Results showed that pollen germination rate , pollen stain - ability , pollen grain amount and so out had remarkable difference between the two cultivars and lipeng no . 2 pollen belonged to low - fertility type 结果表明，丽? 2号花粉发芽率、花粉染色活力和花粉粒数量等与有核对照存在显著性差异，属于低育型花粉。
The variance of the pollen of 12 lines is highly significant ( = 0 . 01 ) and the variance of the different source mother root in the same diploid line is significant ( = 0 . 05 ) . the pollen of e type is bigger than the er type 从品系类型来看，丰产型材料的花粉粒直径稍大些，而两份抗丛根病材料的花粉粒直径较小。
Results showed that the pollen grain of p . mira , which is used as material by sem for the first time , was nearly elliptic in shape and the extine pattern was simply striped with no pores 结果表明，光核桃花粉粒的形态呈椭圆球形，其外壁纹饰呈简单的直纹平行型，无穿孔，是最原始的桃亚属植物野生种，未发现与栽培种有直接的关系。
Anther culture ( pollen culture ) the generation of haploid plants from immature pollen grains or intact excised anthers . the resultant plants are generally smaller than their diploid counterparts 花药培养：从未成熟的花粉粒或者切下的完整的花药中再生出单倍体植株的过程。这样培养出来的单倍体植株通常比正常培养出的二倍体植株小。
The pollen grains with different ecological style of germinal apertures in length , width , length and width of lid , shape of lid and the extent of protuberances etc . , especially with several hollows could be the factors resulting in the different germination of pollen 在花粉群体的观察中发现：花粉萌发率最低的杰兔品种花粉粒中，有明显“干瘪”形状的花粉粒比例高达80 . 00 % 。
The length of generative cell nuclei is 3 . 5 - 20 . 0pm . study method on morphology of generative cells in pollen grains and the evolutionistic tendency of genus camellia base on the morphological character and size of generative cell nuclei was also discussed in this paper 笔者探讨了光学显微镜下观察山茶属花粉粒生殖细胞形态的方法，并根据山茶属植物花粉粒生殖细胞核的形状及大小变化，对其演化的趋势进行了讨论。
It was also found that the average number of germinated pollen grains on each stigma of ga mutant was less than that of wild type , while in ga overexpression strains the average number was more than that of control ( wild type and empty vector control ) 体内实验中， gpa1突变体柱头上实际萌发的花粉粒数少于野生型，超表达植株则多于野生型和空载体对照； agb1 - 1突变体柱头上实际萌发的花粉粒数与对照比较差异不显著。
The morphological characteristics of pollen grains of 46 cultivars ( types ) of peach ( prunus persica batsch ) and its 5 related wild species were examined by using scanning electron microscopy ( sem ) in order to analyze the origin and evolution of peach germplasm 摘要通过对桃5个野生近缘种、 46份普通桃种质资源进行花粉粒电镜扫描，分析花粉粒之间形态特征的差异，研究光核桃、蟠桃、碧桃等种质资源在桃起源和演化中的地位。
Cross - section of these male sterile mutant anthers showed that there is no pollen formation in ms157 anther while msl88 anther contains a few pollen grains with pollen shape distorted and reduced cytoplasmic content . however , pollen was formed in both anthers of ms115 and ms214 细胞学观察表明， ec2 - 157花药中不能形成花粉粒， ec1 - 188突变体中只有少量的花粉粒，但花粉粒的内容物较少； ec2 - 115和ec2 - 214突变体中能够形成花粉粒。
