|Title:||水份控制對柑橘碳水化合物含量及花芽形成的影響||Other Titles:||Effect of Water Control on Concentrations of Carbohydrates and Flower Formation of Citrus||Authors:||黃阿賢
|Keywords:||柑橘;乾旱;碳水化合物;花芽形成;citrus;drought;carbohydrates;flower formation||Issue Date:||Dec-1989||Publisher:||臺灣省農業試驗所||Related Publication(s):||農業試驗所特刊第27號||Start page/Pages:||84-97||Source:||柑橘試驗研究成果專題研討會專集||Conference:||柑橘試驗研究成果專題研討會
Proceeding of a Symposium on the Researches and Development of Citrus in Taiwan
Two experiments were conducted to investigate the effect of drought on carbohydrate content and flower formation of citrus. (1) Six months old Rough lemon seedlings were subjected to a water-stressed period of 28 days till 32% RWC of newly full expended leaves. (2) Liu-cheng orange buddlings of nine months old were water-controlled for 2 months.
When Rough lemon seedlings were water stressed, alcohol soluble sugar increased slightly, and starch decreased before the mature leaves wilted. After rewatering there was a lag period of growth, and starch accumulated, its concentration reached 13% to 17% of dry weight.
Because dry weight of leaf (g/m2) of water-stressed seedlings and DW/ FW ratio of rewatered seedlings changed in accordance with the content of total carbohydrate, it should be noticed that nutrient concentration may be influenced if dry weight is used as a basis.
A significant effect of water control on flower bud formation was observed when container-grown Liu-cheng orange young trees were irrigated 150 ml/week for each tree. We found water-controlled trees produced 45.8 flowers per tree comparing with 2.0 flowers of well-irrigated trees after the treatment of 2 months. Soluble sugar content in water-controlled trees was 2.7 times higher than that of well-irrigated trees.
|Appears in Collections:||園藝系|
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