摘要
【目的】研究混合盐碱胁迫对花生种子萌发及幼苗生长的影响,为盐碱地的有效利用与耐盐品种的培育提供依据。【方法】以花生品种花育25号为材料,人工模拟混合盐碱胁迫条件,测定花生种子发芽率、发芽势、发芽指数、活力指数、盐害率及花生幼苗的根长和茎长。【结果】(1)高浓度胁迫下,Cl^(-)和SO_(4)^(2-)组成的混合盐碱溶液对花生种子萌发产生强抑制效果;当混合盐碱溶液的pH值>10时,对花生种子初生幼苗生长产生强抑制效果;(2)不同浓度的混合盐碱胁迫对发芽率、发芽势、发芽指数、活力指数、盐害率、根长、茎长均产生了不同程度的影响,高浓度的混合盐碱会对花生种子萌发产生抑制作用;(3)花生对各处理的耐盐碱性从大到小依次为B>C>D>E>A。【结论】不同的混合盐碱成分及浓度对花生种子的影响不同,而种子萌发期是植物对盐碱胁迫最敏感的时期。
【Objective】To investigate thoroughly the effects of mixed salt alkali stress on peanut seed germination and seedling growth in the hope of improving the planting structure of saline alkali land in Xinjiang and increasing the peanut planting area.【Methods】This study used Huayu 25 as the experimental material and artificially simulated mixed salt alkali stress conditions to determine the germination rate,germination potential,germination index,vitality index,salt damage rate,and root and stem length of peanut seedlings,in order to provide a basis for the effective utilization of saline alkali land and the cultivation of salt tolerant varieties.【Results】(1)Under high concentration stress,the mixed saline alkali solution composed of Cl^(-)and SO_(4)^(2-)has a more severe inhibitory effect on peanut seed germination;When the pH of the mixed saline alkali solution was greater than 10,the inhibitory effect on the growth of peanut seed primary seedlings was severer;(2)Different concentrations of mixed salt alkali stress had varying degrees of impact on germination rate,germination potential,germination index,vitality index,salt damage rate,root length,and stem length.High concentrations of mixed salt alkali would have an inhibitory effect on peanut seed germination;(3)The salt and alkaline tolerance of peanuts to each treatment was B>C>D>E>A in descending order.【Conclusion】Different mixed salt alkali components and concentrations have different effects on peanut seeds,and the seed germination period is the most sensitive period for plants to salt alkali stress.
作者
张帆
陈晓露
王洁
侯献飞
贾东海
顾元国
苗昊翠
李强
ZHANG Fan;CHEN Xiaolu;WANG Jie;HOU Xianfei;JIA Donghai;GU Yuanguo;MIAO Haocui;LI Qiang(College of Biological Science and Technology,Yili Normal University,Yining Xinjiang 835000,China;Research Institute of Crop Germplasm Resources,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China;Institute of Economic Crops,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2024年第9期2168-2182,共15页
Xinjiang Agricultural Sciences
基金
新疆维吾尔自治区“天山英才”青年科技拔尖人才项目(2022TSYCCX0062)
新疆维吾尔自治区重大科技专项“油料作物种质资源收集与优异基因挖掘关键技术研究”(2022A03004-4)
国家花生产业技术体系“新疆综合试验站”(CARS-13)。
关键词
花生
混合盐碱胁迫
种子萌发
幼苗生长
耐盐性评价
peanuts
mixed salt alkali stress
seed germination
seedling growth
salt tolerance evaluation