抗寒多年生麦草新种质颖壳对种子萌发的影响  

Effects of Glume Shell on Seed Germination for New Germplasm of Cold-tolerance Perennial Wheatgrass

作　　者：刘晓强 蒋勃 李紫琪 邢骞予 金慧 吴玉娥[2] 张举梅[2] 赵海滨[2] 李新玲[1] 张延明[1] Liu Xiaoqiang;Jiang Bo;Li Ziqi;Xing Qianyu;Jin Hui;Wu Yu’e;Zhang Jumei;Zhao Haibin;Li Xinling;Zhang Yanming(Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province,College of Life Science and Technology,Harbin Normal University,Harbin,150025;Institute of Pratacultural Science,Heilongjiang Academy of Agricultural Sciences,Harbin,150086)

机构地区：[1]哈尔滨师范大学生命科学与技术学院黑龙江省分子细胞遗传与遗传育种重点实验室,哈尔滨150025 [2]黑龙江省农业科学院草业研究所,哈尔滨150086

出　　处：《分子植物育种》2022年第10期3475-3480,共6页Molecular Plant Breeding

基　　金：国家重点研发计划项目(2016YFE0110400);国家科技重大专项和重点研发项目省级资助项目(GX18B009);黑龙江省自然科学基金项目(C201435);哈尔滨市国际科技合作基地项目“一带一路”框架下中国-独联体-中东欧国家农业科技合作联合实验室建设(2016AE6AE001);哈尔滨师范大学硕士研究生创新项目(HSDSSCX2019-16);黑龙江省大学生创新创业训练计划项目(2020010231076)共同资助。

摘　　要：为探讨抗寒多年生麦草新种质颖壳对种子萌发能力的影响,本研究采用培养皿萌发和田间直播出苗观察两种方法,分析种子在去掉全部颖壳、保留全部颖壳、去掉胚芽部分颖壳、保留胚芽部分颖壳4种不同处理条件下的萌发情况。结果表明,培养皿萌发条件下,带壳萌发的种子萌发率、发芽指数、种子活力均显著高于去壳条件。带壳萌发条件下种子发芽率平均为83.84%,为去壳条件下的2.4倍(34.30%);发芽势平均为77.98%,为去壳条件的2.8倍(27.88%);发芽指数平均为21.56,是去壳条件下的2.6倍(8.12);种子活力指数平均为78.18,是去壳条件下的5.9倍(13.10)。田间直播结果表明,相比于去壳种子,带壳的种子出苗率及成苗率均明显提高,带壳种子平均出苗率为去壳种子的5.7倍。本研究可为提高抗寒多年生麦草新种质种子的萌发和利用效率提供科学依据。To explore the effect of glume shell on seed germination of cold-tolerence perennial wheatgrass,two conditions of seed germination were used with Petri dishes and field sowing.The germination of the seeds under the four different treatments was carried out,including removing all shells,retaining all shells,removing part of germ shells,and retaining part of germ shells.The results showed that the seed germination rate,germination index and seed vigor under shell seed germination were significantly higher than shell removal seeds in Petri dish.The average seed germination rate was 83.84%,which was 2.4 times(34.30%)for shell removal seeds.The average germination potential was 77.98%,which was 2.8 times(27.88%)for shell removal seeds.The average germination index was 21.56,which was 2.6 times(8.12)for shell removal seeds.The average seed vigor was 78.18,which was5.9 times(13.10)for shelling seed.Furthermore,the results of field direct sowing showed that the germination and seedling rate of shell seeds were significantly higher than shell removal seeds.The average seedling rate of shell seeds was 5.7 times for shell removal seeds.The research can provide a scientific basis for improving the utilization and germination efficiency on new germplasm of cold-hardy perennial wheatgrass.

关 键 词：多年生麦草 种子 颖壳 发芽率 

分 类 号：S543.9[农业科学—作物学]