高州油茶花芽分化与发育特征研究

研究高州油茶花芽分化与发育规律,掌握其分化与发育特征,以期为高州油茶花期调控提供技术支持。以高州油茶为研究对象,采用石蜡切片法观察花芽分化过程,研究其外部形态变化和发育过程、含水率变化和养分含量变化。研究表明:高州油茶于每年5月中旬至10月中旬进行花芽分化,持续时间100~120 d左右;花芽长宽比总体变化特征呈现慢-快-慢的"S"型增长;含水率在41.51%~55.32%之间,经历下降、上升、下降的反复过程;花芽养分含量波动较大,不同元素的变化趋势不同。高州油茶花芽分化时间相差较大,光照充足有利于花芽提早分化。花芽外部形态可直观地反映出内部结构的变化。

Flower bud differentiation and development characteristicsof Camellia gauchowensis Chang

To understand the differentiation of flower bud of Camellia gauchowensis Chang, and to grasp the characteristics of its differentiation, and provide technical support for the regulation and control of the flowering period of C. gauchowensis Chang. Taking C. gauchowensis Chang as the object of study, paraffin sectioning method was used to observe flower bud differentiation process, and to study its external morphology and development process; water content change and nutrient content change. The results showed that the flower bud differentiation of C. gauchowensis Chang from mid-May to mid-October every year, the duration of the flower bud was about 100~120 d; The length and width of flower bud showed a slow - Fast - slow "S" type growth; The water content was between 41.51%~55.32% and occurrred a decline-rise-decline trend. The nutrient content of flower bud fluctuates greatly, and the change trend of different elements was different. The differentiation time of flower bud of C. oleifera in Gaozhou was different, and the light was good for the early differentiation of flower bud. The external morphology of the flower bud could directly reflect the changes of the internal structure.