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。

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 results showed that soil copper contamination did not significantly affect the leaf growth of Bermuda grass and its influence on root biomass and leaf chlorophyll content in Bermuda grass were also less than that in zoysiagrass.

结果表明：铜污染处理对狗牙根草坪的地上部分叶片生长量的影响不显著，对根系生长量和叶绿素含量的影响也明显小于结缕草；铜污染处理未引起冷季型草坪的叶绿素含量的下降，对高羊茅草坪的密度影响不显著，对叶片生长量的影响也明显小于草地早熟禾和多年生黑麦草，而草地早熟禾虽然叶片生长受到了严重的抑制，但根系生长未受到显著影响，也表现出了对土壤铜污染的一定的耐性。

And, by adding the self-adaptive temperature decay coefficient, made the SA algorithm could auto-tune the search criteria according the environment, avoid the deficiency of premature convergence.

针对微粒群优化算法在求解作业车间调度问题时存在的易早熟、搜索准确度差等缺点，在微粒群优化算法的基础上引入了模拟退火算法，从而使得算法同时具有全局搜索和跳出局部最优的能力，并且增加了对不可行解的优化，从而提高了算法的搜索效率；同时，在模拟退火算法中引入自适应温度衰变系数，使得SA算法能根据当前环境自动调整搜索条件，从而避免了微粒群优化算法易早熟的缺点。

Early maturity, round fruit with whiteness, white-green flesh, average fruit weight 1.2-2.0kg, 14-17% Brix sugar content, resistant to powdery mildew diseases, long shelf life and suitable for shipping.

早熟，果实圆球形，果皮洁白有透感，熟后不变黄，不落蒂，单果重1.2-2.0kg，含糖量14-17%，高可达19%。抗白粉病，耐储运，适合春保护地早熟优质栽培。

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。

The wholecharacteristic behavior of kentucky bluegrass is better than that of tall fescue and perennial ryegrass; while tall fescue is better than perennial ryegrass.

关联度分析结果表明，草地早熟禾的整体坪用性状表现要比高羊茅和多年生黑麦草好，而高羊茅比多年生草地早熟禾好。

The whole characteristic behavior of kentucky bluegrass is better than that of tall fescue and perennial ryegrass; while tall fescue is better than perennial ryegrass.""""

关联度分析结果表明，草地早熟禾的整体坪用性状表现要比高羊茅和多年生黑麦草好，而高羊茅比多年生草地早熟禾好。

Transformation of glucose oxidase gene from Aspergillus niger into Kentucky bluegrass Abstract Kentucky bluegrass Poa pratensis L.

黑曲霉葡萄糖氧化酶基因转化草地早熟禾的研究摘要草地早熟禾Poa pratensis L。

The published Kentucky bluegrass transformation system has many disadvantages including the diffculty of regeneration, high frequency of somaclonal, long-time transformation period and low efficiency of transformation.

现有的草地早熟禾遗传转化体系存在着植株再生困难、体细胞无性系变异发生频率高以及转化周期长、效率低等缺点，严重制约了早熟禾基因工程育种研究的发展。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。