不同生长调节物质对益母草的生长调控及其表现效应

Growth regulation and behavior effect of Leonurus artemisia(Lour.) S.Y.Hu by different growth regulators

目的 :通过对童子益母草开展不同生长调节物质的田间处理 ,考评其株高、单株鲜重、地上部分鲜重、分蘖数和叶绿素含量等生物学性状。方法 :测定益母草株高、单株鲜重、地上部分鲜重、分蘖数和叶绿素含量。结果 :①赤霉素对益母草的生长 ,尤其株高 ,促进作用较其它处理显著 ;多效唑抑制了益母草地上部分生长。②除多效唑处理外 ,其它处理对提高益母草地上部分的产量都有一定的促进作用 ,其中以赤霉素表现最为明显。③不同生长调节物质处理都能促进益母草分蘖 ,并提高叶片内叶绿素含量。④赤霉素能促进莲座状矮化类型益母草的抽苔 ;细胞分裂素能促进分蘖体的生长 ,并加快分蘖体叶子的形态建成。结论 :采用赤霉素处理 ,或赤霉素和细胞分裂素的协同作用 ,能调控益母草的株型 ,并提高单位面积产量。

OBJECTIVE:Field investigation of applying different growth regulators to Leonurus artemisia were carried out to examine its plant height,fresh weight of single plant and above ground part,tiller number and chlorophyll content in its leaves.METHODS:The plant height,fresh weight of single plant and above ground part,tiller number and chlorophyll content in its leaves were determined.RESULTS:①For the influence to the growth of Leonurus artemisia,especilly to the plant height,Gibberellin is more obvious than the others;and the growth about above ground part of Leonurus artemisia is checked by MET.②Except MET,the others improve the output of above ground part of Leonurus artemisia.Gibberellin is the most prominent one among them.③Applying different growth regulators to Leonurus artemisia can accelerate its tiller and improve chlorophyll content in its leaves.④Gibberellin can accelerate lotiform dwarf kind of Leonurus artemisia to take out liver mosses.Cell Division Element can improve growth of tiller and accelerate the shape building of leaves.CONCLUSION:Using Gibberellin or co operate effect with Gibberellin and Cell Division Element can adjust the plant type of Leonurus artemisia and raise output per unit area.