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中国农学通报 ›› 2010, Vol. 26 ›› Issue (11): 144-147.

• 农学 农业基础科学 • 上一篇    下一篇

小反扭藓原丝体的发育特征与油体形态研究

于淑玲   

  • 收稿日期:2009-12-21 修回日期:2010-01-20 出版日期:2010-06-05 发布日期:2010-06-05
  • 基金资助:

    河北省邢台市科技局自然科学基金项目

Experimental Studies on the Characteritics of Protonema and Observation of the oil body Development in Timmiella diminuta (c. mull.) chen

Yu Shuling   

  • Received:2009-12-21 Revised:2010-01-20 Online:2010-06-05 Published:2010-06-05

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摘要：

【目的】探讨小反扭藓原丝体的发育规律对研究该藓的个体发育、人工培养和探讨生活史，提供新的数据和资料。【方法】在配置改良的Knop营养液，接种用75%的酒精溶液消毒3min孢蒴的孢子，选取孢子萌发、原丝体发育和配子体发生过程中的9个主要特征，对小反扭藓的原丝体发育特征进行了分析,并进行显微照相。【结果】孢子第2天开始萌发，6d时，孢子的萌发率已经达到90％。原丝体系统由绿丝体、轴丝体和泡状原丝体组成。形成空细胞使原丝体断裂，无假根。油体在原丝体的发育过程中，油体的大小没有大的变化，位置发生移动。【结论】此藓孢子的萌发类型---光藓型，原丝体的发育特征是其对生长环境长期适应的结果。

关键词: 地形雨, 地形雨, 降雨空间分布, 黄土丘陵沟壑区, 降雨量

Abstract:

【Objective】This paper was provided new data and information to discuss about Timmiella diminuta (c. mull.) chen’s Development law ,artificial culture 【Method】In the configuration modified Knop nutrient solution, inoculated with 75% alcohol solution of disinfectant 3min spore capsule of the spores, select the nine main features of Spore germination, Protonema development and The process of the Gametophyte, analysis the Timmiella diminuta (c. mull.) chen）’s development characteristics ,and conduct photomicrography.【Result】Spores begin to grow in the first two days, in the sixth days, the spore germination rate has reached 90%. Protonema system is composed of Chloronema, Caulonema and Vesiculate protonema The formation of an empty cell make the protonema disconnect ,with no rhizoid. Oil bodies in the protonema of the development process, the oil bodies have no major changes in the size, but location is moved.【Conclusion】This type of moss spore germination --- Schistostega type, Protonema of the development of its growth environment is characterized by long-term adaptation results.