Characteristics of boron distribution in the 'Newhall' navel orange plant with two root systems

文献类型： 外文期刊

第一作者： Du, Wei

作者： Du, Wei;Du, Wei;Hussain, Syed Bilal;Jin, Long-Fei;Liu, Xiao;Li, Ruo-Nan;Han, Zhong-Xing;Liu, Yong-Zhong;Pan, Zhi-Yong;Peng, Shu-Ang;Du, Wei;Hussain, Syed Bilal;Jin, Long-Fei;Liu, Xiao;Li, Ruo-Nan;Han, Zhong-Xing;Liu, Yong-Zhong;Pan, Zhi-Yong;Peng, Shu-Ang

作者机构：

关键词： Citrus; B-10 isotope; Inarching; Two-root system; Boron distribution

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2021 年 167 卷

页码：

收录情况： SCI

摘要： Grafting is a technique that provides a substantial way to enhance nutrient utilization thereby improves plant growth and yield quality. Although it is commonly practised in horticultural crops, the impact of scion-rootstock interaction on nutrient distribution is still unclear. Here, 'Newhall' navel orange plants grafted on Trifoliate orange (T) as the original rootstock were inarched with trifoliate orange (N/Tt combination) or carrizo citrange (N/Tc combination) rootstock seedlings. The experimental plants were treated with isotope B-10 solution for 7 weeks to investigate the effect of different inarched rootstocks on B distribution and translocation by using a two-root system. From this study, the original rootstock played a more dominant role in B distribution to scion tissues than the inarching rootstock either in N/Tt or N/Tc combination. From inarched combinations, the carrizo citrange in the N/Tc combination had a higher ability to distribute B to new leaves, new twigs and old twigs than trifoliate orange in the N/Tt combination. However, the original rootstock of N/Tt distributed more B to scion tissues than N/Tc and the B concentration in old leaves and new leaves of N/Tt plants was significantly higher than that of N/Tc plants. These results suggest that scion B status is influenced by the B distribution of two inarching rootstocks in an inarching plant, as well as the affinity between the inarching rootstock and grafted plant. In addition, by either adding B-10 to the inarching rootstock or original rootstock, we could detect B-10 in the other rootstock root in both N/Tt and N/Tc combinations. The results further suggest that B can translocate from rootstock to leaves and then, re-translocate from scion to rootstock through the cycling of B transportation.

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