十六个水稻品种(系)对褐飞虱的抗虫性评价

本文通过苗期抗性鉴定、田间抗虫性鉴定、稻田节肢动物功能团优势度比较及产量测定的方法来评价16个水稻品种(系)对褐飞虱Nilaparvata lugens(Stl)的抗性。结果表明,有12个品种(系)对褐飞虱表现为抗级,2个品系表现为中抗。这14个抗虫-中抗的品种(系)在成株期也表现一定的抗虫性,且与对照TN1之间差异显著。本试验条件下,广占63-3S/华恢15、广两优106、Y58S/华15、广两优476、广占63-4S/华恢15这5个品种(系)不仅抗虫性好,而且产量也较高,分别比TN1和主栽品种扬两优6号高63.49%～66.57%和3.47%～11.57%,具有广泛的开发应用前景。

Resistance to brown planthopper(Nilaparvata lugens) of 16 rice varieties(lines)

The resistance of 16 rice varieties（lines） to the brown planthopper（BPH）,Nilaparvata lugens（Stl） was evaluated using a modified bulk seedling test,evaluation of the resistance of adult plants in the field,assessment of guild dominance in the arthropod community and rice yield.The results indicate that 12 varieties（lines） were highly resistant to BPH and 2 lines were moderately resistant to BPH at the seedling stage.The resistance of 14 varieties significantly improved at the adult stage.Besides improved resistance,the yields of the varieties Guangzhang63-3S/Huahui15,Guangliangyou106,Y58S/Hua15,Guangliangyou476 and Guangzhan63-4S/Huahui15 were 3.47% to 11.57% higher than that of Yangliangyou6hao（a leading variety in Hubei）.The former two varieties have great potential in further developing rice production.