无性繁殖的
- 与 无性繁殖的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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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。
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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。
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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。
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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。
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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
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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。
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Corylus heterophylla vegetative propagation was relatively difficult, layering method was mainly used at present, but low coefficient of propagation limited mass production of its seedlings.
榛子是一种无性繁殖相对困难的树种,目前主要采用压条法进行繁殖,繁殖系数低,这限制了榛子苗的大量生产。
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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。
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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。
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Cloning of animals is a group of special animal groups, through human asexual reproduction means, From a background of animal cells is the same group of individuals.
克隆动物是一群特别的动物群体,是人类通过无性繁殖的手段,从一个动物细胞获得背景相同的个体群的过程。
- 推荐网络例句
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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。
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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。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?