓度的升高,干旱程度越高,发芽率越低,苗长、主根长、不定根数越少;根冠比缓慢升高。抗旱性好的品种发芽率、主根长、苗长等指标也相对较高。8个品种中,P 16-R和P 287的种子耐旱性较强。
In this paper,8 maize germplasms were used to investigate the effects of drought on maize seed germination under simulated drought at different concentrations of PEG-6000(ck,5%,10%,15%,20%).The results showed that there were higher the drought degree,lower germination rate,lesser seedling length,main root length,adventitious root with the increase of PEG concentration and the root-cap ratio rose slowly.The characteristics of germination rate,main root length and seedling length in the varieties with good drought resistance were also relatively high.Among the 8 cultivars studied in this study,the seeds of‘P 16-R’and‘P 287’had strong drought tolerance.
作者
赵璞
温之雨
董文琦
田玉
刘京宝
马春红
ZHAO Pu;WEN Zhiyu;DONG Wenqi;TIAN Yu;LIU Jingbao;MA Chunhong(Institute of Genetic Physiology,Hebei Academy of Agriculture and Forestry Science/Hebei Plant Transgenic Center,Shijiazhuang 050051,China;Hebei Academy of Agriculture and Forestry Science,Shijiazhuang 050031,China;Cereal Crops Institute,He’nan Academy of Agricultural Sciences,Zhengzhou 450002,China)
出处
《种子》
北大核心
2020年第10期48-52,共5页
Seed
基金
国家重点研发计划专项(2017YFD0300407)
河北省农林科学院创新工程项目(C20C1001)
科技部对外援助项目共同资助。
关键词
玉米
干旱
种子萌发
corn
drought
seed germination
