种子的

This research was conducted in degraded rangeland at the southwestern edge of the Mu Us sandland, Yanchi county, Ningxia, the soil seedbank features and its relation to vegetation was analyzed using similarity analysis and ordination method, the results show that seeds within soil distribute mainly in 0~5 cm soil layer, less seeds in 6~15 cm soil layer in exclosed and non-exclosed rangeland, for seeds in exclosed soil, species richness and diversity index H are higher, while D is lower, exclosure measure, generally speaking, can increase plant species and amount of vegetation and seeds in soil, some annual plants, mesophytes and halophytes appears in the soil or surface.

以毛乌素沙地西南缘宁夏盐池县的退化草场为研究对象，采用相似性分析和排序方法对封育和未封育草场土壤种子库的特征及其与地上植被间关系进行了研究，结果表明无论封育区还是未封育区，土壤种子库中的种子主要分布于0~5cm的土层，6~15cm土层的种子数很少；封育区土壤种子库的物种丰富度大于未封育区，物种多样性则表现为H 值较大，而D值较小，总体上看封育措施可以提高地上植被和土壤中种子的种类和数量，一些一年生植物、中生植物和盐生植物开始出现在地面或土壤种子库中。

We used Edward's long-tailed rats and Cork oakseeds with different seed size, a dominant granivore and tree species in the experimental forest of Dujiangyan City, Sichuan Province, to test the two predictions of the Optimal Cache Spacing Model in a semi-natural enclosure:(1) The caching proportion of big seedsshould be higher than that of small ones; and (2) the big seeds will be cached at a longer distance from their source sites than will the small ones.

以小泡巨鼠为研究对象，在围栏条件下，测定小泡巨鼠对大小两种栓皮栎种子的贮藏行为差异，以检验最优贮藏空间模型的两个预测：(1)大种子的贮藏率大于小种子；(2)大种子的贮藏距离远于小种子。

The seeds of soil in faun increases greatly because of the adding of the maturate seeds.

有大量活力很高一年生杂草的种子存在于土壤种子库，秋季种子库中由于当年种子的加入，种子库种子含量显著增加。

Under unshaded conditions, large seeds had significantly (p.01) higher rates of germination than did small seeds.

结果表明：(1)在自然光照下，黄帚橐吾种子大小对种子萌发的影响显著，大种子的萌发率高于小种子。

The seed of Camelina sativa contain 5.67% jelly which envelopes the seed and could absorb 181.31 times water. This might be the main cause that the seeds of Camelina sativa absorb more water in more rapid speed than wheat, which can explain the drought-resistance of Camelina sativa.

亚麻荠种子的外层胶质占种子总重的5.67%，可吸收181.31倍的水分，使种子在最初10min内即可吸收相当于自身重量8倍的水分，浸泡24h后吸水量达到10倍左右；而小麦种子浸泡24h后吸水量只有54.7%，据此认为这可能是亚麻荠种子抗旱性较强的原因。

And then the two different turfgrass seed germination tests conducted, results show that: 0.1 percent concentration of hydrogen peroxide concentration of 0.01% of the "Bi-care" and the concentration of 0.29 percent for the "God LU Hong Lu," The three kinds of reagents soaking treatment can significantly improve the wild Pennisetum and Eragrostis seed germination and growth of 0.10 percent by the concentration of the soaking H2O2 solution, then 0.29% concentration of the "God LU Hong Lu" after soaking solution, wild Pennisetum Eragrostis seeds and seed germination energy, germination percentage, germination index, root length and were significantly higher than control to deal with the seeds, but also to varying degrees higher than the other chemical reagents used to deal with the seeds, rapid germination and tidy.

