查询词典 pollination

With 3 waxy maize varieties and a normal maize variety as the tested material, the Logistic equation was used to fit the grain filling process so as to analyze the relationship between the a series of filling parameters and days after pollination and compared the grain filling characteristics of normal maize and waxy maize.

方法］以3个糯玉米品种和1个普通玉米品种为试验材料，用Logistic方程拟合籽粒灌浆过程，分析一系列籽粒灌浆参数与授粉后天数的关系，比较普通玉米与糯玉米的籽粒灌浆特性。

As the pollination drops evaporate, they contract, carrying the pollen grains through the micropylar canal and into contract with the nucellus.

当做授粉下降蒸发，他们缩短，经过 micropylar 运河携带花粉谷粒和进入契约之内以 nucellus。

In thistreatment,some embrocyte,which may originate from the nucellus cell,can be foundin few of ovaries in APⅣ.The embryos in most of ovaries in APⅣ and IR36develop normally,but the endosperm,in which many crystal-like substances wereobserved,by spike-spray with 2,4-D 3-hours after pollination.

少数APⅣ子房的"腔"内出现多个"胚状体"，推测可能来自珠心细胞的分裂；在受精后处理的大部分子房胚胎发育正常，但胚乳发育却不正常，胚乳内观察到许多的结晶体。

This indicates that seed production of the studied species must be reduced by available resources. To detect the difference of seed production between flowers pollinated by self and outcross pollen, hand pollination for bagged flowers has also been conducted in natural populations of the two Pedicularis species.

除了上述结果外，我们的人工实验还表明，人工补充授予同株或异株的花粉都未能增加种子产量，而疏花处理则明显的增加了剩余花的结实，这说明较之于花粉数量的限制而言，资源限制是影响这两种植物雌性育性的原因。

When there was only one pollen donor, gene flow frequency was in direct proportion to the pollen density.(8) The strong pollen competition from self-pollination might contribute to the very low outcrossing rates and gene flow frequencies in rice varieties.(9) The study of rice pollen flow showed that with the artificial disturbance of pollen dispersal there were pollen grains detected at 90 m from the pollen sources.

9对水稻花粉流的研究显示，在赶粉的实验条件下，于远离花粉源的90 m处仍然检测到花粉分布，回归分析显示水稻的花粉可以传播100 m以上，甚至在远离花粉源的200 m的距离处仍然可能有花粉分布，这表明水稻的花粉可以传播非常远的距离。

Other types of variated flowers besides A type because of small amount and simple structure or late-maturing, there was no significant effect on fig wasps' pollination, oviposition and development and maturation of syconia.

除A型外的其他类型的变异花由于数量少且结构简单，或发育后熟，对传粉小蜂传粉、产卵以及花序的发育与成熟没有显著的影响。

Based on the brief introduction of the ohgin,distribution and the collection and conservation of the germplasm resources of apricot,mainly on the variety classification,pollination biology,evaluation of palynology and molecular biology,the genetic and variation characters of hybrid progeny,breeding objectives and technique were reviewed.

文摘：在简要介绍杏的起源、分布及种质资源收集保存的基础上，着重对杏品种资源的分类、授粉生物学、孢粉学及分子生物学评价以及杏杂种后代遗传变异特点、育种目标及育种技术进行了综述，并提出了今后的研究方向。

Based on the brief introduction of the ohgin,distribution and the collection and conservation of the germplasm resources of apricot,mainly on the variety classification,pollination biology,evaluation of palynology and molecular biology,the genet

文摘：在简要介绍杏的起源、分布及种质资源收集保存的基础上，着重对杏品种资源的分类、授粉生物学、孢粉学及分子生物学评价以及杏杂种后代遗传变异特点、育种目标及育种技术进行了综述，并提出了今后的研究方向。

The result showed that pericarp thickness was significantly different among different varieties and among different days after pollination.

结果表明，不同品种和不同授粉天数的果皮厚度差异明显；同一品种籽粒内不同部位间的果皮厚度也有较大差异，这种差异在灌浆前期更为明显，主要表现为胚背面的果皮较胚面薄，之后这种差异逐渐缩小。

But it says there were enough honey bees to provide all the agricultural pollination needed last year.

但是它说，那里有足够的蜜蜂提供去年所需的所有的农业授粉。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。