发芽率

In order to ascertain the allelopathy activity of Trifolium repens on weeds, the allelopathic effect of aqueous extract from the aerial part and root of T. repens under different concentrations on the germination rate, physiological and biochemical mechanism of germinating seeds of Abutilon theophrasti Medic.

为进一步明确白三叶草对杂草的化感作用，研究了不同浓度的白三叶草地上部分水浸液和根部水浸液对苘麻和稗草种子发芽率和种子萌发过程中生理生化机理的影响。

In order to ascertain the allelopathy of T.repens on weeds, the allelopathic effect of aqueous extract from the aerial part and root of T. repens. with different concentrations on the germination rate, physiological and biochemical mechanism of germinating seeds of Abutilon theophrasti Medic.

为进一步明确白三叶草对杂草的化感作用，研究了不同浓度的白三叶草地上部分水浸液、根系分泌物、挥发物对苘麻和稗草种子发芽率和杂草幼苗生长过程中生理生化机理的影响。

After the treatments of scarifications, scarified in the straight line near embryo and made part of the embryo exposed.

种子经不同刻伤处理，以近胚处直线刻伤并使部分胚裸露处理，其发芽率最高达81.3%，种子平均发芽日数为6.9日，种子发芽率达50%之日数为7.4日。

The Perennial ryegrass, Tall fescue and Red fescue have the largest seed germination rate under the 8 grades NaCl concentration stress. With the concentration increasing, the seed germination of turfgrass sharply decreased. Most of the turfgrass seeds couldn germinate under the NaC1 stress which concentration was above 0.1%, besides the Zoysia, Alkali grass and Creeping bentgrass got a good germination rate.

利用8个梯度（0％，0.2％，0.4％，0.6％，0.8％，1.0％，1.2％，1.4％）的NaCl胁迫处理试验发现，低盐浓度下（培养液〈=0.2％NaCl）草种发芽率以多年生黑麦草、高羊茅最高；随着盐浓度的增加，各草种发芽率迅速下降，当盐浓度达到1.0％时，大部分草种不能发芽或发芽很少，只有结缕草、碱茅及匍匐翦股颖等草种有较好的发芽表现。

These were raised underinducing condition to test if any morphology and structure changes. Twenty two Arabidopsismutants had various changes in morphology and anatomical structures. Twenty mutants hadlow germination rate from 10% to 60%, of which 2 had survival rates at 0% and 50%. Fivemutants occurred structure changes in the hypocotyls or stem. One of these lines, namedarris-stem, showed some unique changes: slower growth rate in comparison with the wildtype from germination to florescence; serrated margin of leaf blades, spiral rosette; morebranch in the bottom part of the stem, shorter nodes, twisted stem and branch. There were oneor several arrises along the stem. Across sections of the arrises showed one or several compactcells lumps which were round, made up of several layers of cells, looked like vascular-bundle.

在诱导条件下，这些突变体表现出不同的形态和结构的变化，共有22个表型和结构发生变化。20个突变系发芽率或存活率较低，发芽率由10％—60％，其中2个突变系存活率分别为0％和50％。5个突变系在茎或下胚轴的结构上发生变化，其中一个突变系arris-stem发生如下表型变化：从真叶出现至开花结实的整个生长期，生长速度要明显比野生型拟南芥缓慢；叶缘有明显锯齿，莲座叶呈螺旋状排列；茎的基部有较多侧枝，侧枝间距明显缩短，茎有明显扭曲；突变体茎侧面有1至数条棱形突起，内部存在一至数个排列紧密的细胞团，由多层细胞呈环形排列，细胞壁明显加厚，内部存在管状分子，推测为维管组织。

Then summarizing the seed burgeon, growing character and it's regulation, the main conclusions are as fallowing:1. The germination percentage differs from different male parents, female parents and combinations.

父本、母本及组合间在发芽率上表现极显著差异，某些亲本所配的组合，其发芽率具有明显的优势，说明种子活力在很大程度上是由基因型所决定。

Seed germination percentage is negatively related with seed glumes split number of hybrid rice combination which is from the same female parent but different male parent.

株1S系列组合前三期收获的种子发芽率虽然有逐步上升的趋势，但差异不显著，第四期收获的种子发芽率明显下降，差异达极显著水平。

Only the effect of H202 could break out the dormancy of green foxtail from Huaian and germination rate was beyond 60%, but it could not increase germination rate of green foxtail from Salingzi to the same level.

单用双氧水可以打破怀安青狗尾草种子休眠使其发芽率提高到60％以上，但却不能把沙岭子青狗尾草种子发芽率提高到合适的程度。

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。

The change tendencies of seed viability of different crops were not completely same after storage. Mean GP declined significantly in oats and winter wheat parents after storage.

不同作物种子发芽率的变化趋势不完全相同，燕麦和冬小麦亲本两种作物种子平均监测发芽率出现了显著下降。

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。