Anther and Pollen Wall Development in Dumasia miaoliensis Liu and Lu (Fabaceae)

Taiwania

Chia-Chin Liu¹  Tseng-Chieng Huang² 

[1] Department of Life Science, Tzu Chi University, Hualien 970, Taiwan.;Graduate Institute of Plant Science, Colleage of Life Science (Department of Botany, College of Science) National Taiwan University, Taipei, Taiwan 106, Republic of China.;

关键词: Callose;    Dumasia miaoliensis;    Fabaceae;    Probacule;    Protectum;   

DOI  :  10.6165/tai.2003.48(4).273

来源: DOAJ

【 摘 要 】

This paper is intended for elucidation the anther and pollen wall development of Dumasia miaoliensis Liu and Lu (Fabaceae). The undifferentiated anther is ovoid-shaped and tetrasporangiated. The anther wall development is basic type, which is composed of an epidermal layer, an endothecial layer, two middle layers and tapetum. Anther-tapetum is glandular type and its’ cells are uniseriate and uninucleate. Pollen grains are 6-porate and 2-celled at the time of shedding. Before protectum development, a glycocalyx layer is deposited on the invaginated plasma membrane, exclusive of the future apertures. Subsequently, the probacules, arising basally from the plasma membrane, elongate under the protectum. The foot layer and endexine formation are concomitant with the callosic wall dissolution. The foot layer is thin and interrupted, but the endexine is thick and continuous. The intine is initiated in the vacuolated stage.

【 授权许可】

Unknown