乔纳金

本试验以新红星和乔纳金为试材首次研究了外源槲皮素对苹果果实细胞膜系统、乙烯及SOD、POD、IOD酶的影响。

Two cultivars of apple , " Starkrimson " and " Jonagold " were used as materials to examine the regulating effects of quercetin on cell membrane system , ethylene biosynthesis and the activity of SOD , POD , IOD .

红乔纳金等4个苹果品种的平均生根率均达71.0%以上，最高为90.8%。

Rooting rates of 4 apple cultivars were above 71.0 % , and the highest was 90.8 % .

在珊夏与乔纳金、腾木1号、首红之间的存活率存在显著差异。该结果与其寄主选择的结果一致。

The result was consistent with the host choice . The difference between survival rate on Sansa and others was remarkable .

选用陕西省18个有代表性的苹果黑星病菌菌株分别接种秦冠、富士、嘎啦、红星和乔纳金等5个寄主品种进行致病力测定。

Five apple cultivars were individually inoculated with 18 representative single spore isolates of Venturia inaequalis collected from main apple grown areas in Shaanxi province .

试验结果表明，嘎拉和乔纳金树冠外围果实套纸罩可减弱果实受光强度2/3左右，生长季晴天果实日表面最高温度降低7℃以上，果实日灼率由45%左右降为7%~11%左右。

Experimental study shows that the paper cone shading of fruits in periphery of tree crown can significantly reduce the light reception by 2 / 3 by fruit , resulting in a decrease of fruit surface temperature (≥ 7 ℃) . So the sunburn percentage is lowered dramatically .