The ascospores, on the other hand, are produced by following sexual reproduction . 另一方面，子囊孢子是在有性生殖之后产生的。
2.
The clone locates daughter tillers by regulating the spacer at length , and the population of rhizome grass tre 31的生物量用于有性生殖生长，而所产生的籽实量仅占2
3.
Under natural conditions , the clonal growing rhizomes of l . sagitta and l . virgaurea were suppressed due to interspecific competitions on the grassland , therefore the reproduction of the two plants mainly dependen on seeds 箭叶橐吾和黄帚橐吾，在自然条件下，其克隆生长的根状茎，受到了草场其它生物的竞争而被抑制，主要进行有性生殖。
4.
In this paper , the whole process of it microsporogenesis and male gametophytes development was observed with microscope to sure weather stamen development is normal . at the same time , in order to provide techniques on biotechnology conservation and the foundation of its resources gene pool in cell engineering , its techniques on culture in vitro was studied 本论文通过对猬实小孢子发生和雄配子体发育全过程进行细胞观察，探寻猬实的雄性器官的发育是否是猬实有性生殖的薄弱环节，并对猬实的离体培养进行了初步的研究，为猬实生物技术保存、建立猬实种质资源基因库提供细胞工程方面的途径和技术。
