种质的

This paper summarized the survey, collection, storage, research and utilization of forage germplasm resource; its current status, existing problems and suggestions about subsequent progress were discussed, including superior and rare germplasm collection, forage genetic diversity research, biotechnology utilization in forage germplasm innovation, duration of germplasm storage, natural evolution speed, storage techniques of short-life seeds, super gene exploration and function, biological base of species and population conservation.

为此，论述了我国牧草种质资源调查、收集、保存、研究和利用的现状，存在问题及对今后发展的建议，提出今后应加强优良和珍稀牧草种质的搜集、生态型及遗传多样性的研究和利用、生物技术在优良牧草种质创新的应用、种质保存的时效性和野生状态下牧草遗传变异与进化的速率、短寿命牧草种子保存技术、优良基因的发掘和功能研究以及利用平台的构建、物种或种群保护的生物学基础研究7个重点领域的研究。

The introduction and utilization of CIMMYT maize germplasm in general whould enhance resistance resources to head smut Heilongjiang province.

CIMMYT种质的引进总体上有利于提高黑龙江省种质资源对丝黑穗病的抗性。

It is necessary to study on the core collection for the development of the germlasm resources of medicinal plants.

提出对核心种质的研究是药用植物种质资源发展的必然趋势。

According to the basic information such as origin, agricultural characters of different germplasm, 444 representative domestic cultivars, belonging to 13 species or varieties, 7 genus of cucurbitaceae respectively, were selected as experimental materials to identify their resistance to root-knot nematode using the inoculation method of infected soil. Results showed the resistance distribution of different cucurbit crops.

根据不同种质的来源地、农艺性状等背景信息，从国家蔬菜种质资源中期库中选取具代表性的444份主要瓜类作物地方品种，分属葫芦科7个属的13个种或变种，采用病土接种法进行苗期根结线虫抗性鉴定，得出了不同葫芦科作物对南方根结线虫的抗性分布范围。

In this research, many indices of drought resistance during germination stage and seedling stage were chosed to evaluate comprehensively the drought resistance of 20 Dactylis glomerata L. germplasm from abroad.

以国外引进的20份野生鸭茅种质资源为研究材料，通过萌芽期PEG模拟干旱试验、幼苗期温室盆栽试验，系统测定了干旱胁迫下鸭茅种质萌芽期种子萌发抗旱指数、胚根、胚芽，幼苗期幼苗株高、根冠比、叶片水分饱和亏缺、质膜透性、脯氨酸含量等形态和生理指标，全面分析了这些指标的变化规律，对所引进的20份鸭茅种质的抗旱性进行了综合评价。

The results revealed that there were 5 genetically homogeneous accessions having only one hordein spectrum biotype and 15 genetically heterogeneous accessions having 2~6 hordeins spectrum biotypes.

为了给大麦种质的保存和更新提供依据，采用醇溶蛋白电泳技术对20份大麦种质（每一份种质各有两个繁殖年份不同的供试材料）进行了遗传完整性分析。

To learn the information about the genetic background of the cultivation and wild germplasms of Platycodon grandiflorum assisting of its breeding and studies on genuine characteristics, the genetic diversity of 92 samples （including 20 cultivation and 3 wild germplasms, and 5 genetic materials） were analyzed by RAPD markers.

为了解桔梗栽培种质、野生种质的遗传背景，为桔梗育种及道地药材研究提供依据，采用RAPD方法分析了桔梗20份栽培种质、3份野生种种质及5份遗传材料共92个样品的遗传多样性。

The resistances to head smut of some CIMMYT maize populations were identified by the method of artificial inoculation under field condition to direct the introduction and utilization of CIMMYT maize germplasm in China.

本文采用田间人工接种方法研究了部分CIMMYT玉米种质及其测交组合对丝黑穗病的抗性，为CIMMYT种质的引进和利用提供参考。

The findings indicated that, the Japonica rice RVA profile characteristic is the concurrently Indica rice nature with the glutinous RVA profile characteristic continuously change body, assumes 5 kind of characteristics class groups, the few idioplasms has the glutinous starch RVA profile characteristic, also has some idioplasms for the starch RVA profile characteristic of Indica rice, the partial idioplasms have the high quality RVA profile characteristic, namely setback for the negative value, the overwhelming majority idioplasm RVA profile characteristic approx

研究结果表明，粳稻的RVA谱特征是兼具籼性与糯性RVA谱特征的连续变化体，呈5种特征类群，少量种质具有糯性淀粉RVA谱特征，即还有一些种质表现出为籼性淀粉RVA谱特征，部分种质具有优质的RVA谱特征，即消减为负值，绝大多数种质的RVA谱特征(约占样本数的85%)，其曲线的显著特征为消减值在250-1000cp。籼稻的RVA谱特征的分化亦呈现为多态性，主要表现为峰值粘度、最终粘度与消减值的分异性，在籼稻种质材料中主体RVA谱类型的特征表现为消减值在1000-2000cp间。特异的分化出3种类型，第一类表现为峰值粘度与消减值均在2000cp

In the major progenitors in wheat breeding, the landraces showed distinct genetic difference.

2在我国小麦骨干亲本中，来自我国的地方品种与国外种质及包含国外种质的育成品种，具有明显的遗传差异。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。