森林与环境学报2017，Vol.37Issue(2)：142-147,6.DOI:10.13324/j.cnki.jfcf.2017.02.003
杉木胚珠的解剖学观察
Anatomical observation of ovule of Cunninghamia lanceolata
摘要
Abstract
In order to study the morphological and structural changes of ovules“ abortion process of Cunninghamia lanceolata,the morphology and structure of the fertile ovules and the abortive ovules were observed by semi-thin section method with Epon 812 as embedding medium.The results showed as follows.As the abortive seed,the pollen tube grew in the aborted ovule could continue to extend to the chalazas of the ovule which would make preparation for the fertilization which was similar to the fertile ovule.Normally developed female gametophyte could be formed in the centre of the nucellus in the fertile ovule,while the normal female gametophyte could not be formed in the abortive seed ovule because of the reduced nucellus which would lead failed fertilization.Material firstly appeared at the micropyle of abortive ovules,and then gradually extended to the basal part of theovule.In fertile ovules,the nucellus tissues would be degraded during the process of the female gametophyte development;while in the abortive ovules,the nucellus tissues were retained as the abnormal female gametophyte development.关键词
杉木/胚珠/半薄切片/可育/败育/雌配子体/珠心组织Key words
Cunninghamia lanceolata (Lamb.) Hook./ovules/semi-thin section/fertile/abortion/female gametophyte/nucellar分类
农业科技引用本文复制引用
张炎,左丹丹,陈宇,熊升,王珍,林思祖..杉木胚珠的解剖学观察[J].森林与环境学报,2017,37(2):142-147,6.基金项目
国家林业局杉木工程技术研究中心平台建设(ptjh130002) （ptjh130002）
福建农林大学校重点项目建设专项“人工林培育学科建设”(6112c0310) （6112c0310）
林学学科建设项目(6112c0300). （6112c0300）
