杂种的

Since curly leaf hybrid could be recognized at early stage,and displayedobvious dwarfness,choosing"Zha′ai 76"as paternal parent not only raised thehybrid-selecting efficiency from the pollinated progenies,but also raised thebreeding efficiency of apomctc dwarf roostock of apple.

鉴别宽叶型杂种较难、需时较长(2-3年生时)并需与染色体倍性鉴定法相结合，因其形态变化较小而生长势又与平邑甜茶无融合生殖苗无明显差异；鉴别光叶型杂种因父本染色体组的影响加大而从形态上容易些，但也需过氧化物同工酶法或染色体倍性鉴定法相配合；皱叶型杂种因在苗期刚出1-2片真叶时就表现明显的标志性状、能从叶片形态上准确鉴别出来，毋须染色体倍性鉴定等复杂方法；因皱叶型杂种能早期鉴别，又表现明显的矮生性，因而选用"扎矮76"做父本不仅大大提高了平邑甜茶授粉后代中选择杂种的效率，而且提高了苹果无融合生殖型实生矮砧育种的效率。

We obtained several hybrid individuals from a cross, Locusta migratoria migratoria L.

根据我们所观察的几个杂种个体的成熟分裂，在杂种的染色体结构差別中可能有一逆位区存在。

In order to clarify the rules of POD isoenzyme in the hazelnut, identify their blood relations between female, male and filial generations and select the superior parents for cross-breeding, we have studied the characteristics of peroxidase isoenzyme which are distributed in the 34 hazelnut varieties or lines by polyarclamide gel electrophoresis, The results showed that:POD isoenzymes of Corylus heterophylla Fisch, Corylus avellana L, and the hybrid of Corylus heterophylla Fisch × Corylus avellana L had obvious difference; some hybrids had lost P10 spectrum band of parents; the enzyme spectrum of 32 hybrid hazelnuts produced 'new hybrid spectrum bands'that could be considered as a mean to identify hybrids.

为了阐明过氧化物同工酶在榛品种中的分布规律，探讨平榛、欧榛及其杂种榛之间的亲缘关系，选育优势杂交亲本，本试验采用聚丙烯酰胺凝胶垂直电泳，研究了34个榛品种成熟叶过氧化物酶同工酶酶谱特征，结果表明：平榛、欧榛及其平欧杂种榛品种间酶谱具有较大差异；有的杂种品种遗失了父母本共有谱带P10；32个平欧杂种榛品种出现了双亲所不具有的新酶带，可作为鉴别杂种的一条途径。

Herbacium were isobilateral leaves, and those of G. hirsutum and C. barbadense were dorsiventral leaves. The reciprocal F〓 of cross G. arboreum×G. herbacium were also isobilateral leaves, while reciprocal F〓 cross of G. hirsutum×G. barbadense were also dorsiventral leaves. The quadrispecific hybrids F〓 were isobilateral leaves, regardless of their cytoplasms. The structures of the leaf stalks and the stems were analogous to each other among the four cultivated cotton species except their diameters varied with species.

四个栽培棉种及其种间杂种F〓的形态学和细胞遗传学观察四个栽培棉种的植株、叶片、茎杆以及花器等器官都有明显的差异；叶片、茎杆以及叶柄的横切面结构观察结果表明，两个二倍体栽培棉种的叶片横切面构造为等面叶，两个四倍体栽培棉种却均为背腹叶；F〓正反交的叶片也为等面叶，F〓正反交F〓仍为背腹叶，而它们的四元杂交种均为等面叶；四个栽培棉种的叶柄和茎的横切面结构基本一致，只是直径形状和和维管束多少的不同，四元杂种的叶柄和茎的横切面结构的差异不明显。

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。

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。

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 not only is our country hybrid rice research founder, also is the our country hybrid rice research chief designer and the most main leaders in a scholarly field. In 1986 he proposed the hybrid rice breeding from three is the law to two is the law to one is the law and uses three development phases from the variety to the subspecies to 远缘杂种 the superiority the strategic tentative plan, this tentative plan has become the domestic and foreign recognitions hybrid rice breeding the guiding ideology.

他不仅是我国杂交水稻研究的开创者，也是我国杂交水稻研究的总设计师和最主要的学术带头人。1986年他提出杂交水稻育种由三系法到两系法到一系法和从品种间到亚种间到远缘杂种优势利用三个发展阶段的战略设想，这一设想已成为国内外公认杂交水稻育种的指导思想。1987年两系法杂交水稻技术被列为国家&863&计划的重点课题。

Aimed at the arising problems such as the cross-incompatibility and hybrid's sterility during distant hybridization of fruit trees, effects of different treatments on cross-compatibility of distant hybridization in stone fruits were studied based on the former studies, then physiological and biochemical changes during hybridization between plum and apricot were primarily discussed, and rescue and culture system of hybrids' embryos were also conducted, further the genetic variation and principle between the hybrids and their parents were analyzed and methods of identification of hybrids were established.

针对果树远缘杂交过程中存在的杂交不亲和性及杂种不育性等问题，在前人研究的基础上，研究了不同处理对核果类果树远缘杂交亲和性的效应，并探讨了李、杏属间杂交过程中发生的生理生化变化以及花粉与柱头的互作，建立了李、杏属间远缘杂种的胚培养技术体系，建立了杂种鉴定检测方法，并分析了杂种后代与其父母本之间的遗传变异及规律，最终将一批远缘杂交新种质定植于大田，同时对自然界存在的杏梅种质资源进行了RAPD分析。

Compared with Zhongza29, yields of super okra leaf and okra leaf hybrids were obviously lower, but semi-Okra leaf hybrids was 1.16% higher in yield of seed cotton and 2.06% in yield of lint cotton, and 10 days earlier in maturation. Semi-Okra leaf cotton hybrid, CLA 17 ZR4, which was made by super Okra leaf sterile line and Zheda strong restorer line, had a 13 % higher yield over CK.

测定发现，超鸡脚叶、鸡脚叶、中鸡脚叶、大鸡脚叶和正常叶5类杂种的生育期依次随叶面积系数增加而延长，中鸡脚叶杂种因具有适中的生育期和叶面积系数，产量和光合作用性状的综合表现最好。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。