植物研究 ›› 1987, Vol. 7 ›› Issue (1): 155-162.
• 论文 • 上一篇
金春英, 王庭芬
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Jin Chun-ying, Wang Ting-fen
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摘要: 本文观察了红松胚胎发育及其淀粉的分布全过程。红松合子位于颈卵器中上部,分裂时形成的纺锤体与颈卵器长轴呈一定角度,第一次有丝分裂产生2个游离核,它们边下沉边进行第二次有丝分裂,形成4个游离核排列成一层.接着进行第三次有丝分裂产生8个游离核,排成两层并形成细胞壁。第四次分裂产生16个细胞排成四层,组成了原胚,经一个半月的生长发育及胚胎选择阶段,7月中旬进入幼胚的发育时期。8月上旬幼胚已经进行组织和器官分化,此时淀粉逐渐由珠孔端向合点端方向推移,9月末种子成熟。
Abstract: In this paper, the observations on te embryogenesis and the process of distribution of starch were reported. Zygote of Korean pine is located at the middle upper part of the arche-gonium, During cell division, the spindle fibre formed by zygo-tes is at an angle to its major axis. The first mitosis produ-ces two free nuclei and during descending, they mitotically divide for the second time. The four free nuclei produced arrange ina tier. The third mitotic division results in eight free nuclei,arranging into two tiers, and the cell wall is formed. Sixteen cells are formed by the fourth division, and arrange in four tiers, forming aproembryo. After one and half months of growth and development, and the embryo selection stage, in the middle of July, it enters the period of young embryo development. In the first ten days of August, the young embryo already undergoes tissue and organ differentiation. At that Time, the starch gradually moves from the micropyle end to the combining site at the opposite end. Seeds ripen at the end of September.
金春英, 王庭芬. 红松胚胎发育及其淀粉的动态[J]. 植物研究, 1987, 7(1): 155-162.
Jin Chun-ying, Wang Ting-fen. EMBRYOGENESIS AND DYNAMICS OF STARCH OF KOREAN PINE[J]. Bulletin of Botanical Research, 1987, 7(1): 155-162.
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