[麦冬（阔叶麦冬）和麦冬花药与花粉发育的细胞学比较]
[Cytological comparison of anther and pollen growth in Liriope spicata var. prolifera and L. spicata].
作者信息
Zhou Qun, Zhou Jian-Qiu, Cheng Jun-Qi, Wang Jing-Jing, Chen Jia-Chun
机构信息
Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji School of Pharmaceutical Science, Huazhong University of Science and Technology, Wuhan 430030, China.
出版信息
Zhong Yao Cai. 2009 Aug;32(8):1188-91.
OBJECTIVE
To compare the difference of anther and pollen growth between Liriope spicata var. prolifera and L. spicate, and investigate the mechanism of the sterility of Liriope spicata var. prolifera.
METHODS
A comparative study on anther and pollen growth process was carried out between L. spicata var. prolifera and L. spicata by means of paraffin section.
RESULTS
In L. spicata, the tapetum was secretory tapetum and began to degrade during dyad stage. The cells of tapetum and middle layer disappeared thoroughly when pollens were fully mature at 3-celled stage. In L. spicata var. prolifera, the degradation of the tapetum took place at the early time of meiosis stage and the tapetum cells inflated like vacuolization. The mononuclear pollens were abortive, which eventually formed abnormal pollens.
CONCLUSION
The pollen abortion of L. spicata var. prolifera is associated with tapetum heteroplasia and degradation in advance.
目的
比较多花麦冬与麦冬花药和花粉发育的差异，探讨多花麦冬雄性不育的机制。
方法
采用石蜡切片法对多花麦冬和麦冬的花药及花粉发育过程进行比较研究。
结果
麦冬绒毡层为分泌型绒毡层，在二分体时期开始退化，花粉在三细胞期完全成熟时，绒毡层细胞和中层细胞完全消失。多花麦冬绒毡层在减数分裂前期开始退化，绒毡层细胞膨胀呈液泡化，单核花粉败育，最终形成异常花粉。
结论
多花麦冬花粉败育与绒毡层发育异常及提前退化有关。
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