不同种源地乌拉尔甘草发芽期抗旱性鉴定

在PEG6000模拟干旱胁迫条件下,研究不同种源地的6份乌拉尔甘草种子发芽期与抗旱性相关的形态和生理指标的差异,并通过隶属函数法、系统聚类分析结合反复干旱胁迫对不同来源的材料进行抗旱性的综合评价。结果表明来源于内蒙古中部地区的1号、2号甘草的抗旱性较强,其次为内蒙古东部赤峰的4号甘草以及来自新疆地区的5号和6号甘草,赤峰来源的3号材料的抗旱性最弱。从隶属函数以及聚类分析的结果来看,对于甘草种子发芽期抗旱性鉴定宜选用20%的PEG6000。

Drought Resistance Evaluation of Glycyrrhiza uralensis Fisch. from Different Regions in Germination Stage

The drought resistance of six Glycyrrhiza uralensis Fisch.accessions from different regions was studied under simulated drought stress with PEG6000.Through measurating morphological and physiological indexes related to drought resistance,and evaluating integrative with subordinate function and system cluster analysis,we could conclude that No.1 and No.2 accessions from central region of Inner Mongolia had higher drought resistance,then followed by No.4 from eastern region of Inner Mongolia as well as No.5 and No.6 from Xinjiang.The resistance of No.3 was the lowest.Through subordinate function and system cluster analysis,20% PEG6000 was suitable for evaluation of drought resistance of licorice in germination stage.