雜種不育 的英文怎麼說

中文拼音 [zázhǒngbùyù]
雜種不育 英文
hybrid incapacity
  • 雜 : Ⅰ形容詞（多種多樣的; 混雜的） miscellaneous; varied; sundry; mixed Ⅱ動詞（混合在一起; 攙雜） mix; blend; mingle
  • 種 : 種名詞（姓氏） a surname
  • 不 : 名詞[書面語] （剁物所用的木墩） a block of wood
  • 育 : 育動詞1. （生育） give birth to 2. （養活; 培育） rear; raise; bring up 3. （教育） educate
  • 雜種 : [生物學] hybrid; crossbreed; intercross; [遺傳學] random breed; [動物學] half bred; 雜種不育性 hy...
  1. ( 2 ) gene flow frequency was reduced as distance from pollen donor increased and a dramatic reduction occurred at about 2 meters. the maximum distance where gene flow was not detected was 50 m for hybrid rice while it was 70 m for ms lines, with an exception that in one of the four ms lines it was detected a frequency of gene flow 2. 8 + 10 - 6 at 150 m for zhong 9a

    在開花期主流風向ne的風速為0 . 2 ? 2 . 2m / sec的條件下， 2個雜交稻品種的最大漂流距離為40m ； 4個不育系的基因漂流基本上到60m為止， 70m處基因漂流頻率均降為0 ，僅中9a在150m處發現了1株basta抗性苗，經pcr檢測驗證為陽性。
  2. The experiment was conducted in a 2. 4 ha isolated field mimic rice production practice with pollen competition. a japonica gm rice l201 containing bar gene with herbicide basta resistance was used as a pollen donor and six indica hybrid rice varieties and its male sterile ( ms ) lines and two common wild rice ( oryza rufipogon and o. nivara ) that share same aa genome with cultivated rice were used as recipients

    本試驗選擇廣州作為華南水稻生態區的代表，以含bar基因（抗除草劑basta ）的轉基因粳稻l201為花粉供體，模擬大田生產實際，對轉基因向秈型兩系及三系雜交稻不育系、雜交稻品種及含aa基因組的普通野生稻的基因漂流及其影響因素進行了研究。
  3. With plants we have conclusive evidence that the sterility of crossed species must be due to some principle.

    在植物方面，我們已有確實的證據，表明雜交物種的不育性一定是由於某種原理而起。
  4. The self - incompatibility characteristics and heterosis breeding on rape

    油菜的自交不親和性和雜種優勢育種
  5. Study on heterosis and combining ability of male sterile system of hexaploid triticale with t. timopheevi cystoplasm

    型細胞質雄性不育體系雜種優勢與配合力的研究
  6. A major barrier to interspecific hybridization is sterility in the f1 progeny.

    種間雜交的主要障礙是F1代的不育性。
  7. Abstract : the main characters and seed set of bc1 ， bc2 ， bc1f2 from ms line back - crossing with the pollen of hybrid rice were studied. the appearance of a large number of self fertile plants in ms line was analyzed. the effect of introgression of restoring genes on ms line purity and hybrid yield in indica and japonica rice was discussed. it was pointed out that “ iso - cytoplasm restorer line ” was seriously reducing the purity of ms line and that hybrid rice was unsuitable for isolation zone in the seed production fields

    文摘:研究了雜交稻花粉對母本不育系回交後代群體bc1 、 bc2 、 bc1f2的主要農藝性狀和育性表現，分析了不育系中出現大量自交結實株的原因，討論了恢復基因滲入對秈、粳不育系純度和雜交稻產量的影響，指出「同質恢」對降低不育系純度的嚴重性和雜交稻作制種田隔離區的不合理性。
  8. Introduce according to the relevant data, persian cat is in around 16 centurieses, from the himalayas cat and angola cat miscellaneous hand over, lift through several years to breed but grow purely. persian cat ' s figure is bigger, wering grown by the hair and thick and airtight, head circle big, the face is flat even, sum breadth the ear is small, circle the eye snub - nosed tone short breadth, the body feels round and smooth because the hair grows, the arms and legs is thick short soft, the tail is fluffy and bulky, giving person a kind of noblest felling. persian cat ' s pressing is canned is divided into a white, black, red by the hair color ' s dissimilarity, yellow, dark gray, blue, double color, tortoise shell color, miscellaneous color, tiger spot color etc. species. take species of the red as among them valuable

