种性状

The peak of dry matter production rate of density-tolerant variety LiaoDan 565 appeared at tasseling-milk stage, thin density variety DanYu 39 appeared from Tuba mouth stage to tasseling stages, which earlier than density-tolerant variety.

这一差异导致稀植品种由于前期徒长、经济系数下降而减产；相反密植品种由于干物质的运输与贮藏相对协调而高产。5、在密植育种中，很多性状在高低两种种植密度下的遗传特性存在较大差异。

Selecting identification index of low-potassium tolerance The correlation between the grain weight per ear stress index and sensitive character stress index is appraised in detail by the numbers based on the principle of highly actuating, simply manipulating, early identification and saving field.

根据穗部敏感性状和穗粒重之间胁迫指数的关系，可以分为不敏感和敏感两类，敏感类型有穗粒数、百粒重、穗轴重三种，各类型存在明显差别。

Polymorphisms in ESRa gene and association with egg production traits The SSCP detection of 5" flanking regulation region and intronl in ESRa gene showed that two genotypes were detected in 5"flanking regulation region of blue eggshell chicken.

ESRa基因多态性与产蛋性状关系 ESRa基因5侧翼调控区和内含子1区经PCR-SSCP检测，发现绿壳蛋鸡5例翼调控区有两种基因型，两等位基因C的频率为0.86，D的频率为0.14。

Polymorphisms in FSHB gene and association with egg production traits The SSCP detection of PCR products showed that FSHβpro site was polymorphismic in two population. Six nucleotide variation at G-494A, T-470A, A-464G,-450A insertion, A-405G and A-361G,were identified in promotor region of TaiHu chicken;Three nucleotide variation at A-464G,-450A insertion, A-405G,were identified in promotor region of blue eggshell chicken,three genotype.

FSHβ基因多态性与产蛋性状关系 FSHβ基因5'调控区和外显子3经PCR-SSCP检测发现，两个鸡群在FSHβpro位点都有多态，太湖鸡发现6处碱基差异，分别是：G-494A，T-470A，A-464G，-450插入碱基A，A-405G，A-361G；而绿壳蛋鸡在该位点有3处突变，分别是A-464G，-450插入碱基A，A-405G，有3种基因型。

This paper pointed out that the essential of geoherbs is continuers quantities variation at population level, geoherb's populations are different in gene frequency with the others'; geohersm are quantitative trait loci controlled by multi-gene or combination with multiple-gene and major gene at individual level.

指出道地性的遗传本质在居群水平通常是个量变的过程，它与种内其他非道地药材区别主要表现为居群内基因型频率的改变；在个体水平表现为微效多基因控制的数量遗传，或是微效多基因和主基因联合控制的数量性状。

It was typically indirect effect that the following variations induced in the progenies of endosperms implanted by heavy ion beams were discovered. 1 In comparison with control, there were very high differences in biological trait, anti-oxidation enzyme activity, MDA content and protein content, chromosome aberration rate and micro-nucleus rate in M1 generation. 2 Shorter stem variants and purple stem mutants were analyzed by RAPD and AFLP. The analytic results showed that the sequences of their DNA were changed, so those variations were not physiological damage only. And there were differences among M2 generation plants of the same sort of variants or mutants, it was indicated that M2 generation may be in disjunction.

M1代的生物学性状、幼苗的抗氧化酶活性、MDA含量、蛋白质含量和染色体畸变率及微核率等发生了较大的变化。2）对其矮杆变异株和紫色茎杆突变体（M2）做RAPD和AFLP分子鉴定等研究，结果显示了矮杆变异体和紫色茎杆突变体的DNA序列发生了改变，而非仅仅产生生理损伤；同一种变异体或突变体，在M2代单株间也存在着明显的差异，表明它们可能还处于分离状态。

Species in the genus Thinopyrum are important wild relatives for wheat improvement. They possess many desirable traits such as drought, cold and salt tolerance, long spikes and more florets, high protein concentration. It has also been found that some species are the source of resistance genes for rust and powdery mildew, and especially, the source of resistance to wheat streak mosaic virus and barley yellow dwarf virus .

偃麦草属植物是小麦遗传改良中的重要野生近缘种，蕴含抗寒、抗旱、耐盐碱及长穗多花、籽粒蛋白质含量高等优良性状，同时又是小麦锈病和白粉病的重要抗源，特别是在小麦条纹花叶病和大麦黄矮病等病毒病的抗病育种中发挥了重要作用。

The range of evolutionary theories during "the eclipse of Darwinism" included forms of "saltationism" in which new species were thought to arise through "jumps" rather than gradual adaptation, forms of orthogenesis claiming that species had an inherent tendency to change in a particular direction, and forms of neo-Lamarckism in which inheritance of acquired characteristics led to progress.

在&达尔文主义衰落时期&，进化理论包括各种形式的&骤变说&，认为新种是通过&跳跃&而不是通过逐渐适应产生的；也包括各种形式的直生论，声称物种有着内在的、向某一特定方向变化的趋势；还包括各种形式的新拉马克主义，认为获得性状遗传导致进步。

The mutation of anther morphology might come from akind of structure evolution suiting for inhibiting selfing.

推测花药形态的这种变异可能是防止自交促进杂交的一种进化结构上的适应性状。

Sutai pig is a new breed with high production performance. Eight genes with 15 loci were studied in this paper, using PCR-RFLPs for the purpose of retainment and improvement of production performance. The association between polymorphisms of candidate genes and carcass traits and meat quality (marbling score, pH1, intramuscular fat, tenderness, water holding capacity and meat color values such as light, saturation, hue) were also analysed.

苏太猪是我国培育的优良猪种，为了保持和提高苏太猪的生产性能，本文用PCR-RFLP法对影响胴体、肉质性状的8个主要功能基因共15个位点进行了检测，以期为苏太猪今后的育种提供理论根据。

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。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。