江西农业学报2023，Vol.35Issue(10)：39-45,7.DOI:10.19386/j.cnki.jxnyxb.2023.10.007
盐碱胁迫对闽南饲用(印度)豇豆种子萌发及幼苗生长的影响
Effects of Salt and Alkali Stress on Seed Germination and Seedling Growth of Vigna unguiculata'Minnan'
摘要
Abstract
The effects of saline-alkali stress on seed germination and seedling growth of Vigna unguiculata'Minnan'were studied by Na2SO4,NaCl and NaHCO3 solutions with concentrations of 0(CK),0.4%,0.8%,1.2%,1.6%,2.0%and 2.4%.The germination rate,germination index and average germination time of Vigna unguiculata'Minnan'.were analyzed,as well as the changes of vigor index,radicle length and germ length of Vigna unguiculata'Minnan'.The results showed that the seed germination and seedling growth indexes under Na2SO4 and NaCl treatments decreased with the increase of salt solution concentration.Compared with CK,there was no significant difference in germination rate,germination potential and germination index when the concentration of Na2SO4 and NaCl solution was 0.4%,and there was significant difference in seed germination and seedling growth index when the concentration of salt solution was 0.80%～2.4%.The germination rate,germination potential,germination index,vigor index,radicle and germ length of Vigna unguiculata'Minnan'under NaHCO3 treatment increased first and then decreased with the increase of alkali solution concentration.When the concentration of NaHCO3 was 0.4%,the vigor index and the length of radicle and germ were significantly different from those of the control.According to the significant correlation between salt concentration and germination rate,the regression linear equation between them was established.The suitable salt concentrations of Na2SO4,NaCl and NaHCO3 for Vigna unguiculata'Minnan'were 0.79%,0.68%and 0.61%,the semi-lethal concentrations were 1.38%,1.23%and 1.28%,and the limit concentrations were 2.32%,2.12%and 2.35%,respectively.关键词
盐碱胁迫/种子萌发/发芽率/发芽指数/幼苗生长/豇豆Key words
Saline-alkali stress/Seed germination/Germination rate/Germination index/Seedling growth/Vigna unguiculata分类
农业科技引用本文复制引用
李春燕,陈恩,罗旭辉,陈志彤,应朝阳..盐碱胁迫对闽南饲用(印度)豇豆种子萌发及幼苗生长的影响[J].江西农业学报,2023,35(10):39-45,7.基金项目
5511协同创新工程(XTCXGC2021019) （XTCXGC2021019）
福建省公益类科研院所专项(2023R1019004). （2023R1019004）
