种子2025，Vol.44Issue(12)：55-65,11.DOI:10.16590/j.cnki.1001-4705.2025.12.055
不同饲用小黑麦种子萌发期耐盐碱性的综合评价
Comprehensive Evaluation on Salt and Alkali Tolerance during Germination Period of Different Forage × Triticosecale Seeds
摘要
Abstract
To explore the effects of mixed salt-alkali stress on the germination characteristics of different for-age × Triticosecale seeds and to identify their salt-alkali tolerance,12 forage × Triticosecale varieties were used as materials,and 5 mixed concentration gradients composed of NaCl,Na2SO4 and NaHCO3(40,80,120,160 mmol/L and 200 mmol/L)were prepared,with distilled water as the control(ck),important indi-cators such as the germination rate,germination potential,embryo root and embryo bud length of forage × Triticosecale were determined,and a comprehensive evaluation was conducted by combining correlation analysis,principal component analysis,membership function method and cluster analysis.The results showed that with the increase of the mixed salt-alkali concentration,the germination rate,germination potential,ger-mination index and vitality index of each variety of forage × Triticosecale all showed a downward trend,and the salt-alkali stress response during the germination period of different forage × Triticosecale varieties showed different changing trends.Principal component analysis showed that fresh weight and germination index were the key indicators for evaluating salt-alkali tolerance during the germination period.Membership function analysis showed that the membership function value D of Qingshimai No.8,Jishimai No.3 and Qingshimai No.3 was significantly higher than that of other varieties.Mixed salt-alkali stress significantly inhibited the germination of forage × Triticosecale seeds,and there were significant differences in salt-alkali tolerance among varieties.The salt-alkali tolerance of Qingshimai No.8 was relatively strong.When the ger-mination rate dropped to 50％of the control,the semi-lethal concentration reached 165.7 mmol/L,and it showed good germination characteristics under mixed salt stress.关键词
饲用小黑麦/盐碱胁迫/种子萌发/隶属函数/聚类分析/综合评价Key words
forage × Triticosecale/saline-alkali stress/seed germination/membership function/cluster analysis/comprehensive evaluation分类
农业科技引用本文复制引用
薛风娟,加羊吉,张海英,孙浩,蒲小剑,赵媛媛,王伟,徐成体..不同饲用小黑麦种子萌发期耐盐碱性的综合评价[J].种子,2025,44(12):55-65,11.基金项目
青海省重大科技专项(2023-NK-A3) （2023-NK-A3）
