杂种

At the same time according to the result of heterotic groups by SSR marker, the quality of five main heterotic groups were analyzed and appraised.

同时根据本实验室SSR分子标记划分杂种优势群的结果，对我国五大主要杂种优势群的品质进行分析利评价。

The principles of several DNA Molecular markers and their application on assessment of germplasm genetic diversity,fingerprinting construction,classification of heterotic groups and heterosis prediction for maize were reviewed.The present problems and prospective of molecular markers application in germplasm resource we...

介绍几种DNA分子标记的原理，综述了DNA分子标记在玉米种质遗传多样性鉴定、绘制指纹图谱、杂种优势类群划分和杂种优势预测等方面的应用，并探讨了在玉米种质研究中存在的问题和应用前景。

The rate of maize yield growth has being declining due to narrow genetic background and limited new heterotic patterns since 1970s.The role of tropical and subtropical maize germplasm in maize improvement was discussed in this paper.

但70年代以来我国玉米增产率呈下降趋势，玉米生产一直处于徘徊状态，其主要原因是国内种质资源匮乏，缺乏新的杂种优势群和杂种优势模式。

According to the cluster analysis of mortalit y and salt tolerance index,the tested accessions can be classified into f ive groups:sensi-tive,low tolerant ,moderately tolerant ,tolerant and high tolerant.Vitis champnii was high tolerant ;V.rupestris and V.a-murensis×V .labrusca were low tolerant.There were greatly differences of the tolerance am ong the varieties of V.riparia,of which many species were mode...

结果表明，不同种质的耐盐力从0.1%～0.4%不等；野生葡萄中的香槟尼的耐盐性好；沙地葡萄和山美杂种的耐盐性较差；河岸葡萄各品种间的耐盐性差异较大，其中，多数品种的耐盐力居中；河岸葡萄与沙地葡萄、冬葡萄的杂种后代的耐盐性也有不同程度的差异性；我国广泛作为砧木的贝达葡萄的耐盐性居中。

Cytological studies on the mode of gamete formation in F1 hybrid between E.intermedium and Yannong 15 were carried out.The r esults indicated that the first meio-?

以中间偃麦草与小麦烟农15的杂种F1及其5个自交和回交世代（F2、F3、BC1、BC2、BC3）为材料，对杂种F 1配子形成途径的细胞学特点进行了研究。

The result showed that the oestrous synchronization bring about a strcking effect in Hui goat treated with vagina sponge bolt and CLO, superovulated with 6.0 mg FSH combine CLO was valid in Hexi Fine wool goat , and had higher birthrate.

结果表明：用阴道海绵栓结合氯前列稀醇法对河西绒山羊及其杂种的发情效果明显；用FSH剂量6mg/只结合氯前列稀醇对河西绒山羊超数排卵的效果理想，移植后杂种河西绒山羊的妊娠率、产羔率较高。

Mayr also introduced the biological species concept that defined a species as a group of interbreeding or potentially interbreeding populations that were reproductively isolated from all other populations.

迈尔还提出了生物学的物种概念，定义物种为一个杂种繁殖的群体（或潜在地杂种繁殖的群体），与所有其它的种群在生殖上隔离。

Somatic hybrids grew weakly and took roots hard. By continuous subculture to facilitate to take roots using rhizogenic medium, the regenerants was transplanted on the cropland and backcrossed using cultivar wheat pollen.

体细胞杂种生长势差，生根困难，通过不断地使用生根培养基促进生根，然后移栽到大田中，利用不同播期的小麦花粉回交杂种，获得回交后代。

Chromosome observation of the male sterile line and fertile line, parents of hybrid combination and F1 indicated that the chromosome number of the male sterile line is the same as that of fertile line 2n=2x=24; Pollen parent (Tagetes putula PHBO029) is tetraploid 2n=4x=48; the F1 is triploid 2n=3x=36 with hybrid vigor.

通过对不育系、正常可育系以及杂交组合父母本、子一代的染色体数目观察发现：万寿菊雄性不育系的染色体数目与正常可育系相同，均为2n=2x=24；孔雀草PHBO029为四倍体2n=4x=48，它与万寿菊不育系杂交、其杂种为具有杂种优势的三倍体2n=3x=36。

The ash green leaf and stem , long spike and red unfull grain from triticale are expressed in interspecific hybrid F1, which are regard as typical traits of identifying hybrids.

六倍体小黑麦的灰绿色叶片或茎秆、穗长长和红色不饱满的籽粒在杂种F1代显现，可作为鉴别真假杂种的典型性状。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。