小麦品种资源耐盐性鉴定

按照农业部行业标准NY/PZT001-2002,对882份小麦品种资源进行耐盐性初步鉴定,筛选出芽期耐盐性为一级的品种328份,苗期和芽期都达到中度耐盐的品种43份。这些品种中很多既具有中度或中度以上耐盐性且具有高产优质等优异特性,如小偃22、新曙光1号等,为小麦耐盐育种提供重要信息。相关分析表明,不同耐盐级别的小麦品种其芽期和苗期耐盐性并没有一致的相关关系,二者并没有可比性,在耐盐种质筛选过程中,都有其本身的意义。

Evaluation for Salt Tolerance of Wheat Cultivars

Based on the industry standard NY/PZT001-2002 of Ministry of Agriculture,882 wheat varieties were evaluated for salt tolerance at the germination stage and the seedling stage.Among varieties tested,328 wheat cultivars with salt tolerance grade 1 were identified at the germination stage,and 43 cultivars were medium salt tolerance at both the germination stage and the seedling stage.Besides the slat tolerance,some varieties,such as Xiaoyan22,Xinshuguang 1 etc.,were high yield and high quality.The excellent salt tolerance germplasm screened in this study provides the geneticmaterials for wheat breeding to improve salt tolerance.Correlation analysis of wheat varieties with salt tolerance grade 1 and 2 at the germination stage showed that significant negative correlation existed between the germination stage and the seedling stage for salt tolerance,while no correlation existed at both stages for wheat varieties with salt tolerance grade 3,4 and 5,indicating that evaluation of the wheat salt tolerance at the germination stage had the same significance as that at the seedling stage in screening of wheat germplasm with salt tolerance.