油菜素内酯提高香蕉幼苗抗冷性的效应

doi:10.7525/j.issn.1673-5102.2008.02.014

植物研究 ›› 2008, Vol. 28 ›› Issue (2): 195-198.doi: 10.7525/j.issn.1673-5102.2008.02.014

油菜素内酯提高香蕉幼苗抗冷性的效应

刘德兵^1,2;魏军亚^1,2;李绍鹏¹;崔百明²;彭　明^2*

(1.华南热带农业大学园艺学院，儋州　571737) (2.中国热带农业科学院热带生物技术研究所，海口　571101)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-03-20 发布日期:2008-03-20
通讯作者: 彭　明
基金资助:

Effects of Brassinolid on Chilling-Resistance in Banana Seedlings

LIU De-Bing;WEI Jun-Ya;LI Shao-Peng;CUI Bai-Ming;PENG Ming*

(1.College of Horticulture, South China University of Tropical Agriculture,Danzhou　571737) (2.Chinese Academy of Tropical Agricultural Sciences,Haikou　571101)

Received:1900-01-01 Revised:1900-01-01 Online:2008-03-20 Published:2008-03-20
Contact: PENG Ming
Supported by:

摘要/Abstract

摘要： 冷胁迫条件下的香蕉幼苗分别经不同浓度的BR处理后，相对于对照来说，在一定的处理浓度范围内，可以明显的降低电解质外渗率，提高低温胁迫下香蕉幼苗叶片中SOD的活性，一定程度上提高了低温胁迫下香蕉幼苗叶片中可溶性蛋白的含量，减缓叶片中MDA的含量变化，可溶性糖含量明显的提高，减少叶片萎蔫面积和死亡率，同时，明显的减缓了叶片中叶绿素降解的速度。这些代谢产物的变化，对提高香蕉幼苗冷胁迫期间的抵抗能力起着非常关键和重要的作用。保护效果最好的浓度是：0.9 mg·L^-1。

关键词: 香蕉, 油菜素内酯（BR）, 抗冷性

Abstract: The banana seedlings were treated with brassinolid (BR) of different concentrations under the cold-stressed condition. Comparing to the control, the treatment with certain concentration may obvious reduce the electrolyte leakage rate, increase SOD activity, enhance the soluble protein content at a certain extent, slow down the MDA content change, distinctly enhance soluble sugar content, slow down the area of wither and mortalityrate as well as delay the chlorophyll degraded speed of the banana seedling leave. These changes of metabolite have played a key role and important function in enhancing cold-stressed period resistance of banana seedlings. The concentration with the best protected effect is 0.9 mg·L^-1.

Key words: banana(Musa paradisiaca L.), brassinolid(BR), chilling-resistance

中图分类号:

刘德兵;魏军亚;李绍鹏;崔百明;彭　明*. 油菜素内酯提高香蕉幼苗抗冷性的效应[J]. 植物研究, 2008, 28(2): 195-198.

LIU De-Bing;WEI Jun-Ya;LI Shao-Peng;CUI Bai-Ming;PENG Ming*. Effects of Brassinolid on Chilling-Resistance in Banana Seedlings[J]. Bulletin of Botanical Research, 2008, 28(2): 195-198.

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油菜素内酯提高香蕉幼苗抗冷性的效应

Effects of Brassinolid on Chilling-Resistance in Banana Seedlings

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