breeding by selection 中文意思是什麼

breeding by selection 解釋
選擇育種
  • breeding : n. 1. 孵化；飼養；繁育。2. 選種；育種。3. 繁殖，生育。4. 薰陶；養育，教養，禮貌。5. 【原子能】增殖，再生。
  • by : adv 1 在側，在旁，在附近。2 （擱）在一邊，（放）到旁邊，（存）在一旁；收著。3 （由旁邊）經過，過...
  • selection : n. 1. 選擇；挑選；選拔。2. 拔萃；選擇物；精選物[品]；文選。3. 【無線電】分離，（自動電話）撥號。4. 【生物學】選擇，淘汰。
  1. Breeding of indica hybrid rice xieyou 218 with resistance to bacterial leaf blight by marker - assisted selection technique

    採用分子標記技術育成優質抗病雜交稻新組合中優218
  2. Based on the summarization of 20 years breeding and selection experiences of jiaxian red cattle, the market trends and bio - tech development, the technical measures of breed conservation system which combine the livestock, frozen semen and embryo storage were proposed to mainly investigate the breeding technology strategy by foreign blood introduction to increase the earlier maturity, milk production and meat performance of jiaxian red cattle

    本文在總結郟縣紅牛20年保種選育經驗基礎上，根據市場發展趨勢及生物技術水平，提出了建立活體保種和冷精胚胎保種相結合的保種體系的技術措施，重點探討了通過引入外血提高郟縣紅牛早熟性，泌乳性，肉用性的育種技術模式。
  3. This study dealt with the identification and evaluation of 8 maize populations from tropical and subtropical regions under the ecological conditions in zhengzhou, henan. results showed that the significant delaying days to shed and days to silk, discoordinating for the development of male and female, higher plant and ear height, more leaf numbers, high barreness, worse performance of ear traits compared with the ck ( temperate population ) were found, which showed the tropical and subtropical populations could not be utilized directly under the ecological conditions in zhengzhou. by using selection and improvement the tropical and subtropical populations can be used to broaden the genetic base of temperate maize breeding, beause of the greater genetic variation and higher selection potential within each population. the different performances of the sensitivity to photoperiod were observed among different tropical and subtropical populations and different traits. the asi, time to silk, ear height, leaf numbers, grain yield per ear could be used as the good evaluation traits for identifying the sensitivity to photoperiod

    對8個熱帶、亞熱帶玉米群體在鄭州生態條件下的表現進行鑒定和評價，結果表明，熱帶、亞熱帶群體散粉、吐絲期顯著延遲，雌雄不協調，植株和穗位高、葉片數增多、空稈率高，結實性差，果穗性狀均明顯劣於溫帶對照，在鄭州生態條件下不能直接利用，但是群體內具有較大的遺傳變異和選擇潛力，可以用來拓寬現有玉米種質的遺傳基礎；不同熱帶、亞熱帶群體的光周期敏感性不同；不同性狀對光周期反應的敏感程度不同， asi 、吐絲期、穗位高、葉片數、穗粒重可作為鑒定光周期敏感性的較好指標
  4. Besides, to discuss the methods and pathways for building the hybridize parents of excellent quality by yunnan scent soft rice germplasms and for selection breeding the hybrid rice of high quality, to discuss the scent gene genetic expression of yunnan rice germplasms and the problem of breeding application

    此外，討論利用雲南香型軟米稻種資源創建品質優異雜交稻親本和選育優質雜種稻的方法和途徑，以及雲南稻種資源香味基因遺傳表現及其在育種中應用問題。
  5. Genetic markers enable plant breeders to begin their selection at the cell stage by looking for the gene responsible and checking at an early stage of cross - breeding, whether the desired gene has been inherited by the offspring plant, instead of having to go through the process of cross - pollination and then growing the offspring to see if they have inherited the desired characteristics, and if not, starting all over again.

    遺傳標記物的存在能夠使植物育種家在細胞階段就開始進行選種，所用的方法包括尋找相應的基因以及在雜交早期進行檢查看看想要的基因是否遺傳到子代植物，這樣就不需要經過復雜的傳統育種過程：雜交授粉種植子代觀察子代是否獲得想要的性狀如果子代沒有攜帶想要的性狀，再從頭開始
  6. Even though most variety selection aspects of breeding programmes are made under high soil fertility levels, investigations into the nutrition of the crop in recent times, are largely left in the hands of the fertilizer producers, although national and state soil fertility and crop nutrition programmes were conducted by csiro and the state departments of agriculture in the past

    目前大部分育種項目的品種選擇著眼點是基於高土壤肥力水平，對作物營養的調查很大程度上由肥料商來完成，盡管過去全國和州的土壤肥力和作物營養項目是由聯邦科學和工業研究組織和州農業署進行的。
  7. According to their fiber qualities and yield - character performances, eight f1 combinations from the cross between high quality fiber property varieties ( strains ) and insect - resistant varieties ( strains ) were evaluated to determine the best combination by using grey system principles and methods, which will help to improve selection efficiency and to accelerate cotton breeding process

    摘要利用優質陸地棉品種（系）和常規抗蟲棉品種（系）配製雜交組合，根據f1代產量、主要產量性狀及纖維品質性狀表現，運用灰色評判原理與方法分析比較其灰色綜合評判值，以確定優良組合，為優質高產抗蟲雜交棉的選育提供理論依據。
  8. After hybridization between wild rice with high disease resistance and high heritability and cultivated rice with high yield and other good agronomic characters according to the breeding aim, new quality germplasm could be promptly obtained by anther culture and then strictly selection

    按育種目標選擇抗病力強，傳遞力高的野生稻與豐產、農藝性狀優良的栽培稻雜交，通過花藥培養並對後代實施嚴格選擇，可迅速獲得新的優質源。
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