Lanelate脐橙花芽形态分化研究

为探明Lanelate脐橙花芽分化规律,采用石蜡切片法观察其花芽的形态发生和结构发育过程,对各分化时期的特点进行研究.研究表明,在广西桂林地区气候条件下,Lanelate脐橙花芽分化从11月初花原基分化开始至次年3月雌雄蕊形成历时约5个月.分化初期、萼片分化期历时长,分化较慢,其它时期历时短,分化较快.大部分花原基是在12月下旬至1月上旬,旬平均温度为10.1～9.7 ℃时形成;萼片原基主要在次年1月下旬,旬平均温度为1.4 ℃时形成;花瓣、雄蕊及雌蕊则在次年2～3月,月平均温度高于11.23 ℃时形成.

Morphological Differentiation of Flower Bud of Lanelate Oranges

The flower bud differentiation morphogenesia and process of Lanelate was studied by the method of paraffin cut. The results showed that the flower bud differentiation process lasted for five months from the start of floral primordia differentiation in November to pistil and stamen formation in next year March under guilin climate condition in Guangxi. The phases of flower differentiation initial stage and sepal differentiation were relatively longer. When the ten days mean temperature was at 10.1-9.7 ℃,the most floral primordia differentiated in late December to next year early January of Lanelate. The ten days mean temperature was at 1.4 ℃,the most sepal primordia differentiated in late January.When the month mean temperature was more than 11.23 ℃, Lanelate started the differentiation of petal, stamen and pistil phase in next year February to March.