无性繁殖

This study ends with a look at the further possibility of asexuality today by exploring Marine and Satoru's asexual love and reproduction.

本论文最后讨论玛丽恩和悟之间的无性的爱和无性繁殖，探讨无性论在未来的可能性。

Ma Lan can use seminal breed to also can undertake asexuality breeds already, emergence rate of direct seeding seed amounts to 85 ％ above, undertake with mature Ma Lan transplant breeds dividing individual plant survival rate is very high also.

马兰既可用种子繁殖也可进行无性繁殖，直播种子出苗率达85％以上，用成熟的马兰进行分株移栽繁殖成活率也很高。

The results showed:(1) the propagation coefficient were from 0.8 to 6.8 in different development phase, the highest propagation coefficient appeared in June, July in dormancy stage and September in initial stage of vigorous growth;(2) all of biological characters, such as cormel's fresh weight, size, height, root length, roughness and root quantities, presented 1% significant difference.

结果表明：(1)不同生长发育期无性繁殖系数在0.80~6.80之间浮动，休眠期的6、7月和旺盛生长初期的9月繁殖系数较高；(2)不同生长发育期无性繁殖的子球鲜质量、最大直径、子球高度、根系长度、根基粗度及根系数量等生物学性状均呈现1%水平极显著差异。

Both of sexual and asexual reproduction was observed in Cycas fairylakea population, and the ratio of the sexual reproduction to asexual reproduction was different in different habitats.

仙湖苏铁兼有有性繁殖和无性繁殖，在不同生境条件下，两种繁殖方式的比例不同。

So the optimum treating temperature to bivoltine races was from 44～46℃. When unfertilized eggs were treated with hot water for 3～68 minutes, asexual developed eggs could be obtained. But the optimum soaking time range to bivoltine races was 14～ 16 minutes.

针对我国的二化性家蚕现行品种，其无性繁殖诱导温度以44℃~46℃为宜；无性繁殖的处理时间适应范围较广，从3min~68min都可获得一定比例的无性繁殖发育卵，我国的二化性家蚕现行品种，其无性繁殖处理时间以14~16min为宜。

The asexual reproductive eggs and larvae were obtained when 50 commercial and bivoltine races induced by hot water. But the rate of asexual developed eggs varied markedly among these races, the range was 11. 99～88. 88 percent. About one-third races, their rates of asexual developed eggs attained 70～80 percent. The rate of asexual developed eggs about hybrid was higher than its parent.

对我国50个二化性现行品种资源进行无性繁殖发生率调查，结果表明各品种都可经诱导获得一定比例的无性繁殖发育卵和幼虫，但品种间存在较大差异，其发生率范围在11.99~88.88%之间，有1/3品种的无性繁殖发生率达到70~80%，而杂交种的无性繁殖发生率明显超过原种的水平。

In this study, nine aspects had been carried out, which included the condition optimization of inducing silkworm asexual reproduction; the effective technique of obtaining unfertilized eggs from virginal moth; the investigation of asexual reproductive genetic resources on bivoltine silkworm races; the creating of bivoltine female asexual reproductive lines; the genetic effect analysis of silkworm asexual reproductive character; the eggs protein study on different female lines; growing and developing comparison between asexual reproductive line and its sexual parent; RAPD study on asexual reproductive character; the utilization of asexual reproductive lines.

本论文主要研究内容包括：家蚕无性繁殖诱导条件的优化；从家蚕处女蛾获取未受精卵的实用技术研究；二化性家蚕品种无性繁殖特性的遗传资源调查；二化性雌蚕无性繁殖系的构建；家蚕无性繁殖性状的遗传效应分析；家蚕无性繁殖品种的蛋白质研究；家蚕无性繁殖品种与其两性亲本生长发育对比研究；控制家蚕无性繁殖性状的基因的RAPD分子标记探索以及家蚕无性繁殖系的利用研究等九个方面，取得的主要结果如下

Seveteen fine biovotine female lines also had been bred out after 5～10 generations selecting directly to the bivoltine genetic resources, which included 8 Chinese female lines, 8 Japanese female lines and 2 hybrid female lines. These female lines could be reproduced easily by asexual reproductive way, their rate of asexual developed eggs were high with only female generations and economic characters were also stability.

采取直接利用无性繁殖性状较优良的二化性现行品种资源构建雌蚕无性繁殖系的方法，经5~10代的无性繁殖继代选择，初步育成了17个雌蚕无性繁殖品系，其中中系品种8个，日系品种7个，杂交种2个。

Three Chinese and Japanese female lines had been bred out after about 10 generations selecting and improving to the materials, which were obtained by crossing the commercial races and the univoltine female races introduced from Russia.

利用俄罗斯引进的雌蚕无性繁殖系与我国实用品种杂交的方法，经过10代左右的连续无性繁殖继代选育，初步育成了中系雌蚕品种无3、无5、无7和日系雌蚕品种无4、无8、无10。

In the present study, tiller formation and growth characteristic for three kinds of Hemarthria compressa genet at different growth and development stage were analyzed. It was found that Hemarthria compressa tillered very regularly at the seedling stage, with tillers coming out in batches after 5~7d, 23~26d, 41~45d of propagation. When the plant was 15~20cm high, it started to grow horizontally and the regenerative tiller started to grow vertically.

通过对3份扁穗牛鞭草材料的无性繁殖基株在不同生长发育阶段的分蘖形成及其生长特点进行研究，结果表明：无性繁殖牛鞭草苗期分蘖的产生表现出明显的节律性，种植后5~7d、23~26d、41~45d分批形成分蘖，长到15~20cm时，都转向横向生长。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。