The variety improvement is based on the exploitation of genetic variations.
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2. 这是他对品种改良的贡献。
It is his contribution to the improvement of the breed.
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3. 生物技术在作物品种改良中已显示了巨大潜力。
Biological technique has displayed tremendous potential in the improvement of crop breeding.
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4. 诱发突变技术在小麦品种改良中具有重要作用。
Mutation induction technique has played an important role in wheat improvement.
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5. 远缘杂交是现代蔬菜作物品种改良的重要手段之一。
Distant hybridization is one of the most important breeding methods in modern vegetable science.
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6. 近百年来我国的棉花品种改良工作取得了重大的进展。
Great advances in cotton varietal improvement were made during the last century in China.
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7. 以古老的蒸馏法由品种改良的鲜果及花朵中萃取而得。
Obtained by way of ancient distillation methods from genetically im proved fresh fruits and flowers.
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8. 在品种改良过程中，用缩短培育周期的技术培育新稻种。
During the course of this varietal improvement, the techniques for shortening breeding cycle were adopted in developing new rice varieties.
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9. 将两者紧密结合，可相得益彰，大大地提高动植物品种改良的效率。
Closely integrate the two can complement each other greatly enhance the efficiency of plant and animal species improvement.
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10. 株型是作物品种改良的重要目标性状，其中茎秆是最重要的株型性状。
Plant architecture or plant type is one of the key target traits for crop improvement, and the stem traits play leading roles in the formation of plant architecture.
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11. 培育耐盐、抗旱及抗病作物新品种已经成为作物品种改良的重要课题。
Cultivate new variety with salt-tolerance, drought-tolerance and disease-tolerance has to be an important subject.
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12. 研究水稻耐低磷机制，对高效利用土壤磷的水稻品种改良具有重要意义。
It is important to elucidate the mechanism of low phosphorus tolerance in rice for the improvement of utilization efficiency of soil phosphorus.
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13. 旨在探明中籼水稻品种改良过程中米质变化特点以及施氮量对其产量和品质的影响。
Understanding the changes in grain quality and its response to nitrogen (N) fertilizer during the improvement of crop varieties has great significance in both crop breeding and cultivation.
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14. 试验结果证明，舍饲山羊的经济效益大大超过放牧山羊，品种改良可以大大提高饲料利用率。
The results indicated the feasibility of goat house feeding, a greater economic return of house- fed goats over grazing goats, and the important role of breed improvement in improving feed efficiency.
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15. 结果表明，产量的增加主要与品种改良过程中总库容的扩大有关，其中每穗粒数的增加是关键。
The result indicated that the increase of grain yield was mainly attributed to magnifying of total sink capacity with the increase of number of spikelets per panicle as the key factor.
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16. 提高产量和品质目前人们主要是从品种改良和增施磷、钾及微量元素、选择适当刈割期等方面入手。
Presently, variety improvement, increment in P, K and microelement and selection on suitable cutting period are main methods to improve yield and quality.
Various approaches have been used to improve the performance of adapted indigenous stock, including cross-breeding and upgrading through back-crossing with improved breeds, and within-line selection.
Over ninety percent of all corn and soybeans grown in the US are engineered to improve agricultural efficiency and withstand frequent pesticide 9 applications.
Over ninety percent of all corn and soybeans grown in the US are engineered to improve agricultural efficiency and withstand frequent pesticide applications.
The method of the invention and the appropriative carrier can improve the content of the salicin in the plant greatly and provides the new method of amending the plant breed and improving the crop.
The strategy of drought resistance studies is developing drought resistance variety and introducing appropriate cultivation technology to increase rice yield as well as save water resources.
Scientists hope improvements to the popular Golden Delicious variety - which originated in West Virginia, us, more than a century ago - could enhance the taste, look, and crunchiness of the fruit.
Scientists hope improvements to the popular Golden Delicious variety - which originated in West Virginia, us, more than a century ago - could enhance the taste, look, and crunchiness of the fruit.
