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Moreover, the obligative parthenogenesis individuals had been found in the cucumber specialized aphids, but not in the cotton specialized aphids.

瓜型棉蚜在诱导条件下产生无孤雌蚜的比率显著高于棉花型棉蚜,并且发现有不产生有性世代的营专性孤雌生殖个体,而在棉花型棉蚜中没有发现。

Seeds obovoid or ovoid; wing long, membranous.

种子倒卵球形或卵球形;长,膜质。

Damselfly is the common name for any of the predaceous insects comprising the suborder Zygoptera of the order Odonata, characterized by an elongated body, large multifaceted eyes that are widely separated, and two pairs of strong transparent wings, which at rest typically are held folded together above the abdomen or held slightly open above the abdomen.

蜻蛉 蜻蛉俗称&豆娘&,学名&Ischnura heterosticta&。&蜻蛉&是一个通用名称,指的是任何带有蜻蜓目均亚目特征的肉食昆虫。这种昆虫体型细长,复眼较大且间距较宽,同时长有强壮而透明的膀——典型特征为折叠在腹部之上或在腹上微微张开。

First bar extending uninterrupted and undiminished across opercle and onto thoracic region, and continued across ventral surface of body; a well defined black mark on ventral surface of body immediately anterior to base of pelvic fins.

第一栏延长不间断地与 undiminished opercle 及胸部区域上,继续在前的表面的团体;清晰的黑标记腹表面的身体立即前到盆腔在其他 Coius 中不存在)的基础。

Flufenoxuron has very high insecticidal and ovicidal activity.

卡死克农药具有很高的杀虫和杀卵活性,可防制玉米、棉花、果树、蔬菜和大豆上的鞘目、双目和鳞目害虫。

Oedipodidae has the most species in grasshopper accounting for 16.7% of total species.The main fauna elements are Palearctic species.

其中蝗虫类种数最多,占总种数的62.5%,蝗虫中斑蝗科的种类又最多,占总种数16.7%。

The karyotypes of four species in Pentatomidae were studied in male germ cells prepared on air dried slides stained with Giemsa.Karyotype analyses using specific software are made for the first time in pentatomid karyotypic study and model karyotype charts are presented.

研究了4种中国蝽科昆虫的核型和染色体的减数分裂行为,并首次在半目中采用核型分析软件对第一次减数分裂中期的染色体进行核型分析。

According to the results of the research,the karyotypes of three species of wingless crickets have common deriving,the variation is due to centric fusion and rission,and pericentric inversion.

的染色体作了比较研究,结果显示,3种无类蟋蟀的核型具有一定相似性,核型的差异可能是由于臂间倒位和着丝粒的融合和裂解。

The flower has calorie of power, sepal egg shape wraps around needle form, petaline corydalis is lubricious, have canaliculus state, straight or go up a bit curved; Florescence 4 ~ May, purple floret, xie Rengqing of after autumn bine is green be like first, the companion other the flower has acicular small fruit, till at the beginning of the winter, ground upside divides ability wither, because this is wonderful ground by the plant, but sheet is planted the predestined relationship issues a Zhi Yulin or on the meadow of exposed to the sun, also but with other herb, wait like bison grass, dandelion mix kind, form level ground of beautiful compose flowers and plants.

紫花地丁叶基生,狭披针形或卵状披针形,边缘具圆齿,叶柄具狭,托叶钻状三角形,有睫毛。花有卡柄,萼片卵状披针形,花瓣紫堇色,具细管状,直或稍上弯;花期4~5月,紫色小花,秋后茎叶仍青绿如初,花旁伴有针状小果,直至冬初,地上部分才枯萎,因此是极好的地被植物,可单种成片植于林缘下或向阳的草地上,也可与其他草本植物,如野牛草。蒲公英等混种,形成漂亮的缀花草坪。

The black spots ocurred in the fore wings of male were under photoperiodic control.

雄虫前黑斑的出现是由光周期控制的,只有在短日照下诱导的滞育蛹,滞育解除后羽化出来的雄虫才会出现黑斑。

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推荐网络例句

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。