查询词典 stem borer

In order to enhance its resistance to bacterial blightand lepidopteran such as leaffolder, striped stem borer and yellow stem borer etc, we intergessed Xa21 and Bt genes into the genetic background of 93-11 by backcross scheme, combining with molecular marker-assisted selection and phenotypic selection. Through three backcross and two self generations, eight families that have homozygous Xa21 and Bt genes were obtained in the BC3F3 families. Two families show higher recovery percentage of 93-11 even up to 90.59%.

为了进一步提高其对白叶枯病的抗性、同时增加其对水稻鳞翅目害虫（如稻纵卷叶螟、二化螟和三化螟等）抗性，利用常规回交育种方法和结合分子标记辅助选择将Xa21基因和Bt基因同时导入93-11中，在BC3F3家系中筛选到8个家系含纯合的Xa21基因和Bt基因，其中有两个家系与93-11比较其遗传背景的回复率很高，达到90.59%。

In addition, the primary choice of resistance to Bt of rice stem borer is conducted through artificial diets of rice stem borer.

另外，本文利用二化螟人工饲料对二化螟抗Bt品系进行了初步的选育。

But on the natural stem borer infestation condition, the improved 93-11 contained Bt gene and its hybrid was not damage by stem borer.

在自然诱发螟虫条件下，带有Bt基因的株系及其杂交种没有受到螟虫危害。

Rice stem borer; artificial diet; orthogonal design; key factors; rice stem borer resistance to Bt

二化螟；人工饲料；正交试验设计；关键因子；抗Bt品系

In second generation, the result is contrary.4. The results of the two orthogonal designs of artificial diet of rice stem borer both indicate that sucrose and wheat germ flour are key factors of survival days of rice stem borer.

二化螟人工饲料两次正交试验的结果均表明，蔗糖和麦芽粉是影响二化螟幼虫历期的关键因子，水稻茎粉、麦芽粉、酵母粉和稻糠粉是影响二化螟幼虫成活率的关键因子，水稻茎粉是影响二化螟蛹重的关键因子。

To screen resistant rice varieties in Liaohe Valley to the rice stem borer Chilo suppressalis Walker, development of and damage by the borer larvae on the varieties were examined using intact-plant resistance evaluation method, and morphological and biochemical characteristics and number of silica cells of the rice varieties were determined to explore the potential resistance mechanisms.

采用活体成株鉴定法测定了辽河流域主栽水稻品种对二化螟发育和为害的影响，同时测定了不同品种的主要形态特性、硅细胞数量和主要生化特性，评价这些品种对二化螟的抗性、分析其发生的可能机制。

The present investigations show that Bt rice possesses high efficiencies for controling rice stem borer, yellow stem borer and rice leaf roller, and there are no significant differences in growth and development of non-target organisms, such as rice planthoppers, leafhoppers and predators, and the stability of arthropod community structure between Bt rice and conventional rice paddy habitats.

现有的研究表明，Bt水稻对二化螟、三化螟和稻纵卷叶螟等主要靶标害虫具有较高的抗性水平，对稻飞虱、叶蝉、捕食性天敌等非靶标生物的生长发育和稻田节肢动物群落的稳定性无明显影响。

Asian stem borer is polyphagic and has 2-3generations on different host plants in one year .whatmore ,the interactions between Asian stem borer and its hosts increase its genetic aberrance .

长期以来，二化螟给我国的水稻生产带来了严重的经济损失。二化螟食性杂，寄主范围广，与众多寄主存在复杂的交互作用使得其遗传差异变大。

Chilo suppressalis(Lepidoptera:Crambidae),the striped stem borer or Asian rice borer,is a widespread insect species,extending from Asia and Oceania into the Middle East and Europe.

二化螟Chilo suppressalis属鳞翅目Lepidoptera，草螟蛾科Crambidae，其分布范围广、经济危害重，是水稻种植区的最主要害虫之一。

The results of the two orthogonal designs of artificial diet of rice stem borer both indicate that sucrose and wheat germ flour are key factors of survival days of rice stem borer. Rice stem flour、 wheat germ flour、 yeast flour and rice stem chaff flour affect the survival.

二化螟人工饲料两次正交试验的结果均表明，蔗糖和麦芽粉是影响二化螟幼虫历期的关键因子，水稻茎粉、麦芽粉、酵母粉和稻糠粉是影响二化螟幼虫成活率的关键因子，水稻茎粉是影响二化螟蛹重的关键因子。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失