然后对两种草坪草不同的种子处理进行了发芽试验，结果表明：浓度为0.1%的过氧化氢、浓度为0.01%的&碧护&和浓度为0.29%的&鲁虹神露&这三种试剂浸种处理能显著提高野生狼尾草和大画眉草种子的萌发和生长，经浓度为0.10%的H2O2溶液浸种，再经浓度为0.29%的&鲁虹神露&溶液浸种处理后，野生狼尾草种子和大画眉草种子的发芽势、发芽率、发芽指数、根长和芽长均显著高于空白对照处理的种子，也不同程度的高于用其他化学试剂处理的种子，发芽快而整齐。

The results showed that seed rain continued about two months with an average of 12.44 seeds m-2 and peaked at late November to early December. There's significant difference among the proportions of perfect, worm-eaten, abortive, decayed and germinated seeds in the process of seed rain, in which the proportion of the worm-eaten was 19.44 times as great as the geminated.

结果表明，福建青冈种子雨持续2个月，其高峰期在11月下旬～12月上旬，总量为12.44 个 m-2，在种子散布过程中完好种子、虫蛀种子、败育种子、霉烂种子和萌发种子的比例差异明显，其中虫蛀种子是萌发种子的19.44倍。

According to the year with the best large-seed production, the reasons for empty seeds could be estimated as follows: Seed potential per cone calculated as 2 times the number of fertile ovuliferous scales was about 206 seeds. Percentages of seed losses resulting from pre-and post-pollination ovule abortion, prezygotic factors, embryo degeneration, and efficient seed were 33%, 27%, 39%, and%, respectively.

依据大粒种子产率最高的1年来估测空粒种子产生的因素，可以推估如下：依据每个可孕性鳞片所含2粒种子的鳞片数，潜力种子数约有206粒，再依此值算出受粉前后胚珠败育率、受精前败育率、胚败育率、及有效种子率分别为33%、27%、39%及%。

Hill County, Hebei Province, within the Army King Suanzaoren processing plant in State Administration for Industry and register in accordance with the law approved by jujube seed processing formal units, a large number of wholesale perennial nursery dedicated, Suanzaoren, Suanzaoren seed, jujube seed, jujube seed, advanced processing technology, low breakage rate, color, ruddy, plump grain, germination rate, the number of large, at 300 tons, watch-like ordering of guaranteed quality our nursery dedicated Suanzaoren seeds, in November 2006 10-12, Henan Xinzheng "organized by China (International Industrial High-Level Forum on jujube jujube both Product Exposition", after the Chinese jujube Research Center more than a number of experts dyeing units, the actual testing of greenhouse germination rate and synthesis of quality, won this event the field Suanzaoren highest award,"Silver"Hebei, Cangzhou, Yuncheng, Shanxi, Shaanxi Yan'an, Yangling, Shandong and other places Wenshang customers have come to my place and then sold wholesale reselling axillaris seeds.

河北省内丘县军景酸枣仁加工厂，是在国家工商行政管理局依法注册批准加工枣树种子的正规单位，常年大量批发育苗专用枣仁、酸枣仁、酸枣仁种子、枣树种子、红枣种子，加工技术先进，破损率低，颜色红润，子粒饱满，发芽率高，数量大，在300吨左右，看样订货，质量有保证，(我们的育苗专用酸枣仁种子，在2006年11月10-12日，河南新郑举办的&中国枣产业高层论坛既枣产品博览会&上，经过中国枣研究中心等多家单位的多位专家染色、温室实际测试发芽率和综合品质，荣获本次盛会酸枣仁领域最高奖项&银奖&)河北赞皇、沧州、山西运城、陕西延安、杨凌、山东汶上等地客商，都到我地批发酸枣种子后再转手倒卖。

In order to understand the molecular basis of heterosis, modified differential display of mRNA was used to characterize the difference in gene expression between cross-fertilized and self-fertilized kernels, reciprocal cross-fertilized kernels and their parents during the early stages of seed development by using 3 wheat hybrids with different level of heterosis.

本研究旨在利用mRNA差异显示技术探讨小麦杂交种子和自交种子以及正反杂交种子与其双亲在种子发育前期的基因表达差异，同时对杂种优势利用的模式作物玉米的杂交种子和自交种子的基因表达差异也进行了研究，并对典型的差异表达片段进行了克隆测序，为揭示杂种优势形成的分子机理积累了更多的资料，取得的主要结果如下

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。