SEED

摘要： Lettuce(Lactuca sativa L.),which belongs to the large Asteraceae(Compositae)family,breeds by sexual reproduction and produces seeds.Actually,lettuce seeds are achenes,which are defined as fruits.However,few studies have described the morphological characteristics of the lettuce achenes,and genes essential for achene development are largely unknown in lettuce.To investigate the gene activity during achene development and determine the possible mechanisms that influence achene development in lettuce,we performed a time-course transcriptome analysis of lettuce achenes.A total of 27,390 expressed genes were detected at the five achene development stages.We investigated the gene expression patterns during achene development and identified the enriched biological processes at the corresponding stages.Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses revealed a variety of transcriptomic similarities and differences at different achene development stages.Further,transcription factors and phytohormones were found to play important roles during achene development.Finally,we proposed a working model to illustrate the gene expression modules and possible molecular mechanisms underlying achene development.Our time-course transcriptome data also provide a foundation for future functional studies to reveal the genetic control of achene development in lettuce.

摘要： Background:Ajowan,dill,moldavian balm and black cumin are annual medicinal plants,essential oil bearing that are cultivated in different parts of the world.Methods:A field experiment was conducted to assess the essential oil of ajowan,dill,moldavian balm and black cumin under salinity of 0.3,3,6 and 9 dS/m NaCl.Essential oils were obtained by using a Clevenger apparatus and their constituents were identified by GC and GC/MS.Results:Results showed that essential oil yield varied in tested plants under salt stress,but its changes did not follow a specific trend.Thymol was the most abundant constituent of ajowan seed essential oil,while thymol,γ-terpinene and p-cymene were the major constituents of the foliage essential oil of it.The most important component of dill seed essential oil was carvone and three main components of foliage essential oil were carvone,limonene andα-phellandrene.The essential oil component in moldavian balm mostly contained neral,geranial,geraniol,neryl acetate and geranyl acetate.The essential oil of black cumin was mainly composed of p-cymene under saline irrigation.Conclusion:The essential oil yield and compositions were affected by salt stress.The essential oil yield decreased because of decreasing dry biomass production.

摘要： Polyploid plants grow well,are stress tolerant,and are rich in nutrients and bioactive compounds.Thus,they are useful for improving crop quality and yield.In this study,we compared the seed characteristics and metabolite profiles of diploid and tetraploid tartary buckwheat,which was developed via an artificially induced chromosome doubling event.The length,width,area,and thousand-grain weight were greater for the tetraploid seeds than for the diploid seeds.However,the germination rate decreased for the tetraploid seeds.Additionally,there was a gap between the shell and kernel of the tetraploid seeds.Moreover,the water absorption rate was higher for the tetraploid than for the diploid seeds.Chromosome doubling increased the seed total flavonoid content and deepened the seed color.A principal component analysis of the ultrahigh-pressure liquid chromatography-high resolution mass spectrometry data revealed the clear separation between the diploid and tetraploid samples.An orthogonal partial least squares-discriminant analysis and other multivariate statistical analyses identified 83 differentially abundant compounds,with most of the flavonoid metabolites more abundant in the tetraploid than in the diploid seeds.Research on tartary buckwheat polyploidy may result in enhanced germplasm resources and may clarify the mechanism underlying the biosynthesis of bioactive compounds.

摘要： Echium plantagineum(Boraginaceae)is native of the Mediterranean regions,has been introduced and become widespread within the American continent(North to South),South Africa,New Zealand and Australia.This plant has seed dormancy,aggressively spreads to infest vast areas of predominantly agricultural land and is considered a toxic weed to livestock.The objectives of this research were:(i)to study the morpho-anatomy of the diaspores of E.plantagineum;(ii)to identify the pathway of water uptake;and(iii)to characterize the germination and the seedling.The morpho-anatomical studies were carried out analyzing semi-permanent slides of transverse and longitudinal sections of the fruits,seeds and seedlings.Histological,histochemical and conventional staining techniques by using stereoscopic,optical and scanning electron microscopy were applied.In the diaspores,the water uptake pathway was determined by fast green staining,germination tests were performed and the morpho-anatomy of seedlings was analyzed.The diaspores showed acrescent calyx surrounding the fruit,composed by 4 rough tuberculate mericarpids.Each indehiscent mericarpid encloses an exalbuminous seed with a thin coat and a spatulate embryo with folded coty-ledons.Water uptake took place through the vascular trace“protuberance”in the cicatrix of the mericarpid,which triggers the germination process.Germination was epigeal,the cotyledons were photosynthetically active at the emergence,and a rudimentary developed gemmula was observed.Germination percentage was 66.5%.The macrosclereids of the pericarp functions as an obstacle to water uptake,which is overcome when the mericarpid is detached from the gynobase,and the protuberance that acts as a water uptake path is exposed,leading to germination.The morpho-anatomical characteristics of diaspore,explain the successful dispersal for this aggressive weed,and provide important information in relation to the necessary care for its control.

