满江红九膘亚属种雄性育性的初步调查研究

将满江红九膘亚属3个种小孢子育性调查结果分成两大类.第一类特点是小孢子败育程度严重,全败育或近全败育;第二类特点为小孢子败育程度轻或较轻,总败育率变化幅度大.讨论了影响小孢子育性因素——遗传和外界环境条件.另外,就大型小孢子的发现,推测未减数配子可能是形成多倍体途径之一.

A Preliminary Investigation on Male Fertility of Azolla Species in Subgenus Rhizosperma

Based on the data from investigation, the fertility of microspore in 3Azolla species belonging to Subgenus Rhizosperma could be divided into 2 groups, In the first group, the microspore is seriously sterile, totally sterile or nearly totally sterile while the microspore in the second group is slightly sterile with a narrow range of variation of total sterility. Moreover, the factors-heredity and environmental condition which affect the fertility of microspore are discussed in this article. In addition, on basis of discovery of mega-microspore, the gamete without meiosis is inferred as one of possible pathway to form Azolla multiploid.