Influences of 5-ALA Application on Winter Oilseed Rape (Brassica napus L.) Growth before Winter  

5-氨基乙酰丙酸对冬油菜(Brassica napus L.)冬前生长的影响(摘要)(英文)

作　　者：张树杰[1] 李玲[1] 李光明[1] 张春雷[1] 

机构地区：[1]中国农业科学院油料作物研究所农业部油料作物生物学重点开放实验室农业部作物生理生态与栽培重点开放实验室,湖北武汉430062

出　　处：《Agricultural Science & Technology》2011年第3期324-329,共6页农业科学与技术（英文版）

基　　金：Supported by the Special Funds for Public Welfare Industry (Agriculture) Study of China (200903003 );the Subjects of Special Funds of Public Welfare Institutes of China (1610172011016)~~

摘　　要：[Objective] The aim of this paper is to investigate the influences of exogenous 5-aminolevulinic acid （5-aLA） application on the growth and mechanism of winter oilseed rape （Brassica napus L.） before winter. [Method] For this purpose a split-plot experimental design with four treatments of seed soaking with 0,25,50 and 75 mg/L ALA solution （CK,A1,A2 and A3） was carried out from October 2009 to January 2010 in order to observe the influences upon the growth and relevant physiological indexes of Zhongshuang 9. [Result] Seed soaking with ALA solution significantly promotes the growth of double-9 before winter,which is probably due to the fact that ALA application enhances its photosynthesis,absorption of nutrients,and its anti-oxidation abilities. The research also finds that ALA treatment notably increases its photosynthetic pigment contents,root activities,leaf nitrate reductase activities,soluble sugar contents,antioxidase activities,and significantly decreases malondialdehyde（MDA） content. [Conclusion] These results indicate that seed soaking with 50 mg/L ALA solution might have a potential application in increasing the productivity of winter oilseed rape in agricultural management.[目的]探讨外源5-氨基乙酰丙酸(ALA)对冬油菜冬前生长的影响及其机理。[方法]通过田间试验研究了0、25、50和75mg/LALA溶液浸种(CK、A1、A2和A3)对冬油菜(Brassica napus L.)中双9号冬前生长及相关生理指标的影响。[结果]ALA溶液浸种显著促进了中双9号冬前生长,可能与其提高植物光合作用,促进养分吸收,提高抗氧化胁迫能力有关。该研究还发现,ALA处理显著提高了中双9号光合色素含量、根系活力、叶片硝酸还原酶活性、可溶性糖含量及抗氧化酶活性,降低了丙二醛含量。[结论]50mg/LALA浸种在提高冬油菜生产能力方面具有潜在的应用前景。

关 键 词：Antioxidase MDA Photosynthetic pigments Root activity Soluble sugar 

分 类 号：S565.4[农业科学—作物学]