群體發育期 的英文怎麼說
中文拼音 [qúntǐfāyùqī]
群體發育期
英文
astogenetic stage-
Three types of cuticular thickening at the polar region of the guard cells are observed : slight cuticular thickening ; rod - shaped culicular thickening and rarely t - shaped thickening. with data obtained from the former research and personal observation, the cladistic methods were employed for the phylogenetic analysis of data and trees were rooted by out - group comparison using, the related genus kadsura. as result, a new system of the genus schisamdra michaux was reconstructed, and schisandra michaux was subdivided into 2 subgenus, 3 section, 2 series 10 species in this dissertation
整理有關五味子屬植物研究的資料，補充搜集近期發表的資料和本人研究所得數據，以種為基本單元，選擇近緣的南五味子屬（ kadsura ）作為外類群，採用paup4 . 0b4a軟體對本研究得出的性狀數據作分支分析，重建五味子屬的系統發育，修訂和補充五味子屬分類系統，在五味子屬下設2亞屬、 3組、 2系、 10種。In education, the author explains that the educational innovation served as premise and security for the development of physics via in - depth analysis on the college education and educational system of physics in germany ; ln philosophy, to avoid the superficial and rigid opinions that philosophy either guides or hinders physics, which is resulted from one - way analysis on the influence of physical knowledge by specific philosophical knowledge, based on the combination of physical achievements by philosophy and profound philosophical knowledge, the author illustrates that the influence on german physics by philosophy reflects more on a kind of spirit a nd this very spirit brings the new quality into the german physics ; in mathematics, by means of analyzing integration of mathematics and physics at different stages, the author is tended to testify that the blooming mathematics in germany is the indispensable condition for the prosperity of german physics because. 2 mathematics provides language tools for the development of physics ; ln culture, by way of analyzing the common features of german physicists and connecting the brilliant german culture, the author audaciously brings forward that the wissenschaft ideas and faust ideas is the important driving force for the prosperity of the development of german physics
在教育方面，通過對德國大學和物理教育體制的形成的分析，說明教育改革是物理學發展的先導和保證；在哲學方面，作者避免了從具體哲學知識對物理知識影響的單一方式出發而得出「要麼指導要麼阻礙」的兩種簡單僵化觀點的弊端，將哲學對物理學成就的影響和德國物理學家群體很高的哲學素養結合起來分析，說明哲學對德國物理學的作用更多的是體現在一種氣質、精神上，正是這種氣質和精神為德國物理學的發展注入了一種新的特質；在數學方面，通過對不同時期數學和物理學融合程度的分析，證明了發達的數學是德國物理學繁榮和領先的必不可少的條件，它為物理學的發展提供了語言工具；文化方面，通過對物理學家群體特點的分析聯系燦爛的德國文化，作者大膽提出其中蘊涵的wissenschaft思想和浮士德精神是德國物理學繁榮和領先的重要動力。In order to select male nucleo - sterile new genotype, a tentative idea was put forward for the nucleo - male sterility to attach a tps ( thermo - photoperiod sensitivity ) and a selection strategy of combination of selection and identification, at the same time, the spring and summer sowing method were used to provide different environment conditions of appraising sterility and tps. the results indicated that ( 1 ) sterility could be appraised under the spring sowing environment and tps could be appraised under summer sowing environment. ( 2 ) under spring sowing environment, sterility could be selected, but not maintained. thereby, lines selected could only be selected as recorded selection method in the experiment. ( 3 ) and then, selection was carried out from spring sowing line selected into summer sowing in same line with tps to select plants. these plants through the intercrossing selection had been combined with sterility and tps. in this way, a new selection protocol for selection sterile line with tps was formed. it mainly involves the spring and summer sowing method, recorded selection method and the intercrossing selection method
為了選育新類型玉米雄性核不育系，提出了為玉米核不育性添加溫光敏感性的設想和選擇與鑒定相結合的策略，同時應用分期播種的方法為作物提供不同的生長和發育的環境條件，以鑒定玉米雄穗的育性變化和對不同環境條件溫光的反應.研究結果表明，春播環境下可鑒定和選擇玉米的不育性，夏播環境下可鑒定和選擇其溫光敏感性.針對玉米核不育性難以找到保持系的特性，結合兩種播期選擇兩種性狀.但春播環境下選擇的不育性群體難以通過選擇單株來保持其不育性，為記錄性群體選擇.通過從春播入選的雜合不育性優良株系群體轉移到其對應的夏播溫光敏感性入選的同一優良群體中進行優良單株選擇，能逐漸使不育性和溫光敏感性相結合而選育出純合溫光敏不育系.這種新的選擇程序主要包括應用分期播種法、記錄性選擇法和春夏兩季交叉式選擇法，使含有不育基因的可育株系逐步累積不育基因並增加了溫光敏感性而育成玉米溫光敏不育系Biodiversity exists among am fungi and is influenced by numerous factors including soil properties and plant species. if am fungi are to be used in sustainable agricultural systems it is necessary to study native am fungi in the target areas and then select efficient isolates that can be applied as inocula in the field to improve crop growth. the objectives of this study were to investigate the germplasm of am fungi, to understand the distribution pattern of am fungi in different ecological conditions such as area, soil factor and host plant, to select isolates effective in nutrient acquisition by the host plant sweet potato, to test their effectiveness under field conditions, and to monitor amf after their introduction into the field
本研究通過調查我國北方部分地區的am真菌資源，研究了am真菌的種群組成及其在空間、土壤利用方式和宿主植物類型等不同環境條件和空間尺度上的分佈規律；在此基礎上，根據它們對甘薯的生長、吸磷效應篩選出高效菌株，在大田條件下研究了am真菌菌絲的分佈特性、代謝活性及其對甘薯產量和品質的影響；並通過分子探針跟蹤調查了引入am真菌在共生體中的發育和表達，以期為菌根真菌的生產應用提供技術支持。An exploration of the chinese developing strategic structure of mass sports activity in
新時期我國群眾體育的發展對策分享友人