对...授粉

Common buckwheat ( F. esculentum ) is an allogamy crop, which is heterogony. There is heterogeneity in the species. To reveal the genetic diversity within cultivar population, In order to explore the sampling strategy that can reveal genetic diversity of buckwheat resources on the molecular level. PCR with intron-splice junction primers and long random primers was employed to reveal the genetic diversity within nine common buckwheat varieties and one tartary buckwheat cultivar population among different individuals. We established the sampling strategy in its genetic diversity study. Then we used the established sampling strategy, and the same PCR markers technique,to analysis the genetic diversity of 86 common buckwheat resources, the main results are as follows

甜荞是花柱异长自交不亲和的异花授粉作物，品种内存在一定的异质性，为了准确揭示甜荞遗传资源的遗传多样性，本研究采用因子分析法对86份甜荞遗传资源农艺性状数据进行分析；采用长随机引物和内含子切接点引物的PCR分子标记技术，对9个甜荞品种和1个苦荞品种不同个体间的遗传多样性进行了分析，建立了甜荞资源遗传多样性研究的取样策略；并利用建立的取样策略，采用PCR标记技术，对这86份甜荞资源的遗传多样性进行了分析，取得如下主要结果

Uses: A selective aphicide used in cereals, fruit, ornamentals, strawberries, potatoes, sugar beet, fodder beet, cotton, oilseed rape, tobacco, and glasshouse crops, effective against organophosphorus-resistant Myzus persicae . Phytotoxicity: Compatibility

抗蚜威对瓢虫、食蚜蝇、蚜茧蜂等蚜虫天敌没有不良影响，因保护了天敌，而可有效地延长对蚜虫的控制期，抗蚜威对蜜蜂安全，用于防治大白菜、萝卜等蔬菜制种田的蚜虫时，可提高蜜蜂授粉率，增加产量。

This syndrome impacts seriously not only on the apiary industry, but also on crop production and on native plants that rely on honeybees for pollination.

此症严重地冲击养蜂事业，亦对赖以蜜蜂授粉之农作物的生产及对野生植物永续发展产生严重地威胁。

By real-scanning through a scanner,the pigmentation of anthocyanidin in pericarp was studied with three black indica varieties during caryopsis development in different days after pollination under natural and artificial controlled conditions.

以3个籼型黑米品种为材料，利用扫描仪对颖果进行即时扫描观察，对自然条件下和人工控制条件下，授粉后不同天数的颖果皮在发育过程中花色素的沉积进行研究。

On the base of review the research development in tissue culture and genetic transformation, Comparative analyses were made on the callus induction and embryogenetic abilities of anther and non-pollinated ovules of rubber tree. Fluorescence detection was implemented with the different in vitro material of Hevea brasiliensis.

本研究在综述了橡胶树组织培养及遗传转化研究进展的基础上，系统地比较了橡胶花药和未授粉胚珠愈伤组织诱导及体细胞胚胎发生能力，对橡胶树不同离体组织进行荧光背景检测，将在植物胚胎发育时期起重要作用的BBM基因导入橡胶树，对电激法转化游离小孢子细胞以及农杆菌介导花药愈伤组织进行初步探索。

GA could significantly increase the length of the lower three nodes; and it could also increase the length, width and area of the upper three leaves, favorabe for pollinization and thus having important roles in increasing the seeding rates for hubrid rice seed production.

从九二○的使用效果看，&九二○&能明显提高倒1、2和3节间的长度，对上部3片叶子的长、宽度和面积影响不明显，利于母本授粉，对提高制种结实率和产量有重要效果。

Therefore, we selected common species of Ranunculaceae. comparative primordial plants in Alpine Meadow at Eastern QinghaiTibetan Plateau, and studied the reproductive strategies, such as reproductive allocation, especially sex allocation, to understand how the plants adapt the environmental conditions. The results showed:(1) At higher altitude, the self-incompatible plant, such as Trollius ranunculoides tended to become limited by pollination rather than by nutrient availability, while the self-compatible plants, such as Anemone rivularis and A. obtusiloba seemed not to be limited by pollen availability, which suggested that ability of self pollination for alpine plants may be a mechanism of reproductive assurance.(2) Influences induced by high altitude on the reproduction of these species occurred on different reproductive characters, which suggest species-specific adaptive strategies. The influences are dependent on plant size to some extent.

因此，我们选择在青藏高原东部的高寒草甸，以比较原始的植物类群—毛茛科植物为研究对象，选择一些常见种探讨其繁殖对策，如繁殖分配和性分配问题，试图揭示这些植物如何适应环境条件，最后的结果表明： 1高寒草甸高海拔区，自交植物(如小花草玉梅A.rivularis和钝裂银莲花A.obtusiloba)的繁殖不受花粉限制，而完全异交植物(毛茛状金莲花T.ranunculoides)的繁殖受花粉限制，表明高海拔地区植物的白花授粉能力可能是一种繁殖保障机制，能够避免恶劣环境对植物有性繁殖的不利影响； 2海拔高度对植物的影响因种而异，不同的物种受影响的繁殖性状不同，即使同属亲缘种间也存在差异，表明不同物种对相似环境压力的适应对策不同；而且，海拔高度对植物的影响在一定程度上依赖于植物个体大小，说明植物通过调整其个体大小与繁殖性状的关系来适应环境梯度的变化； 3植物花期和果期的繁殖分配并不完全随海拔升高而减小(只有小花草玉梅的果期RA随海拔升高而减小30％)，与Iwasa和Cohen的预测不完全一致(他们认为繁殖分配随生长季缩短而减小)。

UC Berkeley Professor Ignacio Chapela was also targeted after he published evidence that GM corn had cross-pollinated with indigenous Mexican varieties, forever contaminating "the world's genetic reservoir of corn."

美国加州大学柏克莱学院依戈纳希奥·查帕拉教授发表证据证明转基因玉米对墨西哥的玉米品种造成异花授粉，对&世界玉米遗传库&造成污染。

The results showed that the crossing combination of Oriental hybrids ×Asiatic hybrids and Longiflorum hybrids ×Asiatic hybrids were liable to success. It was showed that male parent was fit for female parent.

在杂交育种试验中，采用切割柱头授粉的方法对不同杂交组合进行了研究，结果表明：以东方百合为母本、亚洲百合为父本的杂交组合和以麝香百合为母本、亚洲百合为父本的杂交组合能获得较高的座果率，说明所选父本的花粉对母本的亲和性较好。

We found the relationship among starch metabolism, metabolisms of other components and gene expressing profiling due to the accumulation of sugar. Then, genes expression patterns of starch biosynthesis in leaves and developing endosperms of 5 maize inbreds were studied for the contribution of different genes to starch biosynthesis in endosperm.

为深入了解玉米淀粉合成的分子调控机理，本研究首先以B73、ae/wx和sh1授粉后15天的胚乳为材料，利用18K Affymetrix玉米基因组芯片平台，研究了突变体材料中基因表达谱的变化，发现了淀粉合成受阻后糖的积累对其它物质代谢和基因表达调控的影响；在此基础上，对可能参与淀粉合成的基因以多个自交系为材料，分析它们在叶片和胚乳发育过程中的表达模式，研究了不同成员对胚乳淀粉合成的贡献。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。