生殖

Crosssing apomictic rice and C4 crop,such as Sorgum,Trapsicum and Panicum maximumespecially by somatic hybridization and gene engineering technique to create new varieties with characteristics of apomixis and high photosynthetic efficiency.

利用无融合生殖水稻与无融合生殖高光效的C4作物，如高粱、摩擦禾、木黍等杂交，特别是体细胞杂交和基因工程技术，创造具有无融合生殖特性高光效作物新品种。

According to the results, we can find that female reproductive systemis made up of ovary, lateral oviduct, common oviduct, spermatotheca, accessory glandand genital chamber, which is typical polytrophic type. Then the male reproductivesystem consists of testes, vas deferens, vas efferens, seminal vesicle, ejaculatory duct,male accessory gland and pygostyle. Moreover accessory gland is fully developed,seminal vesicle is unclear, males testes and testicular follicle has degenerated before itflying, and the quantity of testicular follicle is different from the other kind of ants.

结果发现，拟黑多刺蚁的雌性生殖系统由卵巢、输卵管、中输卵管、受精囊、生殖腔和雌性附腺等结构组成，为典型的多滋式卵巢；雄性生殖系统由精巢、侧输精管、输精管、贮精囊、射精管、雄性附腺及阴茎等结构组成，雄性附腺发达，贮精囊不明显，婚飞前雄蚁的精巢及精巢小管已逐渐退化，精巢小管的数量与其它种类蚂蚁存在一定差别。

The results showed that there was no remarkable difference of reproductive hormone between the idiophase and non-idiophase, which established the theory foundation for the reproductive endocrinology and the artifical breeding of Andrias davidianus, was made.

实验结果表明，雌雄性中国大鲵在繁殖期间与非繁殖期间的6项生殖激素检测结果没有明显的差异，对中国大鲵血清中的生殖激素与繁殖期的相关性进行了初步探讨，为中国大鲵生殖内分泌学的研究和人工繁殖积累了资料。

Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri_ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra .

基于返祖性畸形三胚珠球花的出现及其他形态特征，认为麻黄属胚珠数目减少是该属内物种特化的一个趋势；利用雌球花发育的畸形现象及外珠被的形态学本质提出麻黄属的雌球果为复轴性构造，雌性生殖单位是由类似于科达类的次级生殖枝构造经系统发育变态、融合、简化成现存的生胚珠构造式样，每一可育苞片及其腋内雌性生殖单位共同组成了麻黄属的苞鳞_种鳞复合体。

The change of reproductive behaviors is the exhibition of the change of reproductive function regulated by gonadal hormones.

动物繁殖行为的变化是其体内生殖功能变化的外在表现，而生殖内分泌系统是动物体内调控生殖功能的重要系统之一，其调控作用主要是通过性腺分泌的性腺激素来实现的。

This research, on the reproduction of three species of Millepora at Hengchun Peninsula, was conducted between February, 1994 and July, 1995. In order to understand possible prezygotic isolation between them, I investigated reproductive periods, reproductive characters as well as the roles and functions of medusae in the life history of Millepora.

本研究自1994年2月到1995年7月期间，针对恒春半岛的三种火珊瑚(型态为板状、枝状、叉状)，比较彼此生殖季及相关生殖形质，以了解三种火珊瑚是否达到交配前的生殖隔离；并了解水母体在火珊瑚生活史中可能扮演的角色与功能。

In particular, it has remained unclear how oogamy arose from isogamy, a more simple form of sex in which ery similar reproductie cells take on different "mating types" but do not differentiate as distinct sperm and egg.

尤其是异配生殖如何由同配生殖转化而来，我们对此还懵懵懂懂。同配生殖是一种更为简单的结合形式，在此过程中，非常相似的生殖细胞不管三七二十一地就与不同的配子结合，都不分这些配子是&公&是&母&。

The research group has conducted several studies which associate exposure to pesticides with neonatal malformations if the genito-urinary system, such as undropped testicles and total fusion of the urethral folds.

研究组进行了几组研究了新生儿出生畸形泌尿生殖系统与杀虫剂暴露的关系，以泌尿生殖系统为例，如睾丸未降、尿生殖褶未闭等。

It was confirmed that facultative apomixes is existed in coffee species based on emasculating treatment, cyto-genetic observe and SSR marker detection.

细胞遗传学观察发现咖啡四倍体类型材料(2n=4x=44)的多胚和多胚苗中含有天然的单倍体胚和单倍体小苗(2n=2X=22)；去雄处理后，可见子房膨大，其中5份材料获得了果实和种子，初步说明无融合生殖现象的存在；对小粒种品种间杂交F1代个体的SSR分析，发现多胚苗中存在与母本图谱相同且不携带父本特异带的后代以及携带双亲特异带的有性后代，表明子代有仅来自母本的无融合生殖个体分离出来。 3 建立了咖啡无融合生殖的分子鉴别方法。

Colonial breeding provides birds several advantages, such as mobbing, information- centre, and enhancing feeding efficiency. However, it might also bring some disadvantages, such as increasing chances of attracting predators, intra-specific parasite, nest-parasite and infectious diseases.

行集体营巢具有如共同攻击天敌、资讯交换、增加群体觅食效益等好处，但同时也具有吸引天敌、种内托卵寄生、寄生虫及疾病传染等缺点，因此在不同大小的生殖群聚及生殖群聚内的不同巢位，对於其生殖表现都可能造成影响。

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。