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首页> 外文期刊>Scientia horticulturae >Carbohydrate profiles in the graft union of young sweet cherry trees grown on dwarfing and vigorous rootstocks
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Carbohydrate profiles in the graft union of young sweet cherry trees grown on dwarfing and vigorous rootstocks

机译：在矮化和旺盛的砧木上生长的年轻甜樱桃树的嫁接物中的碳水化合物分布

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摘要

In composite (scion-rootstock) dwarfing fruit trees, an overgrowth at the graft union is often observed, the severity of which is correlated with degree of dwarfing. The graft union of dwarfing sweet cherry (Prunus avium L.) rootstocks may limit soluble sugar transport or starch mobilization, leading to localized accumulation. Soluble sugars and starch were measured in the tissues surrounding the graft union of young Rainier' (2002) and Lapins' (2003) sweet cherry trees on Gisela 5' (Gi 5'; dwarfing) and Colt' (vigorous) rootstocks. Separate rootstock shank, rootstock, graft union, and scion tissues were analyzed for both starch and soluble sugar content throughout the growing season in both years. Starch concentrations did not vary among locations within the graft union for Rainier' on either the dwarfing or vigorous rootstock, or for Lapins' on the dwarfing stock. However, for Lapins' on Colt', starch was highest in the rootstock shank and declined vertically (rootstock shank+/-rootstock>union>scion). Soluble sugar concentrations were generally similar to or higher in scions on Gi 5' than on Colt', and were similar to or lower in the rootstock and rootstock shank on Gi 5' than on Colt'. Results suggest that rootstock has a significant effect of localized accumulations of carbohydrates above and within the graft union of Gi 5' and below the graft union of Colt'.
机译：在复合（接穗砧木）矮化果树中，经常观察到嫁接处的过度生长，其严重程度与矮化程度有关。矮甜樱桃（Prunus avium L.）砧木的嫁接会限制可溶性糖的运输或淀粉的动员，导致局部积累。在Gisela 5'（Gi 5';矮化）和Colt'（有力的）砧木上的年轻Rainier'（2002）和Lapins'（2003）甜樱桃树的嫁接处周围的组织中测量了可溶性糖和淀粉。在这两个年份的整个生长季节中，分析了单独的砧木小腿，砧木，嫁接联合和接穗组织的淀粉和可溶性糖含量。对于矮化或旺盛的砧木，Rainier'或矮化砧木的Lapins，淀粉浓度在嫁接接头内的位置之间均不变化。但是，对于Lapins'on Colt'，淀粉在砧木小腿中最高，并且垂直下降（砧木小腿+/-砧木>联合>接穗）。 Gi 5'上接穗的可溶性糖浓度通常与Colt'相似或更高，而Gi 5'上的砧木和砧木小腿的可溶性糖浓度则比Colt'相似或更低。结果表明，砧木对Gi 5'嫁接接头上方和内部以及Colt'嫁接接头下方的碳水化合物的局部积累具有显着影响。

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