种质

The authors proposed that heterochromatin change in genome might play an important role in balancing the germplasms between maize and its distant relatve after cross and parthenocarpy.

这种变异不仅存在于表型不稳定的早代孤雌系中，而且还存在于表型稳定的高代系中，造成这种变异的原因可能是因为远缘种质的引入影响到遗传平衡进而引起染色体发生结构重排并引起染色质的变化，这种变化与玉米染色体组中非同源染色体间存在的同源片段和因此造成的减数分裂过程中非同源染色体配对有着直接的关系。

Since 2001, Shanghai Fisheries University and Xinjiang Construction Group have jointly conducted a research and exploitation of Eltrix River special fish resources, and made the first breakthrough in artificial propagation and nursing of tench, perch and pike.

自2001年以来，上海水产大学与新疆生产建设兵团合作，进行额尔齐斯河流域特种鱼类的种质资源研究与开发利用工作，在国内率先突破了丁鱥、河鲈和白斑狗鱼的批量人工繁殖。

It is suggested that the in situ pistil transformation method can be used as a mutagenesis approach.

研究表明本文的转化方法可用于创建突变材料和新种质。

Cloth of fine texture, usually with a plaid, striped, or ''.

马德拉斯布一种质地良好的''。

The female parents are 4 choice [1] ness clones in Chinese fir primary orchard. The male parents are 3 polyanthus clones in the gene pool of old Chinese fir, the mixed pollen of these clones and all the clones in this gene pool. The testing woods were founded with 18 cross grouping which were obtained by the using of NCⅡ.

以经过子代测定的杉木初级种子园中的4个优良无性系为母本，老杉木种质资源库中的3个花芽较多的无性系及其混合花粉和种子园混合花粉为父本，采用测交系交配设计进行杂交制种，获得18个杂交组合并以此营建试验林。

This paper deals with the photosynthetic ability of the leafy germplasm and major gene plus polygene mixed inheritance model is applied to the genetic analysis of the leafy trait.

本研究着重研究了该种质的光合性能、利用前景，并运用主基因+多基因混合遗传模型分析了多叶性状的遗传规律。

For the first time in the world, and they could be precious materials used in further polyploidy breeding to develop new variety with high yield and high medicinal ingredient content.

本研究不仅创新了甘草属种质资源类型，并为开展多倍体育种、选育出产量高且药用成分含量高的优良品种奠定了物质和技术基础。

According to this paper, the use of P〓—IPT gene to improve wheat varieties that had the defect of leaf presenility was feasible. In this way, the potential yield of that wheat could be developed greatly and the new lines for wheat breeding could be produced.

根据本试验的研究结果，表明可以利用P〓-IPT基因对生产上有早衰缺陷的小麦品种进行遗传改良，以最大程度地发挥现存品种的生产潜力及为育种创造新种质。

ABSTRACT Laiwu Black is one of Chinese native pig breeds, which has excellent germplasm properties such as high prolificacy and good meat quality.

莱芜猪是我国优良的地方猪种资源之一，具有繁殖力高、肉质优良等宝贵种质特性。

ABSTRACT Laiwu Black is one of Chinese native pig breeds, which has excellent germplasm properties such as high prolificacy and good meat q...

莱芜猪是我国优良的地方猪种资源之一，具有繁殖力高、肉质优良等宝贵种质特性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。