摘要
利用NaCl和Na2SO4复盐溶液胁迫处理36个燕麦品种,采用培养皿纸上发芽法,进行种子萌发和幼苗的耐盐能力鉴定,通过分析盐胁迫对不同燕麦种子萌发及幼苗的影响,为燕麦品种耐盐性筛选、盐碱地燕麦栽培和耐盐育种提供理论参考。结果表明:盐分抑制种子的萌发和幼苗生长,低盐浓度(0.4%)适宜各类燕麦生长,对较耐盐的品种有促进萌发、生长的作用,盐浓度1.2%是鉴定燕麦耐盐性的适宜盐浓度;36个品种耐盐性差异较大,可划分为耐盐型、中度耐盐型、不耐盐型3类;燕麦不同品种及不同类型种子萌发的盐浓度范围达极显著差异,各耐盐指标对于燕麦耐盐性的体现存在一定的差异,发芽率、发芽指数、简易活力指数和单株干质量是主要的耐盐指标。
An observation was made on the seed germination and seedling growth of 36 oat （Avena fatua L. ） varieties under NaCl-Na2SO4 stress in Petri dish, aimed to provide theoretical reference for selecting salt-tolerant oat varieties, cultivating oat on saline-alkali soil, and breeding salt-tolerant species. Salt stress inhibited the seed germination and seedling growth. Low salt concentration （0. 4% ） favored the growth of test oat cuhivars, and promoted the germination and seedling growth of salt-tolerant varieties. Salt concentration 1.2% was the appropriate salt concentration for the identification of oat salt-tolerance. The test 36 oat varieties had greater differences in their salt-tolerance, and could be divided into three types, i. e. , tolerant, moderate tolerant, and non-tolerant. Different oat varieties and types at their seed germination stage had different salt-tolerant concentration range, and the salt-tolerant indices had definite differences in reflecting the salt-tolerance of oat, among which, germination rate, germination index, simple vigor index, and individual dry mass were more available.
出处
《生态学杂志》
CAS
CSCD
北大核心
2009年第10期1960-1965,共6页
Chinese Journal of Ecology
基金
国家自然科学基金项目(30660084)
内蒙古自然科学基金重大项目(200607010301)
公益性行业(农业)科研专项经费资助项目(NYHYZX07-009-13)
关键词
燕麦
种子
幼苗
耐盐性
Avena fatua L.
seed
seedling
salt-tolerance.
