苏打盐碱胁迫对甜高粱种子萌发的影响及品种耐性综合评价

Effect of Saline-sodic Stress on the Sweet Sorghum Germination and Evaluation of Salt Tolerance on the Different Varieties

将NaHCO3和Na2CO3按5∶1混合,在不同盐碱浓度处理下对7个不同甜高粱品种的发芽势、发芽率、发芽指数、相对活力指数、平均根长、平均发芽率和盐害率进行比较研究,并采用隶属函数法对各品种耐性进行评价。结果表明:7个甜高粱种子耐盐碱性由强到弱的综合排序为:MN3739>M-81 E>贝利>Rio>ES725>3222>雷伊。

The 7 varieties of sweet sorghum were treated with different concentration of alkali stress （ molar ratio of NaHCO3： Na2CO3 = 5：1 ）. The germination rate, germination percentage ,germination index, relative-vigor index, average-root length, average-germination percentage and salt toxicity rate were compared between 7 kinds of varieties, and the tolerance of sweet sorghum was assessed with the method of subordinate function val- ues analysis. The results showed that the 7-varieties of sweet sorghum were ordered in sequence from the strong to weak ： MN 3739 〉 M-81 E 〉 Berry 〉 Rio 〉 ES 725 〉 3222 〉 Wray.