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首页> 外文期刊>International Journal of Basic and Applied Sciences >Allelopathic effects of thuja orientalis L. and melia azedarch L. on seed germination of penisitum americanum L
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Allelopathic effects of thuja orientalis L. and melia azedarch L. on seed germination of penisitum americanum L

机译：东方金钟柏和美利亚金盏花对美国对虾种子萌发的化感作用

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摘要

Aqueous extract of leaves, bark and seeds of Meliaazedarach.L and Thujaorientalis L. were assayed at 1, 5 and 10g/L concentration with different time period to check their effect on seed germination, fresh and dry weight and seedling growth of Pennesitiumamericanum L. Result revealed that aqueous extracts of both plants at all concentration and time period had significantly inhibited seed germination ofP.ammericanum L. when compared with control. The inhibitory effect increases with increasing concentration of extracts and time period. The bark extract of all concentration of T.orientalis in 24hr and 48hrs show stimulation in seedling growth while other parts and extracts of all parts of M.azedarachin all concentration and time period show inhibition in all parameters. The order of inhibition when compared different parts of M.azedarch was seeds >bark > leaves while that of T.orientalis was leaves > bark >seeds. Hence it is concluded that aqueous extract of these plant contain water soluble allelochemicals which inhibit the seed germination and seedling growth of P. americanum L. It is suggested that these chemicals may be used as herbicides.
机译：以1,5和10g / L的浓度在不同的时间段测定了Meliaazedarach.L和Thujaorientalis L.的叶，树皮和种子的水提物，以检查它们对Pennesitiumamericanum L.种子发芽，鲜重和干重以及幼苗生长的影响。结果表明，与对照相比，两种植物在不同浓度和时间段的水提物均能显着抑制美洲紫苏的种子萌发。抑制作用随提取物浓度和时间的增加而增加。在24小时和48小时内，所有浓度的东方红的树皮提取物均显示出对幼苗生长的刺激，而氮杂达拉陈的所有部分的其他部分和提取物，所有浓度和时间段的所有参数均受到抑制。相比之下，金缕梅不同部位的抑制顺序为种子>树皮>叶片，而东方三叶草的抑制顺序为叶片>树皮>种子。因此可以得出结论，这些植物的水提取物含有水溶性的化感物质，这些化感物质可抑制美洲疫霉的种子发芽和幼苗生长。建议将这些化学物质用作除草剂。

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