摘要
La3+具有调节细胞膜透性，抑制糖和色素外渗、促进根对磷的吸收、促进根的发育等生理功能，但对其在植物生长和激素水平上调节作用的研究尚未见报道。本文以墨兰根状茎为材料。
The rhizomes of Cymbidium sinense (Andr.) Willd. were incubated in the medium of 1/2 MS+NAA+BA+La+. La was highly effective on the regulation of the development and metabolism of rhizome, probably enhancing the activity of hormones. When the La+-treated stems were compared with the control, it was found that the growth rate was enhanced by 78 % increase in increment rate of fresh weight apparently resulting in better growth and having more branches; The photosynthesis rate and respiratory rate was 61 % and 9% higher respectively; Protein synthesis was promoted revealing much content of about 45 kD peptides; and in addition the development of shoots was faster.
基金
广东省自然科学基金
关键词
墨兰
根状茎
镧元素
生长
调节
Cymbidium sinense , Rhizome, Lanthanum, Photosynthesis rate, Respiration rate, Content of protein
