大麦与谷类科学2024，Vol.41Issue(3)：1-7,7.DOI:10.14069/j.cnki.32-1769/s.2024.03.001
PEG-6000模拟干旱胁迫下云麦77和云麦80的萌发特征和抗旱性评价
Germination Characteristics and Drought Resistance Evaluation of Yunmai 77 and Yunmai 80 Under Simulated Drought Stress with PEG-6000
摘要
Abstract
Winter and spring drought in Yunnan seriously affected the growth,development and yield of wheat. The study on germination characteristics and drought resistance evaluation of new wheat varieties has important guiding significance for the demonstration and promotion of new wheat varieties. Different concentrations of PEG-6000 solution were used to treat new wheat varieties Yunmai 77 (upland wheat) and Yunmai 80 (field wheat) under different cultivation modes in Yunnan Province. The daily relative germination percentage,germination rate,germination potential,germination delay,germination index,drought resistance index of seed germination and free proline content were tested,and the variance analysis was performed. The results showed that when PEG-6000 concentration was more than 6 g/L,Yunmai 80 could not germinate,Yunmai 77 could germinate,but the germination time was delayed. Different concentrations of PEG-6000 solution had significant inhibition difference on the daily relative germination rate,germination potential,germination delay,germination index and seed germination resistance index of the two wheat varieties. The germination rate,germination potential and germination index decreased with the increase of PEG-6000 concentration. The germination rate and germination index of Yunmai 77 were higher than those of Yunmai 80 under the stress of 2-8 g/L PEG-6000 solution. Under no PEG-6000 treatment,the free proline content of Yunmai 80 was significantly higher than that of Yunmai 77. Under the same PEG-6000 treatment (except 10 g/L),the free proline content of Yunmai 77 was higher than that of Yunmai 80. The method of simulating drought resistance to test the drought resistance of wheat varieties is effective. Yunmai 77 has strong drought resistance,and can be used as the main dryland wheat variety in Yunnan.关键词
小麦/PEG-6000/萌发/抗旱性Key words
Wheat/PEG-6000/Germination/Drought resistance分类
农业科技引用本文复制引用
程加省,乔祥梅,王志伟,王志龙,刘列,黄廷芝,黄格,于亚雄..PEG-6000模拟干旱胁迫下云麦77和云麦80的萌发特征和抗旱性评价[J].大麦与谷类科学,2024,41(3):1-7,7.基金项目
云南省麦类现代农业产业技术体系[云农办科(2019)243号] （2019）
云南省重大生物专项计划-生物种业与农产品精深加工专项(202102AE090014-4) （202102AE090014-4）
云南省技术创新人才培养项目(202205ad160033) （202205ad160033）
国家小麦产业技术体系昆明综合试验站(CARS-3-96). （CARS-3-96）
