大多数的苹果品种起源于亚洲。
北美唯一的苹果品种是红果。
The only apple that is native to North America is the crabapple.
嫁接苹果品种亲和性好，是一个良好的苹果砧木。
When apple varieties were grafted to M. hupehensis, they showed good affinity. It is, therefore, recommended as a good rootstock for apple trees.
讨论了RAPD鉴定苹果品种的应用及其主要影响因素。
The RAPD application in apple variety identification and the important influence factors on RAPD reaction were discussed.
现已获得16个苹果品种和6个梨品种的无病毒母本树。
Virus-free mother trees of16apple varieties and6pear varieties had been obtained in the study.
进一步提出了钙在苹果品种对褐斑病的抗病性中可能的作用。
It was further raised the possible role of calcium in resistance of apple varieties to the apple blotch.
红富士苹果是当前主栽的苹果品种，但是幼树生长较旺，成花困难。
Red Fuji apple is the major cultivar at present, but the young trees grow excessively and are difficult in forming flower bud.
法兰克·宾是火鸡场和苹果园场主，研发了其独有的火鸡和苹果品种。
Frank Bean is a Turkey and apple farmer. He invented his own species of each.
可选择的苹果品种范围很广：史密斯奶奶，粉红女士，黄帅，富士（我的最爱！）
There's such a wide range to choose from: tart Granny Smith, sweet Pink Lady, mildGolden Delicious, sweet-tart Fuji (my favorite!
这次DNA的重大发现能够带来新的苹果品种，这些改良后的品种更不容易受到病害侵袭。
The DNA breakthrough could result in new and improved apple varieties which are more resistant to disease.
根据本区苹果品种混杂、管理粗放、结果晚、产量低、效益差等问题，提出了采取综合配套技术。
Through investigation, several problems on apple production in Luoyang, such as low production, poor quality and low economic profit are discovered.
有人估计，在这个国家销售的90%的苹果品种数只有11个，其中单“红富士”一个品种就占了将近一半。
According to one estimate, only 11 varieties make up 90 percent of all the apples sold in this country, and Red Delicious alone counts for nearly half of that.
《西澳报》在其网站上称，这种苹果是由澳大利亚的“威廉姆斯夫人”和“黄元帅”两个苹果品种杂交培育而成的。
The apple was bred naturally in Australia from the varieties Lady Williams and Golden Delicious, the West Australian newspaper said on its website.
测定了苹果黑星病菌接种秦冠、富士和嘎啦三个苹果品种后植株叶片内POD、SOD、PPO和PAL四种酶活性的变化。
Changes of enzyme activity of POD, SOD, PPO and PAL of 3 different resistant cultivars that were inoculated with pathogens and water were determined in different time.
进一步开展苹果原生质体培养融合技术的研究，对于创造新种质材料，促进原生质体技术在苹果品种和砧木遗传改良中的应用将具有重要的意义。
Therefore, it is significant to further study protoplast culture and fusion which could create new germplasm and be useful to genetic improvements of cultivars and rootstocks in apple.
使用自制的日灼诱导设备，在无风或微风的晴天对活体果实进行田间日灼诱导，通过改变诱导室内的气温来控制和调节果面温度，从而确定了不同苹果品种果实发生日灼的阈值温度。
A special inducing device for fruit sunburn was made to study the "threshold temperatures"with attached fruit. The results showed that, the device worked perfectly in calm, clear and sunny days.
使用自制的日灼诱导设备，在无风或微风的晴天对活体果实进行田间日灼诱导，通过改变诱导室内的气温来控制和调节果面温度，从而确定了不同苹果品种果实发生日灼的阈值温度。
A special inducing device for fruit sunburn was made to study the "threshold temperatures"with attached fruit. The results showed that, the device worked perfectly in calm, clear and sunny days.
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