二化性

Semi-quantitative analysis results showed that expression level of BmDHR was different in 5 instar larvae and pupa of bivoltine race incubated under different environment conditions.

定时半定量分析显示，BmDHR基因表达水平在不同条件催青的二化性5龄幼虫、蛹体中存在差异。

The the pupation peak of the univoltine groups and the bivoltine groups were obvious,but the trivoltine groups were not obvious.

一、二化性的种群化蛹盛期较明显，而三化性的种群则无明显的化蛹盛期。

Considerable differences were found to be present among silkworm races with different voltinism and between the stock seed and the hybrid silkworm egg of the same race in their diapause characters and tolerance to cold storage.

不同化性的蚕品种之间以及同品种的原种和杂交种之间其滞育性及耐冷藏能力有较大的差异，一般来说，含多化性血缘蚕品种的滞育性低于二化性，二化性低于一化性，原种和原原种的耐冷藏能力低于杂交种，在作长期保存时应分别处理。

The genetic diversity of 36 bivoltine tussah silkworm varieties were analyzed by means of RAPD.

采用RAPD标记技术，对36份柞蚕二化性品种资源的遗传多样性进行分析。

From above, fine genetic resources of asexual reproduction had been found from commercial and bivoltine genetic races.

因此，在我国二化性蚕品种中可获得雌蚕无性繁殖系培育所需的优良种质资源。

The haemolymph cation levels of bivoltine races were about 30% higher than the multivoltine PM.

家蚕二化性品种的血淋巴阳离子水平比多化性品种PM高出30%。

During hot water treatment to bivoltine races, the temperature effect on rate of asexual developed eggs was more significant than that of soaking time.

以我国家蚕二化性现行品种为材料所进行的诱导条件优化研究，首次探明了温汤处理时温度对无性繁殖发生率的影响效应显著超过处理时间。

The photoperiodic reactions of univoltine and bivoltine Asian corn borer Ostrinia furnacalis under alternative and constant temperature conditions were studied in Jilin Province.

在变 温和恒温条件下研究了吉林省的一、二化性亚洲玉米螟的光周期反应。

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。

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

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。