种性状

The culm length, panicle length, spikelets per panicle and panicle exsertion were evaluated by using F2:3 population including 200 lines, derived from a cross of indica and japonica Milyang23/Jileng1 under five different environments of Beijing (natural normal growing environment), Kunming (natural low temperature condition), Gongzhuling of China and Chuncheon of Korea (natural normal growing environment and cold water irrigation), and QTLs of these traits were analysed by using SSR markers.

以籼粳交密阳23/吉冷1号200个F2：3家系作为作图群体，在北京、昆明、公主岭、韩国春川（正常生长环境和冷水胁迫）等5种不同生长环境下进行了水稻秆长、穗长、穗粒数和穗抽出度等主要农艺性状的异地鉴定，并利用SSR标记进行了上述农艺性状的QTL分析。

In addition, the accuracy of QTL mapping depends on the effect of putative quantitative trait loci and the value of heritability.

另外，性状遗传力和QTL效应的大小对QTL定位的准确度也有直接的影响，随着性状遗传力QTL效应的增大，两种方法QTL定位的效率均有不同程度的提高。

A modified approach of multiple trait composite interval mapping of quantitative trait loci is proposed in this paper.

本文给出了多性状数量性状基因座复合区间定位法的一种改进方法。

As a co-agent, methyl alcohol can not affect wheat yield and quality obviously when it is sprayed singly.

甲醇作为一种助剂单独喷施时对小麦的产量性状和品质性状影响不明显，当与2.4-D结合进行叶面喷施时，产量可增加1.36％，最高为1.9％。

And it also showed that the inheritance of the growth-rate and pathogenicity to cotton seedlings of XC-6 could not be inherited steadily in zoospore progenies and oospore progeny, but the colony morphology and homothallic character of XC-6 could inherited steadily in both asexual and sexual progenies, which suggested that the inheritance and variation of the above characters might be related to long-selfing and hybridization in species.

同时，XC-6生长速率、对棉苗的致病力、菌落形态及同宗配合遗传和变异特性研究表明，其生长速率和对棉苗的致病力性状在单游动孢子后代和自交后代均不能稳定遗传，但菌落形态和同宗配合特性在单游动孢子后代和自交后代均能稳定遗传，提示上述性状在单游动孢子后代和自交后代的遗传和变异特性可能与菌株长期自交和种内杂交有关。

And it also showed that the inheritance of the growth-rate and pathogenicity to cotton seedlings of XC-6 could not be inherited steadily in zoospore progenies and oospore progeny, but the colonyKey words: Phytophthora boehmeriae, Biological character, Inheritance

同时，XC-6生长速率、对棉苗的致病力、菌落形态及同宗配合遗传和变异特性研究表明，其生长速率和对棉苗的致病力性状在单游动孢子后代和自交后代均不能稳定遗传，但菌落形态和同宗配合特性在单游动孢子后代和自交后代均能稳定遗传，提示上述性状在单游动孢子后代和自交后代的遗传和变异特性可能与菌株长期自交和种内杂交有关。

However, the weedy rice has became an another special type for long time evolution and domestication, so its resistance is superexcellence than the cultivable rice, and also become a natural gene storeroom.

然而，经历漫长的自然进化和某种特定稻作环境的驯化，杂草稻已成为稻种资源的一个特殊类型，较野生稻而言，其特殊生物学性状和抗逆性等优良性状易于在育种中直接利用，是水稻品种改良的重要育种资源，同时也是稻种遗传进化研究的必备材料。杂草稻长期自然生长繁衍，其抗病、虫、寒、旱、盐碱等特性优于栽培稻，而且与栽培稻的亲缘关系相对接近，是一种改良栽培稻抗逆性的天然基因库。

Thus, if height is controlled by two genes, A and B, and tall and short forms are determined by dominant and recessive alleles respectively, then the cross Aabb × aaBB would give an F1 AaBb, containing both dominant genes for tallness.

假设，高度性状是由两个基因 A 和 B 共同控制，且高与矮两种表型分别为等位基因中的显性和隐性基因所决定，那么， Aabb × aaBB 杂交的结果是 F1代为 AaBb ，含有决定高性状的两个显性基因。

Comparing to the results of RAPD analysis and their phenotypic characters, the importance of partial phenotypic characters were affirmed in discriminating of similar species of Coccomyces.

通过RAPD分析的结果与表型性状的比较和分析，明确了部分表型性状在齿裂菌属近似种区分方面的重要性。

Department of Pharmacognosy, China Pharmaceutical University, Nanjing 210038 Abstract As a continuation of the previons two reports, 10 crude "Shanziwan" derived from the root and rhizoms of genus Ligularia were compared by microscopic study.

作者：张勉徐珞珊王峥涛赵显国徐国钧单位：中国药科大学生药学研究室(南京 210038)关键词：山紫菀类；橐吾属；性状和显微鉴别中草药991125摘要继前两报，继续对10种山紫菀类药材(基源为橐吾属 Ligularia 植物)的生药性状和显微鉴别特征进行报道。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。