遗传性状

The progress of research on transferring elite genes from non-AA genome wild rice into Oryza sativa through interspecific hubridization are in three respects, that is, breeding monosomic alien addition lines, constructing introgression lines and analyzing the heredity of the characters and mapping the relative genes.

利用种间有性杂交向栽培稻转移非AA组野生稻有利基因的研究在三个方面取得进展，即单体异附加系的培育、渗入系的建立以及有利性状的遗传及基因定位。

The character of flower colour and high nicotine conversion inherited steadily,the average nicotine content of their offsprings decreased,while nornicotine content increased significantly.

通过对发现的5株白肋烟B37花色突变株后代的连续观察与研究，结果表明，5株白花突变株当代均为高烟碱转化株；随着世代的增加，白花后代群体花色遗传稳定，高转化率性状更趋于纯合；烟株群体的平均烟碱含量明显下降，降烟碱则明显上升，烟株群体生物碱表现为以降烟碱为主。

RFLP genetic linkage map of wheat recombinant inbred lines derived from W7984 Opata,was used to study QTL of 33 traits associated with water use efficiency.Compared with QTL map of 7 group homeologues chromosomes,the results were showed as follows:nearby the centromeric region of 1A and 1B chromosome,the gene cluster of controlling photosynthetic and root traits were located.

我们利用W7984 Opata重组近交系的RFLP作图群体，对33个与小麦水分利用效率有关的性状进行了QTL遗传图谱比较分析，结果显明：在第一部分同源群染色体（1A，1B）上的着丝粒周围，分布有控制光合作用和根系特性的基因簇。

XZ-131, the Strain Z-25 , which yields high activity protopectinase, was screened out.

经筛选确定高产诱变菌株Z-25，经传代培养，高产性状稳定遗传。

These results would be useful for spreading Pyrus genus resources and marker-assisted selection for genetic improvement in Pyrus.

梨树遗传连锁图谱构建和农艺性状QTLs的定位对于拓展梨树的基因资源，促进梨树分子辅助育种有着重要的意义。

China was one of Pyrus genus provenances,Chinese pear played an important role in fruit production.Genetic linkage map of pearPyrus L.

我国是世界梨属植物的起源中心之一，梨树的栽培面积和产量均居世界首位，丰富的种质资源对于定位和克隆一些重要性状的基因及梨树分子遗传育种和种质改良具有重要的意义。

The mechanism of triploid seedlessness, evaluation approaches of triploid grapes and embryo rescue technique are also discussed. Seven newly bred triploid seedless cultivars in the world are briefly described such as Yileyi, King Dela, Honey Seedless, Kai Mi...

简要介绍了国内外育成的7个三倍体无核葡萄新品种尾玲、戴拉王、蜜无核、美嶺、夏黑、无核早红和马格拉契的特征特性，并讨论了三倍体无核葡萄育种存在问题和未来的研究重点如杂交亲本的选择、三倍体杂合胚的发育特点和无核性状的遗传规律等。

In this study, based on establishment of stable and high efficient transfergenic receptor system with supersweet maize callus, the multiple insect-resistant genes were successfully co-transformed into a elite inbred line 1132 and a variety using particle bombardment and overy microinjection, and the transgenic integration, expression and inheritance were studied by means of target character and molecular biology method.

本研究在建立高效稳定基因转化受体系统的基础上，利用基因枪和子房注射两种方法将多个抗虫基因成功转化抗性较差的超甜玉米自交系及其品种，并从分子水平和目标性状上研究外源基因的转入、整合、表达与遗传规律。

It detected twenty-one of plant height, thirty QTLs of ear height, seven QTLs of leaf area, and sixteen QTLs of number of tasser branch.The two SSILs could be used to identify and map QTLs, to study inheritance of QTLs and to pyramid of QTLs, et al. Those also provided valuable materials for constructing sub-NILs to fine map and clone QTLs.

本研究所构建的两个SSIL群体，可用于数量性状QTLs的鉴定与定位、QTLs的遗传研究以及QTLs的聚合等，也为进一步构建导入片段内的亚等位基因系开展QTL的精细定位和QTLs的克隆提供了宝贵的材料。

Methods 410 asthmatic children were investigated mite skin prick tests,and 3 asthmatic families were examined common allergy SPTs and TIgE.

方法调查410例哮喘儿童的螨皮试情况，并对三个哮喘家系进行常见过敏原皮试和总IgE测定，并对该性状与D11S533作遗传连锁分析。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。