种子

The distribution of seed rain is evenly in the inner forest while decreases sharply with the length to the parent trees on the purlieus, and it is influenced mostly by gravity and wind force.

林内种子雨分布比较均匀，林缘种子雨随距离增大迅速降低，重力和风力是影响种子雨散布的主要因素。

The results showed that the seed germination and stem apexes growth of the materials was decreased with the increase of NaCl concentration and PYM concentration and treating time.

结果表明：供试种子的萌发率和茎端组织的存活率随培养基中NaCl浓度的上升急剧下降，平阳霉素处理对茎端组织存活率的抑制明显大于对种子萌发率的影响，平阳霉素处理后存活的种子和茎端组织经NaCl胁迫筛选，筛选出耐NaCl胁迫力明显提高的存活苗，存活苗经无性繁殖，可以保持较高的耐NaCl能力。

A quick DNA extraction technique which was fitting for maize variety identification and establishing DNA fingerprinting pool was explored ,and the technique was well applied in the following tissues for DNA extraction : embryo, endosperm; radicel, coleoptile , hypocotyl from germinated 1～3 days material .

本实验探索了适用于玉米品种鉴定及DNA指纹库构建的玉米品种DNA快速煮沸法，用快速煮沸法提取了玉米种子胚、胚乳；水培初生根、侧根；种子出苗后的初生根、侧根、胚芽鞘、胚轴、叶片等组织DNA，结果表明，种子胚、胚乳组织；水培2～4d水培初生根、侧根组织；出苗1～5d的胚芽鞘、胚轴组织用快速煮沸法提取DNA效果较好。

The viewpoint that seed recalcitrance is a compound quantitative trait is a new and further cognition, which will be a help for studying causes and resolve of seed recalcitrance on species-specific basis.

种子顽拗性的复合数量性状特征的提出及其三个层面的划分，有助于加深对种子顽拗性的认识，并用以指导我们在实践中解决种子顽拗性方面的具体问题。

Hevea brasiliensis seeds belong to the typical recalcitrant seed, and have the typical recalcitrance: Desiccation sensitivity, chilly sensitivity and storage intolerance, therefore, Instant Sowing after Harvest has to be required in the practice, which restricts the development of some practices of Hevea brasiliensis seedling technique.

橡胶树种子属于典型的顽拗性种子，具有典型的顽拗特性：脱水敏感性、低温敏感性、不耐贮藏性，因此，在生产实践中不得不要求橡胶树种子"即采即播"。这限制了橡胶树育苗等相关生产的发展。

The seed is the main factor of grain increase production, the country values seminal job very much, serve as project of executive seed industrialization countrywide commissariat remount is new 2000 the major move of step.

种子是粮食增产的重要因素，国家非常重视种子工作，把实施种子产业化工程作为2000年全国粮食再登新台阶的重大举措。

Degradation strongly influences the presence of tolerative species in the seed bank and the vegetation, but it were less role to ruderal species.

我们认为：1土壤种子库拥有大量早期演替阶段的物种；2条件耐受性物种通常缺乏种子库；3退化强烈的影响了条件耐受性物种，而对杂草性物种的影响不大；4土壤种子库对青藏高原高寒草甸的恢复具有重要的贡献。

Test results showed that paving sand method can effectively eliminate the seed bounce. Paving high clean sand on the belt can provide favorable background for computer identifying seeds distribution. In addition, this equipment has advantage of no oil pollution, seeds recycling use and convenient operation.

经实际测试结果表明，铺砂能有效消除种子着落弹跳现象，高洁净度砂带可为计算机图像识别种子分布状况提供良好参照背景；该试验台还具有无油垢污染、种子可循环利用以及操作简便等特点。

Moreover, Seed dispersal also relies on animal and waterpower, which make seeds spread far distance, at the same time, the penetration of seed capsule can be improved by the dam age of animal's digestive system, so it can promote the seed germination.

此外，还有动物散布和水力作用的散布，使种子能传播较远的距离，同时种子被采食后，通过消化道的磨损使种皮的通透性提高，促进了种子的萌发。

ML^(-1);(2) The allelopathic effects of the leaves and inflorescences of Solidago canadensis on these three crops are strong than those from the stems;(3) Among these three crop species, the seed of Brassica chinensis var. communis is more sensitive to the water extract of Solidago canadensis than those of Capsicum annuum, Lycoperiscum esculetum.

mL^(-1)浓度处理下，甚至使作物种子失去活力；(2)加拿大一枝黄花叶和花序的水浸提液对种子萌发和生长的影响要大于其茎的浸提液；(3)在3种作物中，长梗白菜种子对加拿大一枝黄花水浸提液的敏感性最高。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。