耐草甘膦大豆种质资源筛选的研究

通过田间试验结合室内生物测定的方法,对不同大豆品种(系)进行了耐草甘膦特性的筛选,以期获得耐草甘膦大豆育种的新种质资源。结果表明,在草甘膦常规剂量下,不同大豆品种(系)对草甘膦耐性程度有着较大差异。褐皮豆和绥无腥豆1号耐性程度较强;DS系列大豆对草甘膦的耐性明显高于其他品系。通过室内生物测定对耐性程度较高的品种(系)进行进一步研究发现,DS品系等4个品系的耐性程度较高,其耐性倍数分别为4.23、3.82、2.93、2.59和2.48。室内考种数据表明,草甘膦虽然对耐性品系的株高有不同程度的抑制;但耐性品系可以正常的成熟结实,在单株荚数、百粒重等重要指标上具有可利用价值。

Screening of natural glyphosate-tolerant soybean germplasm resources

The article screened different strains of soybean by the method of indoor biological assay and field trial to acquire new germplasm resource of glyphosate-tolerant soybean.The results showed that different soybean strains had different glyphosate tolerance.Hepidou and Suiwuxingdou1 had a higher tolerance of glyphosate;DS series soybean were more tolerant than the other strains.Through the further study of the glyphosate-tolerant soybean by the method of indor biological assay,four soybean DS series had a higher tolerance,and the tolerance multiples were 4.23,3.82,2.93,2.59,and 2.48,respectively.The data of indoor test species indicated that although glyphosate had different degrees of inhibition on plant height,but the glyphosate-tolerant soybean strain could bear fruit normaly and had available value on several important indices such as pods per plant number and 100-grain weight.