生殖

According to the formation of the apomitic embryos, apomixis could be divided into three major types: diplospory, apospory and adventive embryony.

按其胚体发生的途径，无融合生殖可分为二倍体孢子生殖、无配子生殖和不定胚生殖三种类型。

It was suggested that the capacities of parthenogenesis and apogamy of rice were used to obtain stable lines in early hybrid generations.And several characteristics such as apomixis,cleistogamy,superior genes of qualities and resistance to disease and pest were combined and were used to search a new pathway of selecting high yield,superior quality and heteroresistance to diseases and pest,and lead to realize the purpose of fixing heterosis by apomixis.

利用水稻的孤雌生殖和无配子生殖能力，获得早世代稳定品系，建立快速育种方法，把无融合生殖特性与闭颖授粉、优质、抗性等特性结合探索高产优质多抗育种新途径，逐步实现利用无融合生殖固定杂种优势的目的。2。

In this paper,a list of apomitic species of Paspalum is given.The cytological and embryological bases,and the characters of apomixis are described.Advances in genetics and molecular biology of apomixis aye in Paspalum also reviewed.

对雀稗属无融合生殖的分布、无融合生殖相关的细胞学和胚胎学基础、无融合生殖的特点及其遗传学和分子生物学研究进展进行了综述。

The reproductive glands of male fishes when filled with this fluid.A plant that reproduces by or is reproduced by apomixis.

无配生殖植物，无融合生殖植物可进行无配生殖的植物或由无配生殖产生的植物

Results:The following were observed and measured:the location where the genitofemoral nerve coming out from the psoas major,the plane of the location the highest plane of the iliac crest,common iliac vessels branch plane,the distance between the ureter and the lateral part of the psoas major,the distance between the genitofemoral nerve and the lateral part of the psoas major,the distance between the genitofemoral nerve and the ureter,the location at the decussation of the genitofemoral nerve and the ureter.

结果：观测了生殖股神经穿出腰大肌的位置；在穿出点平面、髂嵴最高点平面、髂总血管分叉平面，输尿管距离腰大肌外侧缘的水平距离，生殖股神经距离腰大肌外侧缘的水平距离，生殖股神经与输尿管的水平距离；生殖股神经与输尿管交叉点与腰大肌外侧缘的水平距离，交叉点距离髂嵴最高点平面的垂直距离。

The journal scope covers gametogenesis, fertilization, early embryonic development, embryo-uterus interaction, reproductive development, pregnancy, uterine biology, endocrinology of reproduction, control of reproduction, reproductive immunology, neuroendocrinology, and veterinary and human reproductive medicine.

杂志内容覆盖配子发生，受精，胚胎早期发育，胚-子宫相互作用，生殖发育，妊娠，子宫生物学，生殖的内分泌学，生殖控制，生殖免疫学，神经内分泌学，以及脊椎动物和人类生殖医学。

Wang Jianchen Hao ZhimingSun Houen Huang Qunshan Laboratory of Reproductive Endocrine in Domestic Animals, Northwester Agricultural University, Shanxiyangling

西北农业大学家畜生殖内分泌研究室，西北农业大学家畜生殖内分泌研究室，西北农业大学家畜生殖内分泌研究室，西北农业大学家畜生殖内分泌研究室陕西杨陵，陕西杨陵，陕西杨陵，陕西杨陵

The apomictic research progress in plants is summarized, including the approaches of fixing heteroses, selecting and breeding of plant varieties and apomictic materials, embryology, genetics, apomictic characteristics and so on .

介绍了植物无融合生殖在选育无融合生殖品种及育种材料方面的成果；概述了植物无融合生殖在胚胎学、遗传学及生殖特性，杂种优势固定途径及无融合生殖材料选育途径等方面研究的现状和趋势。

There were generally reproductive growth in each age class ramets of Carex kirganica as well as that in Scirpus planiculmis. Furthermore, the more or less of the reproductive allocation was certain and that is the result of reproductive trade-off and the adaptation to their habitats.

长秆苔草和紧穗三棱草各龄级分株均进行有性生殖，并保持一定量的生殖分配大小，是适应生境的生殖策略权衡的结果。12个不同水分梯度生境芦苇生殖分配RA Ⅰ为5.82％～16.31％，生殖生长比率Rrg为10.68%~16.35%，2个生境毛芦苇RAI分别为9.09%和13.98%，生殖生长比率分别为22.07%和1 8.06%。

The purposes of this study were to:(1) compare the reproductive success and morphological variables of Blue-tailed Bee-eaters between solitary and colonial breeders and among different sizes of colony, and (2) examine if the nest location vs. reproductive success of Blue-tailed Bee-eaters fits the centre- periphery model.

所以本研究的目的在於(1)比较栗喉蜂虎在单独筑巢与集体营巢间、集体营巢中不同大小的生殖群聚间的生殖表现与生殖者形态上的差异；(2)探讨栗喉蜂虎在生殖群聚内巢位与生殖成功间的关系是否符合中央-边缘模式。

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。