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The shape of pollen and RAPD were effective for differentiating the sexual distinction of dioecism.

实验指出，花粉形态和基因组DNA的多态性分析是进行性别鉴定的有效方法。

The resulsts indicated that:there was a great difference in the pollen shape of male and female Vitis, the pattern of SOD isozyme were the same in male and female dioecism Vitis; some of the results of RAPD were polymorphic between the male and female.

结果表明：葡萄雌雄株的花粉形态存在着较大的差异；在本实验条件下葡萄雌雄株叶片SOD同工酶谱带一致；一些引物的RAPD产物间存在着多态性，在葡萄雌雄株的基因组DNA序列中存在着碱基排列顺序的差异。

We differentiated the sexual distinction of dioecism Vitis by observing the shape of pollen under a scanning electron microscope; analyzing the isozyme of SOD in leaves; detecting the polymorphism of genomie DNA with the method of RAPD.

通过扫描电镜观察花粉的形态；分析叶片超氧化物歧化酶同工酶；RAPD分析基因组DNA多态性，来鉴别葡萄的性别。

Subsequently, the tapetum cell began to disorganize, and it kept the strongest Ca^2＋ fluorescence intensity from microspore to pollen maturity until the tapetum was disappeared completely.

在花药壁组织内Ca^2＋分布也呈现规律性的变化：造孢组织时期，花药壁组织Ca^2＋荧光强度在不同壁层组织中分布均匀；小孢子母细胞时期，药壁中层细胞Ca^2＋荧光最强，绒毡层细胞次之；单核小孢子时期，绒毡层细胞呈解体状态，Ca^2＋荧光最强，并保持到二核花粉时期直至绒毡层完全消失，但此时花药纤维层发育形成，表现出较强的Ca^2＋荧光。

Barley seeds were irradiated with five different doses of 60 Co-γ ray.There were many kinds of chromosome aberration in pollen mother cells,such as bridge,laggards in anaphase I and anaphase II,asymmetrical division in anaphase I and asynchronous division in anaphase II,ring quadrivalent in metaphase I,three pole division and micro-nuclei in telophase I,micro-nuclei in tetrad and some micro-nucleus separates from the tetrad to form polyad.

大麦种子经5种不同剂量γ射线辐照后， M1植株的花粉母细胞出现多种染色体畸变类型，例如后Ⅰ、后Ⅱ中出现桥、落后，后Ⅰ中出现不对称分裂，后Ⅱ中出现不同步分裂，中期Ⅰ出现环状四价体，末期Ⅰ中有三极分裂和微核，四分体中出现微核且有的微核独立于四分体，从而形成多分体。

Pollen captures on hornbeam and field maple appeared to be higher than those on dogwood and hazel.

对角树和外地花粉捕捉枫似乎比山茱萸和榛高。

To offset the high frequency of composite and cheno-am pollen, Minhringer applied a technique known as the double fixed sum .

采用the double fixed sum技术是为了抑制频度很高的菊科和藜-苋科花粉的影响。

Wheat and durum were taken as acceptors and the DNAs of 7 different plant materials were taken as donors, authors had studied seed-bearing ratio of modern generation plants transformed by pollen tube pathway. The results were shown as follow.

以普通小麦和硬粒小麦为受体、以亲缘关系不同的7个材料作供体，研究了花粉管通道法转化植株的当代结实率。

The seed-bearing ratio of wheat as an acceptor were highest on plant transformed from 4 to 8 hour after given pollen, but the seed-bearing ratio of durum became dispersing at different time.

结果表明：(1)受体为普通小麦时，在授粉后4~8h转化植株的结实率较高；受体为硬粒小麦时，时间上较为分散。

The 2n pollen producing diploid hybrids have good breeding values for yield,earliness and starch content.

说明烤烟品种的产量和质量性状受加性效应和非加性效应基因的共同控制。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！