马铃薯蕾花果脱落与内源激素和光照的关系  

RELATION BETWEEN POTATO FLORAL BUD, FLOWER AND BERRY ABSCISSION AND ENDOGENOUS HORMONE AND LIGHT

作　　者：门福义[1] 王俊平[1] 宋伯符[2] 梁文胜 王官茂 蒙美莲[1] 郭晓燕[1] 

机构地区：[1]内蒙古农业大学,呼和浩特市010018 [2]中国农业科学院 [3]内蒙古正丰马铃薯种业公司

出　　处：《中国马铃薯》2000年第4期198-201,共4页Chinese Potato Journal

摘　　要：以乌Ｈ_４比的母本０８１和父本ＮＳ４０－３７为材料，通过田间和室内试验，对马铃薯蕾花果脱落过程中内源激素变化进行研究，阐明了内源激素的变化规律及ＩＡＡ、ＧＡ_３、ＡＢＡ、Ｚ、ＺＲ对蕾花果脱落的具体作用方式；同时研究了不同光周期和光照强度与脱落的关系及所引起的内源激素的变化。结果表明，蕾花果中ＡＢＡ含量升高是引起脱落的主要原因，不利的外界因素可诱发ＡＢＡ的变化，而长光周期和充足的光照有助于减少蕾、花、果的脱落。In this paper, changes of endogenous hormone were studied in the course of potato floral bud, flower and berry abscission with potato Var. 081 and NS40-37 which were the parents of Wu-H4 by field and laboratory experiment, the laws of endogenous hormene change and the ways of IAA, ABA, GA3, Z, ZR acting on abscission were clarified, meanwhile the effect of photoperiod and light strength on abscission and endogenous hormone changes were also studied. The results showed that increase of ABA in floral buds, flow- ers and berries was the chief factor of causing abscission and unfavourable environmental factors could cause the incsease of ABA content. Long light period and sufficient light were favourable to the reduchion of abscission.

关 键 词：马铃薯 内源激素 光照 落蕾率 落花率 落果率 

分 类 号：S532[农业科学—作物学]