    根據有關資料介紹，波斯貓是在16世紀左右，由喜馬拉雅貓和安哥拉貓雜交，經過多年的提純繁殖而培育出來的.波斯貓體形較大，被毛長而且厚密，頭圓大，臉扁平，額寬耳小，圓眼塌鼻口吻短寬，軀體因毛長而感覺渾圓，四肢粗短柔軟，尾蓬鬆粗大，給人一種雍容華貴的感覺.波斯貓按被毛顏色不同可分為白色，黑色，紅色，黃色，暗灰色，藍色，雙色，玳瑁色，雜色，虎斑色等品種.其中以紅色的品種尤為名貴.波斯貓外表美麗大方，叫聲細小甜美，性格溫和，膽大好奇，喜歡與人親近，善解人意，容易調教，是一種深受人們喜愛的高貴寵物.有關波斯貓的起源眾說紛紜，現較統一的說法是在阿富汗土著長毛貓的基礎上，同土耳其或亞美尼亞地區的安哥拉貓雜交培育而成。
  9. Hybrid sterility is sometimes overcome by polyploidy

    有時可用多倍性來克服雜種不育性。
  10. No mature seeds were used the method of embryos culture. during culture of the hybrid embryos form different cross classification, the proportion and concentration of hormones were different

    對早培育胚進行胚培養發現，不同的雜交組合，雜種胚生長所需的激素濃度和配比不同。
  11. All of the crosses produced hybrid seeds that developed into adult plants even if without embryo rescue culture

    雜種種子發育良好，不需通過幼胚拯救技術即可萌發，獲得雜種植株。
  12. Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements

    利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大
  13. The results indicated that opposite maize had widespread heterosis like alternative maize ; yield advantage of opposite f1 ( alternative alternative ) was better than that of f1 ( opposite opposite ) and f1 ( alternative opposite or reverse ) ; general combining ability of yield characters was decreased by opposite characters transfer maize, but alternative maize with opposite genes has high general combining ability, so that on the opposite maize breeding, alternative inbred lines with different opposite genes can be parents for breeding hybrid lines ( alternative alternative ) and hybrid varieties with more seeds and high yield can be obtained

    結果表明：對生玉米同互生玉米一樣具有普遍的雜種優勢，在產量性狀上f1對生株優勢互互組合大於對對組合和對互（互對）組合；對生性狀的轉育對產量性狀的一般配合力有降低效應，而含有對生基因的互生玉米具有較高的一般配合力效應，因此，在對生玉米育種中可以利用含有不同對生基因的互生自交系作親本來組配雜交組合（互互） ，從而獲得較高的制種產量和高產的對生雜交種。
  14. 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
  15. Hybrid sterility the reduced ability of some hybrids to produce viable gametes

    雜種不育性：某些雜種產生可育配子的能力下降的現象。
  16. Different growth period adjust technique of hybrid rice production

    雜交水稻制種不同生育期花期調節技術
  17. A major barrier to interspecific hybridization is sterility in the f1 progeny

    種間雜交的主要障礙是f1代的不育性。
  18. In the early 1970s, he succeeded in developing three strains of hybrid rice, namely male sterile, maintainer and restorer, and obtained the world s first high - yielding hybrid rice strain. he is the first scientist who successfully altered the self - pollinating characteristic of rice and made large - scale farming of hybrid rice possible. this earned him the title " father of hybrid rice "

    七十年代初，袁教授成功實現了雜交水稻的不育系、保持系及恢復系三系配套，首次育出雜交水稻；他又打破世界的自花授粉作物育種的禁區，並實現了大面積種植雜交水稻的可能，為他在國際上贏得雜交水稻之父的美譽。
  19. Cytoplasmic male sterility ( cms ) is of tremendous importance in plant breeding

    摘要細胞質雄性不育的研究在雜種優勢利用上具有重要的實踐意義。
  20. Chromosomal hybrid sterility

    染色體雜種不育
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