摘要： Shrubby seablite or lani(Suaeda fruticosa Forssk)is a perennial euhalophyte with succulent leaves,which could be planted on arid-saline lands for restoration and cultivated as a non-conventional edible or cash crop.Knowledge about the impacts of maternal saline environment on seed attributes of this important euhalophyte is lacking.This study investigated the effects of maternal salinity on yield,size and stress tolerance of S.fruticosa seeds.Seedlings of S.fruticosa were grown in a green net house under increasing maternal salinity levels(0,300,600 and 900 mM NaCl)until seed production.Total yield,size,stress tolerance and germination of the descended seeds under different maternal saline conditions were examined.Plants grown under saline conditions(300,600 and 900 mM NaCl)produce a substantially higher quantity of seeds than plants grown under non-saline condition(0 mM NaCl).Low maternal salinity(300 mM NaCl)improves seed size.Seeds produced under all maternal salinity levels display a higher tolerance to low temperature(night/day thermoperiod of 10°C/20°C),whereas seeds produced under 300 mM NaCl maternal saline condition show a better tolerance to high temperature(night/day thermoperiod of 25°C/35°C)during germination.Seeds from all maternal saline conditions germinate better in the 12 h photoperiod(12 h light/12 h dark)than in the dark(24 h dark);however,seeds produced from low and moderate maternal saline conditions(300 and 600 mM NaCl)show a higher germination in the dark than those from control and high maternal saline conditions(0 and 900 mM NaCl).In general,maternal salinity is found to improve yield,size and stress tolerance of S.fruticosa seeds.

摘要： 研究地震数据存储及交换的SEED和miniSEED格式标准,对存储格式中的Steim1和Steim2的压缩方法和编码方式进行了深入分析,对比了国内外SEED格式的差异,利用MATLAB软件实现了SEED和miniSEED格式压缩数据的解压和应用.

摘要： 作为高达40周年企划中的一环,经典战棋游戏——《SD高达G世代》终于在日前公布了其最新作《火线纵横》。讽刺的是,在前作《创世》只收录UC的情况下,本作将不含任何UC要素,只收录W、SEED、00、铁血的奥尔芬斯4个系列,而挑选这它们的原因也很单纯——人气高。

摘要： Information about the effects of phenotype traits on cottonseed protein, oil, and nutrients is scarce. The objective of this research was to investigate the effects of leaf color trait on seed nutrition in near-isogenic Gossypium hirsutum cotton expressing green (G) and yellow (Y) leaf color phenotypes. Our hypothesis was that leaf color can influence the accumulation of nutrients in seeds. Sets of isogenic lines were: DES 119 (G) and DES 119 (Y);DP 5690 (G) and DP 5690 (Y);MD 51ne (G) and MD 51ne (Y);SG 747 (G) and SG 747 (Y). Each NIL set is 98.44 % identical. Parent line SA 30 (P) was used as the control. The experiment was repeated for two years (2014 and 2015). The results showed that, in 2014, seed oil in DES 119 (G) and SG 747 (G) were significantly higher than their equivalent yellow lines. Green lines showed higher content of phosphorus compared with yellow lines. Higher levels of Cu, Fe, Mn, Ni, and Zn were recorded in DES 119 (G) and MD 51ne (G). In 2015, seed protein, oil, C, N, P, B, Cu, and Fe were higher in green lines than in yellow lines. There was a significant correlation between protein and nutrients, and between oil and nutrients in 2015, but not in 2014 as the temperature was warmer in 2015 than in 2014. This research demonstrated that leaf color can alter seed composition and mineral nutrition under certain environmental growing conditions such as temperature.

摘要： The large life cycle Rhaponticum integrifolium in natural populations (Qashqadaryo, Uzbekistan) was studied. Duration of before generative, generative and senile periods of Rhaponticum integrifolium is 2 - 5, 8 - 10 and 2 - 4 years respectively. The beginning of phenophases depends on the height of the terrain above sea level: raising the terrain from 400 to 1500 m leads to a delay in the onset of phenophases. Age states of Rhaponticum integrifolium in different ecological and phytogenetic conditions were revealed. Updated distribution of detected participation of vegetation and the raw Rhaponticum integrifolium in Uzbekistan, describes the dynamics of the contents ecdysteroids in the periods of vegetation. At the same time, a map of the species area in Central Asia was made and the term of its phytomass recovery under different operating modes of thickets was determined.

