Borlaug's new semi dwarf, disease resistant varieties, called Pitic 62 and Penjamo 62, changed the potential yield of Mexican wheat dramatically.
Borlaug新型半矮秆抗病品种，被称为Pitic 62和Penjamo 62，极大地改变了墨西哥小麦的潜在产量。
Indeed, Worede thinks scientists may well find the Ug99-resistant varieties they're looking for in Ethiopia's fields.
实际上，沃瑞德认为，科学家也许在埃塞俄比亚的田地里不难找出抗ug99的品种。
Breeding resistant varieties is an efficient way in controlling yellow rust.
培育抗病品种是控制小麦条锈病的一种有效途径。
The most effective method to control these diseases is to screen and to breed resistant varieties.
筛选和培育抗病品种是防治病害最为有效的方法。
This result is of im - portance both to selecting frost resistant varieties and to frost damage prevention.
该研究结果对于抗霜品种的筛选以及霜冻害的防御工作有一定的参考意义。
The insect-resistant varieties make their own insecticide, a property meant to reduce the need for chemical sprays.
植入抗虫基因的作物会自行制造杀虫剂，因此可望减少化学药剂的喷洒。
Screening and utilization of rice resources resistant to blast is the foundational measure to breed resistant varieties.
抗病种质资源的发掘、研究与利用是水稻抗稻瘟病育种的重要基础。
For example, disease - resistant varieties of wheat have been crossed with high - yield wheat to combine these properties.
比如，抗病小麦同高产小麦杂交，形成了一种具有双重特性的新的小麦品种。
The contents of amino acids got from leaf surface of resistant varieties by water rinsing were more than those of susceptible ones.
抗性品种叶表水漂洗物中氨基酸含量高于感性品种。
The achievements have been made in the localization of melon disease - resistance genes, resistance germplasms and resistant varieties.
甜瓜抗病遗传基因定位研究和抗源、抗病品系研究取得的成就。
Heat resistance identification is the basic job in variety selection for hot seasons, as well as for breeding of heat resistant varieties.
种质耐热性鉴定是在炎热季节选择相对适宜品种和培育耐热叶用莴苣品种的一项基础工作。
Due to the lack of effective chemical fungicides and resistant varieties, fusarium wilt has become the limiting factor in cucumber production.
由于常规农药对枯萎病防效甚微，并且抗病性品种缺乏，枯萎病已经成为制约黄瓜生产的限制性因素。
Sensitive varieties apprently respire mainly by the glycolysis pathway whereas resistant varieties depend more on the pentose phosphate pathway.
显然敏感品种的呼吸主要通过糖酵解途径，而抗性品种比较依赖戊糖磷酸途径。
The research progress on the control techniques of sapling quarantine, using resistant varieties, biological and chemical control was introduced.
介绍了加强苗木检疫，抗病品种选育，生物防治，药剂防治等方面防治技术研究进展。
Methods of control downy mildew included utilizing medicine and closing a greenhouse at high temperature, but were ultimately to produce resistant varieties.
防治霜霉病可采取喷施杀菌剂和高温闷棚等措施，但根本途径是培育抗霜霉病的黄瓜优良品种。
It is widely accepted that breeding, selection and cultivation of the disease resistant varieties are the most economic and efficient disease control practice.
长期的实践表明，选育、种植抗稻瘟病品种是最经济有效的防病措施。
These results suggested that in vitro screened rice somatic mutants resistant to sheath blight had the similar resistant mechanism as general resistant varieties.
由此说明离体筛选的水稻抗纹枯病突变体的抗病机制与一般抗性品种类似。
The contents of tannin in immature kernels of resistant varieties were significantly higher than (2.4-5.9 times as many as) those of highly susceptible varieties.
高抗和中抗品种的单宁含量是高感和感虫品种的2.4-5.9倍，极显著地高于高感和感虫品种。
The photosynthetic rate of the leaves declined with the decrease of soil water potential, but drought-resistant varieties reduced less than drought-sensitive ones.
叶片光合速率随土水势的下降而减小，抗旱性品种减小的幅度小于抗旱性较差的品种。
The results showed that the indole alkaloid contents of flag leaves and ears in most resistant varieties (lines) were higher than susceptible ones, especially in ears;
结果表明，大多数抗蚜品种（系）的旗叶和穗部吲哚生物碱含量均高于感蚜品种（系） ，尤其穗部。
The roles of plant inducible resistance in biological control of the beet armyworm and the research exploring new resistant varieties of crops in future were also discussed.
展望了植物诱导抗虫性在甜菜夜蛾的生物防治和新型抗虫品种开发等领域的应用前景。
The course and rate of the shift of virulence differed from different resistant varieties as a result of their diversities in both resistant mechanism and genetic background.
由于抗虫品种抗虫机制及其遗传背景的差异，褐飞虱在不同的抗虫品种上致害性转化的进程和速率亦不同。
By cluster analysis 21 alfalfa varieties were classified into three types: high drought-resistant varieties, medium drought-resistant varieties and low drought-resistant varieties.
以此对21个苜蓿品种抗旱性进行了聚类分析，并将不同苜蓿品种划分为高、中、低抗三个类型。
Under soil drought stress conditions, drought - resistant varieties (species) accumulated comparatively higher free proline content than those in the less drought - resistant varieties.
土壤干旱胁迫导致游离脯氨酸大量累积，抗旱品种(种)比不抗旱的累积量要大。
The rice bacterial blight (BB) is one of the most serious diseases in China. Breeding resistant varieties has proved to be the most effective and economical means to control the disease.
水稻白叶枯病是危害我国水稻生产的严重病害，培育抗病性品种是最有效的防治办法。
Teliospore appeared on susceptible varieties earlier than on resistant varieties. More but smaller teleutosorus were formed on susceptible varieties in comparison with resistant varieties.
感病品种比抗病品种出现冬孢子的时间早，数量多，但体积小。
At present, the research of bacterial fruit blotch focuses on pathogen identification, pathogen detection methods and techniques, the identification of disease-resistant varieties and so on.
目前，对瓜类细菌性果斑病菌的研究主要集中在病原菌鉴定、病原菌检测方法和技术、抗病品种的鉴定等方面。
At present, the research of bacterial fruit blotch focuses on pathogen identification, pathogen detection methods and techniques, the identification of disease-resistant varieties and so on.
目前，对瓜类细菌性果斑病菌的研究主要集中在病原菌鉴定、病原菌检测方法和技术、抗病品种的鉴定等方面。
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