- 更多网络例句与自然开花的相关的网络例句 [注:此内容来源于网络,仅供参考]
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During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica
阿拉伯芥是第一个完成基因体定序的开花植物,其基因体资讯提供植物学研究的重要依据;在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时,阿拉伯芥近缘的野生物种自然成了不可或缺的关键;跟阿拉伯芥近缘的物种包括A halleri及A lyrata,其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾,与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽,而A lyrata ssp kamchatica主要分布於东北亚及台湾,与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔,这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构,本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种,两对互为亚种的姊妹群,以阿拉伯芥为外群进行研究,在四个物种完成98个同源基因的分子序列,利用套装软体MCMCcoal来估算祖先物种的遗传变异,亦估算现生物种的核苷酸歧异度,观察到?多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度,显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式,在某些物种配对间邻域种化模式应比异域种化更为可能;在基因树与物种树的比较,98个基因片段的亲缘模式只有28个是与已知物种树一致的,有23个基因其树状图支持{ lyrata} thaliana的型式,藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率,推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。
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It was able to sprout stem leaf that the bulblet was cooled in natural after growth more than 50mg.
籽球重量超过50 mg并经过自然低温后有能力抽地上茎。7月20日前扦插繁殖的籽球第二年会开花,7月10日前扦插比7月20日产前插繁殖的籽球开花率高,露出扦插比覆土扦插开花率高。
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In our results, the sweetsop flowering time was during the last third of May to the early July in Beijing greenhouses. 6.9 to 6.23 was the very stage which had more flowers and high set rate. We could use this period for artificial pollination to enhance the output.
结果表明:在北方日光温室环境条件下,番荔枝自然开花集中时间为5月下旬到7月上旬,6月9~23日,是番荔枝开花数量多并且坐果率较高的时期,生产中可充分利用这一时期的人工授粉提高坐果量。
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Usually used unicuspid type, many branches, branches of bright flowers bloom dense varieties, follow the mountain overhanging the natural posture of wild Cindy ...
通常选用单瓣型、分枝多、枝条细软、开花繁密的小花品种,仿效山间野生小菊悬垂的自然姿态。。。
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When a "short-day"condition of 8 hours was provided,sweet potato plants flowered about 10-25 days earlier than that under natural condition in Foochow.
当给以8小时短日条件,甘薯植株比在福州自然条件下的提早开花10——25天。
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From 1956 to 1958, the study of the effects of day length upon the Photostage, floral curve, number of boll and the development of reproductive organs of the Sea Island cotton Gossypium barbadense L.
在10小时日照下的棉株較在自然日照及16小时光照下的棉株其现蕾期及开花期均提早,第一果枝着生节位下降,开花数及結鈴数均显著增加。
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In a word, the greening of residential area should take advantage of the plants' purify, beautification and protective function, making people's daily life every detail and greening in close contact with each other,let residental area is no longer drab, but a complete green ecological system, various kinds of color is the plant, flowering plants, shade plants to create landscape, it is pleasant to create a harmonious natural inhabitants of ecological living space.
总之,居住区绿化要充分发挥植物的净化、美化及防护功能,使人们日常生活中每一细节与绿化密切接触,让居住区绿化不再是一两块单调的绿地,而是一个完整的绿地生态系统,是用各类色叶植物、开花植物、遮阴植物等营造出的怡人景观,是为居民创造的一个和谐自然的生态居住空间。
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Nature pollinates all of the flowering plants; it is nature that decays material, returns it to the earth.
性质pollinates所有的开花植物,它是自然衰变的物质,返回到地球。
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Being the common green-ever shrub,the wild ones can naturally extend to the mountain. Blooning witg white,red,and purple flower in winter.
是很普遍的常绿灌木,野生的则自然延伸覆盖在山丘上,开出白色、红色、紫色的小花朵,冬季开花。
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The effect of number of short-days on development and flowering of 'Millennium' and ' Velveteen' poinsettia was studied by transferring plants from short-day to natural long days.
短日照处理不同天数后转到自然长日照下,研究短日照处理对促成栽培的'千禧'和'早生天鹅绒'一品红生长开花的影响。
- 更多网络解释与自然开花的相关的网络解释 [注:此内容来源于网络,仅供参考]
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Cerasus cerasoides:冬樱花
冬樱花(Cerasus cerasoides)又称高盆樱、冬海棠,属蔷薇科植物. 秋冬开花,花色粉红,盛开时满树繁花似锦,艳丽夺目;花后续长紫红色嫩叶,可丰富冬季园林植物的色相变化,为少花的冬季增添绚丽的自然景观,对亚热带地区城市的冬季景观有重要意义.
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Eichhornia crassipes:凤眼 蓝
越来越多化学染料发现有问题,天然用品可能可以提供一个更自然健康的选择凤眼蓝(Eichhornia crassipes)於夏秋开花,是较常见的水生植物. 原产南美洲,因繁殖生长迅速,如逸生河道,可引致河道堆塞,可成为害草. 但亦有人加以栽种作猪或鸭子的饲料.
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limonium sinuatum:勿忘我
勿忘我(Limonium sinuatum)在昆明地区4至6月份为其自然花期,在露地条件下能生产出品质很好的切花. 而勿忘我冬季的经济价值较高,是花期限调控的主要目标. 由于勿忘我是在低温下花芽分化,在较高温度下开花,因此完成了花芽分化的勿忘我要在冬季花,