摘要
为探讨烤烟生长早期烟株中下部腋芽发生的机理,在人工气候箱内进行低温诱导模拟试验,观察烟苗腋芽发生规律,通过测定顶芽、根系、叶片中激素、糖、氨基酸的变化,分析早期腋芽产生的生理生化条件。研究表明,低温可导致烟苗早期下部腋芽的产生。顶芽内IAA含量大幅下降,IAA/ZR下降,而根中ZR,GA3大幅下降,IAA/ZR升高,地上、地下激素平衡的改变促进了腋芽的发生。碳水化合物的积累为腋芽的产生提供了物质基础。
In the control led-environment chambers with nine treatments, the physiological and biochemical conditions of the axillary bud sprouting were researched by observing the sprouting of the axillary buds,measuring the contents of hormones in the terminal buds and roots and the contents of sugar and amino acid in the leaves of tobacco to investigate the sprouting and growing mechanism of the axillary buds at the middle and below parts of tobacco stem at the early seedling stage. Results indicated that low temperature could cause the axillary buds of the lower axil to sprout at the early seedling stage of flue-cured tobacco, resulting from the decrease of the content of IAA and IAA/ZR in the terminal buds and the content of ZR and GA3 and the increment of the ratio IAA/ZR in the roots. The accumulation of carbohydrate supplied the matter and energy for the axillary buds to grow.
出处
《河南农业科学》
CSCD
北大核心
2006年第12期32-35,共4页
Journal of Henan Agricultural Sciences
基金
郑州大学博士科研启动基金项目
关键词
烤烟
低温诱导
腋芽
激素
Flue-cured tobacco
Low temperature induction
Axillary bud
Hormone
