作物研究2017，Vol.31Issue(6)：659-663,5.DOI:10.16848/j.cnki.issn.1001-5280.2017.06.26
镉胁迫对不同水稻品种种子萌发和幼苗生长的影响
Effects of Cadmium Stress on Seed Germination and Growth Characteristic of Different Rice Cultivars
摘要
Abstract
In order to study the resistance differences of different rice cultivars to cadmium stress,fifty-two rice cultivars (strains) with different generic back ground were used to analyze the effects of 4 different cadmium concentration (0,0.5,1.0,2.0 mmol/L) on seed germination rate,germination energy germination index,vigor index,germ length,radicle length,germ fresh weight and bud dry weight of all the cultivars.The results showed that:(1) Cadmium stress inhibited seed germination and seedling growth,and the inhibition was increased as the increasing of cadmium concentration.(2)The radicle growth of rice seed was in habited more serious than that of the bud sat different cadmium concentrations.(3)There was highly significant correlation among indexes of all the rice cultivars under cadmium stress.(4)There was difference in the in hibitory degree of all the indexes due to cadmium stress,the vigor index and radicle length were in habited more than that of germination energy and germination rate.(5) There was significant difference in the resistances to cadmium stress among different rice cultivars.According to the results of cluster analysis about the relative values of each trait during germination at cadmium stress,the fifty-two rice cultivars were classified into three types:sensitive,intermediate,tolerant.关键词
水稻/镉胁迫/品种/种子/萌发Key words
rice/cadmium stress/cultivar/seed/germination分类
农业科技引用本文复制引用
杨明,陈璐,徐庆国,孙亚莉..镉胁迫对不同水稻品种种子萌发和幼苗生长的影响[J].作物研究,2017,31(6):659-663,5.基金项目
湖南农业大学大学生创新性项目(XCX16134) （XCX16134）
湖南省科学技术厅重点研发计划项目(2015NK3013). （2015NK3013）
