溫度對水稻分蘖及根部Cytokinins活性變化之影響
Other Title
EFFECTS OF TEMPERATURE ON THE TILLERING AND THE ENDOGENOUS CYTOKININ ACTIVITIES IN RICE ROOTS
Journal
中華農學會報
Journal Issue
新123
Pages
1-12
Date Issued
1983-09
Author(s)
卜瑞雄
朱鈞
Ra-Hsiung Buu
Chun Chu
Abstract
人工氣候室不同日/夜溫度對水稻分蘖及根系發育之影響很大。在 25/20℃ 及 30/25℃時，移植二週分蘖數即開始急速增加，而於移植後 28-35 天分蘖停止增加。但在 20/15℃ 下，分蘖初期增口緩慢，且一直持續增加，然卻遲遲不抽穗。不同溫度對每株根系鮮重之增加亦有顯著之影響，以 25/20℃時增加最快，於移植後35-42天達最高，高溫及低溫下，根重之增加則受抑制。
Two Japanese early-maturing rice cultivars, Nipponbare and Kwanglu-ai 4, and a local cultivar Tainung 67 were grown under three temperature regimes (20/15, 25/20, 30/25 ℃) for the determination of endogenous cytokinin activities in the roots at different stages of plant development. Its relationship with tillering capacity was also investigated.
Subjects
分蘖
水稻
活性
根部
溫度
Publisher
中華農學會
Type
journal article