Long-term, high-intensity shading enhances triterpene production of loquat leaf through increasing foliar mineral nutrients

文献类型： 外文期刊

第一作者： Shan, Youxia

作者： Shan, Youxia;Deng, Chaojun;Hu, Wenshun;Chen, Xiuping;Zheng, Shaoquan;Qin, Qiaoping;Deng, Chaojun;Hu, Wenshun;Chen, Xiuping;Zheng, Shaoquan;Chen, Junwei;Shan, Youxia

作者机构：

关键词： Loquat; UA; OA; Multi-model inference; Random forest; Leaf nutrients

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2020 年 260 卷

页码：

收录情况： SCI

摘要： Loquat (Eriobotrya japonica Lindl.) leaves are often used as herbal or folk medicines and applied into modem pharmacology. In this study, the effect of three shading levels (control/non-shading, monolayer netting, bilayer netting) and the duration (0-88 days) on leaf gas exchange, leaf mineral nutrients, ursolic acid (UA) and oleanolic acid (OA) accumulation of loquat trees, Xinbai1, were assessed. The results indicated that UA and OA production improvement can be up to 17.20% and 9.35% respectively during bilayer netting treatments compared with control trees. Besides, a series of mixed-effect linear models with treatments and its duration as random effects revealed that the leaf transpiration within crown, Ca, P and K concentrations represented the most parsimonious combination for both UA and OA, consistent with the patterns in random-forest regressions. Therefore,.it emphasized that shading would be the potential cultural practices for high production of UA and OA through increasing foliar mineral nutrients.

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