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采用人工气候箱结合田间小区试验 ,从我国部分水稻种质资源中筛选获得了 2份具有化感潜力的水稻品种(系 ) ,其中我国台湾品种蚁公包幼苗对无芒稗根长影响因子RRL为 0 .4 3,其叶片水浸提液对无芒稗和莴苣根长抑制率分别达到 4 5 %和 85 % ,在田间对无芒稗茎数和植株鲜质量的控制效果分别为 2 2 .0 %和 2 6 .1 %。云南品种地谷幼苗对无芒稗的植株高度影响因子RSH和植株干质量影响因子RPDW分别为 0 .6 2和 0 .5 8,叶片水浸提液对无芒稗和莴苣根长抑制率分别达到 5 3%和 6 5 % ,在田间对无芒稗茎数和植株鲜质量的控制效果分别达到 5 1 .5 %和 4 6 .1 %。蚁公包对莴苣的控制效果和地谷对无芒稗的控制效果均显著高于美国化感潜力品种PI31 2 777。蚁公包和地谷是我国宝贵的化感潜力品种资源
Two artificial rice varieties (lines) with allelopathic potential were selected from some rice germplasm resources in China by artificial climate chamber combined with field plot test. The effects of RRL Was 0.4. The inhibitory rates of aqueous extract of leaves on the root length of barnyardgrass and lettuce were 45% and 85%, respectively. The control effects on the number of stems and plant fresh weight of barnyardgrass were 22 .0% and 26.1%. The RSH of plant height and the RPDW of plant dry weight of seedlings of Yunnan variety to valley were 0.62 and 0.58, respectively. The root length inhibition rate of aqueous extracts from leaves of F. barbadense and lettuce were respectively Reaching 53.3% and 65.5%, respectively. The control effects on the stem number and plant fresh weight of barnyardgrass in the field reached 51.5% and 46.1% respectively. The control effect of ant corps on lettuce and the effect of earthworm on barnyardgrass were significantly higher than that of the PI31 2 777 allelopathic potential species in the United States. Ants Gongbao and Valley are our precious potential varieties of allelochemical resources