摘要： 本申请公开了一种序列比对的Seed处理方法、系统、装置及计算机可读存储介质，根据Seed在待比对序列上的待比序列位置和在参考序列上的候选比对位置，确定出Seed之间两种位置相对关系一致的线性Seed，将线性Seed进行拼接，得到新的拼接Seed，再从包括拼接Seed和非线性Seed的Seed集中筛选出覆盖待比对序列同一碱基片段碱基最长的最长Seed，进一步再从Seed集中筛选出待比对序列上的每个目标碱基片段中覆盖目标碱基片段且终止位置大于无效Seed的Seed，得到综合各目标碱基片段的目标Seed得到目标Seed集，目标Seed集不包括最长Seed集中的Seed，综合减少后续序列比对算法进行扩展时使用的Seed数量，从而减少比对系统的计算量，提高基因序列比对的匹配精度和处理性能。

摘要： 本发明公开了基于CRAFT和SCRN‑SEED框架的自然场景文字检测识别方法，包括如下步骤：(1)利用真实数据集和合成数据集建立图像数据集，将图像数据集分为训练集和测试集；(2)利用图像数据集训练CRAFT网络；(3)利用真实数据集训练不规则文本纠正网络SCRN；(4)将SCRN与SEED网络结合，训练结合后的SCRN‑SEED网络；(5)将CRAFT网络与SCRN‑SEED网络连接，构建完整的模型并进行训练。本发明能够充分检测弯曲变形文本或长篇文本实例，通过精确地定位每一个字符，然后再把检测到的字符通过亲和力机制连接成一个文本达到检测的目的，对于弯曲、变形或者极长的文本都适用；通过不规则文本图片的矫正以及将语义信息用于全局信息的检测，能够精确的识别低质量的文本实例。

摘要： 本发明公开了一种基于改进MaskRCNN与SEED框架的自然场景文字检测识别方法，该方法将CV领域常用的实例分割算法Mask‑RCNN进行改进并用于自然场景中的文字定位，将其输出结果(蒙版Mask、边框Box)通过进一步的RoI Masking操作增强图像文字部分信息，然后与用于场景文字的语义增强的编码器‑解码器框架SEED组合完成精确度较高的自然场景文字检测与识别。本发明所述方法能够显著降低对训练过程中所需数据集的要求，对文字定位精确至字符轮廓，得到的文字识别精确度高。

摘要： 本发明公开了一种SEED半固态铸造的压力容器及其铸造方法，包括主体，所述主体的内部设置有电热管，所述主体的内部且位于电热管的外侧设置有通水管，所述主体底部的一侧固定连接有连接块，所述主体的顶部远离连接块的一端开设有第一安装孔，所述主体的顶部开设有通孔，所述主体的底部且位于通孔的外侧等距开设有定位孔，本发明通过采用SEED半固态进行铸造，从而使得压力容器的尺寸精度高，毛坯尺寸接近零件尺寸，同时在铸造完成之后仅需少量机械加工就能完成整体制造，力学性能较好，同时导热性能较好，使得整体工具的热量负载较小，从而极大的延长了模具的使用寿命。

摘要： 本申请公开了一种序列比对的Seed处理方法、系统、装置及计算机可读存储介质，根据Seed在待比对序列上的待比序列位置和在参考序列上的候选比对位置，确定出Seed之间两种位置相对关系一致的线性Seed，将线性Seed进行拼接，得到新的拼接Seed，再从包括拼接Seed和非线性Seed的Seed集中筛选出覆盖待比对序列同一碱基片段碱基最长的最长Seed，进一步再从Seed集中筛选出待比对序列上的每个目标碱基片段中覆盖目标碱基片段且终止位置大于无效Seed的Seed，得到综合各目标碱基片段的目标Seed得到目标Seed集，目标Seed集不包括最长Seed集中的Seed，综合减少后续序列比对算法进行扩展时使用的Seed数量，从而减少比对系统的计算量，提高基因序列比对的匹配精度和处理性能。

摘要： 本发明提供了一种基于能量驱动采样超像素分割(SEEDS)算法和门控循环单元(GRU)网络的脑图像分割方法。首先，通过对多模态图像进行预处理，得到有效的脑组织图像；同时，利用SEEDS超像素分割方法将原始脑图像划分成一定数量的超像素块并提取其空间特征；然后，对于每一块超像素块，通过已训练的GRU网络进行分类，再将分类结果结合原始脑图像得到最终的脑组织分割结果。本发明通过利用超像素为基本单元构建脑图像的空间特征，既保存了脑组织的局部特征和边缘信息，又能精准地描述各部分的脑组织结构，同时利用GRU网络将原始图像信息和空间特征融合，大大提升了分割精度。

摘要： 本实用新型公开了一种SEED半固态铸造的压力容器，包括主体，主体的内部设置有电热管，主体的内部且位于电热管的外侧设置有通水管，主体底部的一侧固定连接有连接块，主体的顶部远离连接块的一端开设有第一安装孔，主体的顶部开设有通孔，主体的底部且位于通孔的外侧等距开设有定位孔，本实用新型所达到的有益效果是：本实用新型通过采用SEED半固态进行铸造，从而使得压力容器的尺寸精度高，毛坯尺寸接近零件尺寸，同时在铸造完成之后仅需少量机械加工就能完成整体制造，力学性能较好，同时导热性能较好，使得整体工具的热量负载较小，从而极大的延长了模具的使用寿命。