性早熟

The anti-oxidant enzymes including SOD, POD and CAT and MDA, which is one of the oxidant products, and IAA and ABA, which were relative to earliness but not to decrepitation of the short-season upland cotton, were studied.

为解决棉花育种中普遍存在的早熟早衰问题，研究了与短季棉早熟不早衰有关的抗氧化系统酶包括超氧化物岐化酶SOD、过氧化物酶POD 和过氧化氢酶CAT，氧化产物之一丙二醛性MDA，以及生长素IAA 和脱落酸ABA在不同类型短季棉品种中不同生长发育时期的变化规律和遗传特性。

Precocious Shanxi strain ( E.tenella SX010323) was developed via the method founded by Jeffers, and the corresponding endogenous development stages, pathogenicity, reproductive potential, immunogenicity and stability were observed and detected.

运用Jeffers建立的早熟系选育方法对柔嫩艾美耳球虫山西株( E.tenella SX010323)进行早熟选育，并对其内生发育、致病性、繁殖力、免疫原性、稳定性进行观察和检测。

The experimental results showed that the com- bining ability was different among characters of different parents.Early maturity of cucumber was controlled by nonadditive effect.

试验表明：不同亲本间各性状的配合力有差异；早熟性以非加性遗传为主，狭义遗传力较低，总产量、雌花节率以加性遗传为主；群体雌花开放期主要取决于基因型。

Mathematical model analysis of wheatcultvars ecotypes evolution, through the 2005-2006 study of five wheat-522 samplesof wheat Ecological Survey, take hypothesis testing statistical methods to the analysisof the regional differences were significant problems 1 while wheat cultvars, and late-maturing varieties of early maturing varietiescan not meet the needs of production, gradually been eliminated, while early varietiesto be preserved.

本论文研究主要结论有： 1、在品种更替过程中，早熟品种和晚熟品种所占比例分别由80％和30％降低为零，两种生态型逐步遭到了淘汰，而中早熟品种得到了保留，由1978年的零分布增加到2005年的46％。 2、偏春性和冬性品种分别1988年至1996年和1991年至1993年和的变化较大，其动态变化度分别为1和0.66。

For some kinds of vegetables and pasturages, the contents of some heavy metals surpass the relevant quality standards, so when some crops were planted on the substrates, the uneatable species should be selected preferably and if some kinds of vegetables and pasturages must be adopted, the output could not be provided to mankind and also not be used in farming, in order to avoid harming peoples'health.5 The expediency evaluation model of pioneer plant on substrates was established and some plants were studied. The results show that the expediency evaluation of pioneer plants were respectively that clover was expedient to substrate 1, juniper, cotton and fescue were expedient to substrate 2 and juniper, annual bluegrass, fescue, cotton and clover were expedient to substrate 3.6 Some indexes to evaluate the capability of the phytoremediation on heavy metals and the comprehension about hyperaccumulator were put forward.

有多种植物的重金属含量超过了相应的国家标准，因此在基质上种植植物时，尽量选择非食用性植物品种，即使种植了蔬菜和牧草等植物，也不应将收获后的产品供人类食用或用于畜牧生产，以免危害人体健康。5建立和研究了复垦基质先锋植物的适宜性评价模型，结果表明，不同基质中适宜的先锋植物分别如下：基质1为苜蓿，基质2为桧柏、棉花和高羊茅，基质3为桧柏、早熟禾、高羊茅、棉花和苜蓿。6探讨了评价重金属元素植物修复能力的指标体系和"超富集植物"的概念。

The city green turf grasses are under seriously stress for the shading of tall buildings, trees and shrubs, and lead to the recession of turf grass, so the author studied for this problem; Taking three cold-season sods as test material, including Festuca rubra Pernille、Poa pratensis Kentucky and Agrostis Regent. Effects of different concentrations of uniconazole (S3307) on shade-tolerance of three turf grasses under shading situation were studied by testing long-term growth and physiological characteristics of them.; After treated with S3307, the contents of chlorophyll and soluble sugar increased, plant height decreased, leaves width and thickness increased. All of these indicated that S3307 can evidently improve shade-tolerance of three turf grasses with different shade-tolerance, the optimal concentration of uniconazole is 100~200 mg/L; The results are very useful and meaningful for improving quality of turfgrasses under shading situation.

高大建筑物、乔木及灌木遮荫会使用于城市绿化的草坪草受到严重胁迫，造成草坪草衰退，针对这一难题进行了研究；以耐荫性不同的冷季型草坪草匍匐紫羊茅派尼、草地早熟禾肯塔基、匍匐翦股颖摄政王为试验材料，研究了不同浓度的外源激素稀效唑(Uniconazole， S3307)处理对3种遮荫草坪草生理及生长变化的长期调控作用；经稀效唑处理，3种草坪草叶片叶绿素含量和可溶性糖含量增高，植株株高变低，叶片变宽、变厚，不同耐荫性草坪草的耐荫能力均得到显著提高，最适的处理浓度范围100~200mg/L；这在生产实际中有重要应用价值，特别对提高受遮荫胁迫的草坪质量具有重要意义。

The stress resistance of common roof garden plants, e.g. Dahlia hybrida, Callistephus chinensis, Calendula officinalis and Chrysanthemum multicaule were determined by mensurating such index as chlorophyll content, electrolyte leakage, water content, Pro content, MDA content and dissoluble sugar content. The result indicates that Dahlia hybrida is the best, Callistephus chinensis next, Calendula officinalis and Chrysanthemum multicaule are weaker as to drought resistance;while in the experiment on coldness resistance, the ability to bear coldness ranks from the best to the worst is Poa annua, Festuca arundinacea and Trifolium.

对小丽花、矮翠菊、金盏菊与黄晶菊等常见城市绿化植物进行的抗逆性试验研究，测定了叶绿素含量、膜相对透性、相对含水量、脯氨酸含量、丙二醛含量、可溶性糖含量等指标，结果表明：在抗旱性试验中小丽花的耐受性最强，矮翠菊次之，金盏菊与黄晶菊的耐受性较弱：抗寒性试验中所选植物材料的耐受性次序分别是早熟禾强于高羊茅强于三叶草。

Through a relaxed selection of 10 passages, the precocious line showed genetically stable in its prepatent time, OPG, and as well as its pathogenicity.

对选育的早熟系进行放松选择传代10次，其潜隐期、OPG、致病性均保持了早熟系的特征。

The introduction adaptation of Kentucky bluegrass varieties in Beijing is summarized. Indices including growing habit, turf quality, turf duration, winter and summer survival, disease resistance were analyzed.

该文根据3a多的试验，分析了草地早熟禾的生长特征和特性，以及形成草坪的质量、持续年限、越冬越夏性和抗病性等结果表明，草地早熟禾各品种差异十分明显，大多数品种比较适宜北京种植。

Q: How helpful is a random measurement of FSH (follicle-stimulating hormone) in a female child who is thought to have precocious puberty?

对于怀疑性早熟的女孩，随机测定其FSH有什么帮助么？

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。