性早熟

In this study, the male sterile female fertile mutants-S903Bwas the new one in spring soybean with relatively short growth period. It canbe used in soybean recurrent selection program and has its potential in soybeanbreeding. Anyhow, it is essential to take allelism tests if S903B mutant wasallelism with 〓 to 〓.

本研究所发现和研究的S903B雄性不育系，为我国南方春大豆中第一个较早熟的隐性核不育大豆基因型，表现为雄性不育、雌性可育，在大豆的轮回选择育种中应有巨大的利用潜力。S903B突变体是否与〓-〓等位，还需进行等位性测验。

In this research, suitable content of Potassium can improve drought-resistance of bluegrass cultivars.

在本试验中，适宜的钾素营养能提高早熟禾植株的抗旱性。

The computer simulation and the comparison with the similar algorithms show that its constringency is much better and its prematurity is infrequent.

通过计算机仿真分析和与同类算法的比较，此算法收敛速度快，不易陷入早熟，具有很强的鲁棒性和实用性。

Theywere temperature sensitivity,physiological vernalization requirement,photoperiodsensitivity,intrinsic earliness and filling duration(growing degree-day),reflecting thegenetic characters of different cultivars in thermal effectiveness,vernalization,photoperiod response,minimum flowering time and filling duration.

阶段发育模型引入温度敏感性、生理春化时间、光周期敏感性、基本早熟性和灌浆持续期五个遗传参数，分别体现了不同品种小麦在热效应、春化作用、光周期反应、最早开花时间以及灌浆期长短这五个方面的遗传特性。

The result shows that the method is effective in improving the computational convergence and overcoming the premature of simple genetic algorithm in some degree.

结果表明，自适应遗传算法在保持简单遗传算法优点的同时，有效地提高了算法的收敛性，并在一定程度上克服了简单遗传算法的早熟问题。

Individuate new melon variety, original unique decent contour.

项目简介：个性化，早熟，坐果性好厚皮甜瓜新品种。

The resistance to disease of transgenic plants were tested by inoculating leaves with Puccinia coronata var.coronata cummins.

对所得到的转基因草地早熟禾植株人工接种冠锈菌夏孢子进行抗病性鉴定并测定了抗病性相关指标。

The other two groups are longan and'Longli, a special germplasm', which is a natural hybrid of litchi and longan. The results from RAPD analysis also showed that longan might be the maternal parent and the extremely early maturing litchi types be the paternal parent since'Longli'is closer to longan in the taxnomy. This information would be useful in the distant crossing breeding to fruit of Sapindaceae family.

根据RAPD分析揭示的多态性水平和聚类分析结果及马贵荔×焦核三月红的F〓杂种群体表现出的广泛分离和父本特有RAPD位点分离方式的偏态性，本研究对荔枝的分类学提出新见解，认为广东的三月红、云南的褐毛荔等极早熟荔枝类型（在广州于5月20目前成熟）在分类上可自成一类，其地位应提高到&变种&一级。

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。

300 pieces of idioplasm resources of the Tibetan edible cultivation spring naked barley is identified for characteristic of shape, agronomic characters, rust-resisting property and grain thick protein,β-grape polymerization sugar and Vitamin E and so on from the Tibetan different region, which are analysed result in, for one thing, multiplicity of Tibetan spring naked barley is quite rich for the variation of the awn, leaves and the grain color, and multiple property are highest; Secondly, it has some fine hereditary characters of early maturation, big spike, many grains, many arrises and the strong anti-rust quality; Thirdly, genetic potential which is used possibly is enormous for characteristic of dense spike, exiguous spike, naked grain , the hook awn, short stem, the anti-rust and so on ; Fourthly, thick protein,β-grape polymerization sugar and Vitamin E of grains are rather difference to environmental condition of the various areas.

从西藏各地征集的300余份食用栽培春青稞种质资源，从形态特征、农艺性状、抗锈性和籽粒粗蛋白、β-葡聚糖含量、维生素E等特征特性鉴定、评价。分析结果认为：（1）西藏春青稞多样性极为丰富，如芒、稃和籽粒颜色，具有变异最为丰富，多样性最高的特点；（2）具有早熟、大穗、多粒、棱型多，以及抗锈性强等和耐各种不良环境因素的优良遗传性状；（3）具有密穗、稀穗、裸粒、钩芒、矮生、抗锈等可利用基因潜力巨大等特色；（4）籽粒粗蛋白、β-葡聚糖、维生素E等成份因各地区环境条件不同差异较大。

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。