14 research outputs found
Isolation of a germination stimulant for Striga hermonthica (Del) Benth from root culture of Menispermum dauricum DC
No full text试验研究了从山豆根(Menispermum dauricum DC.)组培根中提取、分离独脚金属杂草[Striga hermonthica(Del)Benth]发芽刺激物质,其提纯、分离过程是首先将发芽剌激物质吸附在XAD-4树脂表面后采用甲醇脱洗,通过乙酸乙脂:水分配提取,活性物质在Sephadex LH20开口型人工填充柱上进行柱层析,活性组分合并后进一步采用商业提供的C18 Sep-Pak(10g)柱进行柱层析,之后采用分取和分析高效液相色谱提纯、分离,每一步提纯过程中均采用Striga种子发芽实验鉴定活性物质的存在。高效液相色谱分析表明有3种活性物质,其中主要活性物质与Strigol有十分相似的色谱特性,最后经质谱鉴定为Strigol或Strigol类似物质,并首次报道Strigol是植物的代谢产物
Studies on the mode of action of asulam in bracken (Pteridium aquilinum L. Kuhn). III. Longterm control of field bracken.
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Influence of glumes, soil and environmental conditions on germination of Ischaemum afrum (J.F. Gmel.) Dandy seeds
No full textSpray retention, foliar penetration, translocation and selectivity of asulam in wild oats and flax
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