野生稻和非洲栽培稻抗稗草种质资源筛选和评价  

Evaluation and Screening of Resistance to Barnyardgrass in Germplasm of Wild Rice (Oryza sativa) and African Cultivar

作　　者：张付斗[1] 郭怡卿[1] 余柳青[2] 陶大云[3] 

机构地区：[1]云南省农业科学院植物保护研究所,云南昆明650205 [2]中国水稻研究所,浙江杭州310064 [3]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《作物学报》2004年第11期1140-1144,共5页Acta Agronomica Sinica

基　　金：云南省自然科学基金资助项目 ( 2 0 0 0C0 0 94M);国家自然科学基金资助项目 ( 3 0 1 70 6 2 0 )。

摘　　要：以盆栽试验对 2 0份野生稻和 5份非洲栽培稻材料的稗草出苗率、距离稻株不同范围播种的稗草株高和干重的抑制效果进行评价 ,并通过聚类分析和方差分析 ,将其划分为 6类。再以稻叶水提液培养稗草 ,依其发芽抑制率、芽长抑制率、根长抑制率和发芽指数 ,再次聚类并划分为 5类。盆栽和浸提液试验中效果均好的 3份野生稻S3 7、S6 8、S72和 1份非洲栽培稻Y1 1 0 0 2确定为具有化感作用潜力的资源 ;盆栽试验效果好 ,但浸提液生物活性差的 2份 (S1 1 3、Y1 1 0 0 4 )确定为竞争作用强的资源 ;盆栽和水提液试验均表现较差的 5份野生稻材料 (S4 3、S4 7、S4 0、S73、S1 1 1 )和 2份非洲栽培稻(Y1 1 0 0 5、Y1 1 0 0 1 )为非抗性材料。The resistance of 20 wild rice accessions(Oryza sativa) and 5 African cultivars to barnyardgrass (E crusgalli) was studied in pot experiment According to the effect of germination percentage of barnyardgrasses, and its plant height and dry weight of plant at different distance with rice seedlings, there were 6 types of wild rice clustered by means of cluster analysis and variance analysis In bioassay the allelopathic effect of wild rice extracted solution from rice leaf on barnyardgrasses germination, the length of bud and root and so on were measured, based on the data,25 accessions of germplasm were into 5 types The results showed that 3 wild rice accessions, S37, S46, S72,and 1 African cultivar,Y11002 were defined as the allelopathic potential germplasm, they caused significantly resistant effect in pot experiment and bioassay experiment; S113 and Y11002 were defined as strong competitive germplasm showing good effect in pot experiment, but low inhibition in bioassay experiment 5 wild rice accessions, S43, S47, S40, S73, S111, and 2 African cultivars Y11005, Y11001 showed the least effect both in pot experiment and bioassay experiment, were defined as non resistance rice

关 键 词：野生稻 稗草 抗性 评价 

分 类 号：S511.9[农业科学—作物学]