抗坏血酸预处理阻止香蕉吸芽外植体褐变的研究初报  

A PRELIMINARY STUDY ON PREVENTING BROWN TURNING OF SUCKER EXPLANTS FROM BANANA BY ASCORBIC ACID PRE-TREATMENT

作　　者：何琼英[1] 张东方[1] 王润华[1] 

机构地区：[1]华南农业大学农学系,华南农业大学农业生物系

出　　处：《华南农业大学学报》1995年第3期79-82,共4页Journal of South China Agricultural University

摘　　要：研究了抗坏血酸预处理对防止香蕉吸芽外植体褐变的可能性及其作用方式。结果表明：用抗坏血酸处理吸芽，能减轻外植体褐变，提高芽丛诱导率。验证了抗坏血酸对香蕉吸芽褐变抑制作用是通过对将多元酚氧化酶作用下形成的醌类物质，重新还原为酚，因此是消耗性的。讨论了香蕉快繁中有关阻止褐变经验的生理基础。Possibility and mode of action of preventing brown turning in sucker explants fromBanana were studied.The result showed that ascorbic acid pre-treatment can preventexplant′s brown turning and improve the induced efficiency of plantlet.The resultsshowed that the action of preventing brown turning of the explants was the functionof quinones produced by polyphenol oxidase catalysis. The physiological basis of relat-ed production experiences in banana rapid multiplication was also discussed.

关 键 词：香蕉 抗坏血酸 外植体褐变 良种繁育 

分 类 号：S668.103.2[农业科学—果树学]