槜李雌蕊形态及早期胚胎发育研究  

Studies on the pistil morphology and early embryogenesis of Chinese plum cultivar Zuili

作　　者：熊彩珍 贾惠娟[2] 何凤杰[2] 顾立明 

机构地区：[1]浙江嘉兴市南湖区林业与蚕桑站,浙江嘉兴314000 [2]浙江大学农业与生物技术学院,杭州310029

出　　处：《果树学报》2010年第1期124-126,I0002,共4页Journal of Fruit Science

基　　金：浙江省嘉兴市重点科研项目"槜李的资源保护及不良结实性对策的确立研究"(计划编号2005AZ3004)

摘　　要：采用常规石蜡切片法对槜李雌蕊形态和早期胚胎发生发育进行了研究,以期从生殖生物学角度探讨影响槜李低产的原因。结果表明,槜李花柱实心,子房1室,横生胚珠,双珠被,厚珠心。雌蕊胚囊在盛花时仍处在2～4核期。观察的材料中,绝大部分胚囊在盛花后3d发育为成熟胚囊,胚囊蓼型。合子约休眠2～3d后开始分裂。胚乳在盛花7d后出现,八分体原胚出现在第12天。胚胎发生发育过程中有珠心珠被退化、成熟胚囊结构异常等现象。The morphological characteristics of pistil and embryogenesis of Chinese plum cultivar Zuili were studied for clarifying the reason of poor fruit setting with respect to reproductive biologically. Materials were dehydrated,embedded and cut in Paraffin wax. The results were as follows：The style is stuffed; two ovules are contained in the ovary; the ovule was anatropous,biteguminous and tenuinucellate. The embryo sac was staying at the 2 to 4 nucleis stage and on the 3rd day after anthesis reached to the early 8 nucleis stage. The development of the embryo sacs was of polygonum type. The first division of the zygote took place after a dormancy of 2 to 3 days. The development of endosperm conforms to the nuclear type. The primary endosperm nucleus began to divide on the 7th days after anthesis. The globular embryo stage began on 12th day after anthesis. Degeneration of nucellar cells and integument at early stage and abnormal embryo sac structure at mature stage was observed during the development of embryo.

关 键 词：槜李 柱头 胚胎发育 胚胎学 

分 类 号：S662.3[农业科学—果树学]