Sewall Wnight thought it desirable to weight each observation directly as the pollen frequency.
赛沃尔·劳埃特认为把每次观测直接加权作为花粉频率是可取的。
Changing temperature treatment could enhance the induction frequency of pollen embryoid.
变温处理可以提高花粉胚状体诱导频率。
The frequency distribution of characteristic value of the male cones and pollen is abnomal.
杉木雄球花及花粉特征值频率分布为偏态分布。
The results showed that the frequency of pollen dispersal (FPD) among flowers was significantly higher on the same cotton plant than on different ones (P<0.01).
花粉粒染色法监测结果表明：同株异花间的花粉散布频率显著高于异株异花间（P<0.01）；
Induction frequency of pollen callus increased apparently when active carbon (0.5 per cent) was added.
培养基中加入0.5%的活性炭有利于提高花粉愈伤组织的频率。
The flowering phase and dynamics, insect visitors and their behavior and visiting frequency were observed, and the breeding system, pollen-ovule ratio (P/O) and pollen viability were determined.
的开花物侯、开花动态、访花者的种类、行为和访花频率，并对其繁育系统、花粉-胚珠比（P/O）、花粉活力进行了检测。
In meiosis, the pollen mother cells that abnormally acted made up about 10.28% and the male gametophytes abnormally acted at a frequency of 3.2% and mainly aborted at uninucleate stage.
减数分裂过程中染色体行为异常的花粉母细胞约占10.28%；雄配子体发育过程中异常频率约为3.2%，败育主要发生在单核期。
The percentage of normal pollen was only 45.5%, and the total frequency of pollen aborted during developmental process was 54.5%.
在成熟花粉中正常花粉只占45.5%，还有54.5%的花粉在发育过程中发生败育。
Female and male fertility decreased greatly and even vanished thoroughly. Only 5 regenerated plants produced seeds with low frequency. I-KI stainable pollen ranged from 0 to 68%.
雌、雄性育性显著降低或完全不育，仅有5株能够少量结实，I -KI溶液着色的花粉从0至68%不等。
There are significant correlation between induction frequency of pollen callus and differentiation frequency of green plantlets.
花药愈伤组织诱导率与绿苗分化率具有显著的相关性。
Induction frequency varies with the different varieties and it is the highest when the excised anthers with the pollen grains at the middle-uninuclear stage are inoculated.
品种之间诱导频率差异很显著。接种花药时，花粉单核中期诱导频率最高。
The result showed that the induction frequency of pollen callus was irrelevant to the volume of culture containers, and highly related to the density of pollens.
结果表明，小麦花药培养中的愈伤组织诱导效率与培养容器大小无关，与花药接种密度显著相关 ；
The result showed that the induction frequency of pollen callus was irrelevant to the volume of culture containers, and highly related to the density of pollens.
结果表明，小麦花药培养中的愈伤组织诱导效率与培养容器大小无关，与花药接种密度显著相关 ；
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