三峡库区野生红三叶苗期抗旱性灰色关联分析

Analysis of the grey incidence of wild Trifolium pratense drought resistance in the three gorges reservoir area

以三峡库区采集的9份野生红三叶和3份国内外品种为材料,在干旱胁迫下,测定其地上生物量、地下生物量和脯氨酸含量等10项指标,进行灰色关联度分析。结果表明,筛选出地下生物量、脯氨酸含量和叶绿素a含量3项可对红三叶抗旱性进行评价的指标;根据红三叶抗旱性评估模型综合评估值(φK)得出材料的抗旱性排序为:瑞德(Red)>CQ5>CQ9>多丽(Dory)>CQ2>CQ4>CQ7>CQ3>CQ1>巫溪>CQ8>CQ6。

Ten indexes were determined 3 varietie of comprehensi xes seq Tri f olium pr ve exaluation atens were e under studied for 9 wild accessions collecting from drought stress at the seedling stage. the three Screeding gorges reservoir area and identification indexes and by grey correlative degree analysis. The results showed that three inde including ground biomass, MDA content and chlorophyll a content were important in drought stress. The uence of drought resistance of 12 T. pratense from strong to weak was： Red〉CQ5〉CQ9〉 Dory〉CQ2〉CQ4〉CQ7〉CQ3〉CQ1〉 WuXi〉 CQ8〉CQ6.