查询词典 pollen tube

The article report the variations in maize seed protein content and components are effected by introducing exogamous DNA from soybean through the pollen-tube pathway, and the maize was selfpollination in 2-3 years.

文章摘要：报道了采用花粉管通道法转大豆DNA的玉米在自交选育2～3年后。玉米籽粒中的蛋白质含量变化。

Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.

雄原核：在被子植物花粉管中的生殖细胞分裂成两个配子的核。

Therefore,foliar spraying ofboron was the main measure during flowering period so as to stimulate thegermination and growth of pollen tube,regulate endogenous hormone balance ofovary and promote gynospore formation and,during the phase of young embryodevelopment,spraying of relevant plant growth regulators and potassiumsupplement were essential to stimulating the increasing of endogenous GA1/3 andiPAs,raising the key nutritious substance content in ovary and promoting youngembryo development.

因而花期调节以喷B为主，以便促进花粉管萌发生长，调节子房内源激素平衡，促进大孢子形成；幼胚发育期以植物生长调节剂喷布和K素补充为主，以便启动子房内源GA1/3、iPAS等上升，增加还原糖、淀粉、蛋白质积累和K素吸收，促进幼胚发育。

The experimental results indicated that exogenous gene could be transformed by the Pollen tube pathway Transformation, and the new breeding method of Papaver nudicaule was provided.

有目的基因特异带出现。实践证明：在野罂粟上，利用花粉管通道法进行几丁质酶和β-1，3-葡聚糖酶基因转化方法可行，为特殊中药材转基因技术提供一个新方法。

Platycodon grandiflorum; fluorescence microscopy; pollen tube; self-compatibility

桔梗；荧光显微镜技术；花粉管；自交亲和

Since 1992,in the Institute of Biological Science and Technology of Hainan University,the pollen tube introduction method was used to breed tomato with total DNA of Rhizophora apicularta,a salt-tolerant,seashore-grown plant.

1992年以来，海南大学生物技术研究所开始用花粉管方法将红树总DNA导入普通番茄，在海滩上用海水进行耐盐性筛选，首次获得了能耐海水浇灌的耐盐番茄。

Effects of temperature on degradation of pollen tube RNA by the stylar S-RNase from Prunus mume were investigated, which provided an experimental basis for elucidating the mechanisms of self-incompatibility in Prunus mume.

研究不同温度对果梅花柱S-RNase降解花粉管RNA的影响，为揭示果梅自交不亲和性机制提供依据。

So far, nsLTP was proposed to promote the spreading of systemic acquired resistance signal in arabidopsis, and induce the adhesion of the pollen tube to an artificial stylar matrix in vitro, suggesting a receptor-like molecule likely exists in the cell membranes.

三级结构主要由四个α-螺旋组成，四个α-螺旋由四对二硫键相连，形成一个能结合各种脂质分子的疏水性孔穴。

Oleracea is observed using aniline blue staining method to understand the interaction between pollen tube and pistil ready to be transformed.

通过对花粉管进行组织化学染色和光镜观察，比较研究了甘蓝型油菜、白菜型油菜和甘蓝的花粉管生长规律。

Sorghum genome DNA had been transfered into rice variety via pollen tube pathway. In this paper, the molecular verification was performed by SSR technique. The result shown seventeen of sixty pairs of primers can reveal polymorphisms among donor, receptor and their stable offspring. Same bandings were amplified between donor and some offspring.

从60对SSR引物中筛选出17对，对供体高粱、受体水稻及其外源DNA导入后代稳定材料进行了分子验证，结果表明供体高粱与受体水稻间存在多态性、受体水稻与后代稳定材料间出现多态性，供体高粱与部分后代稳定材料间出现相同的扩增带，部分供体与受体共有的特征带在后代中消失、而有些后代出现了供体和受体均没有的扩增带。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。