Melon grafting represent an increasingly important strategy against biotic and abiotic stresses. Cucurbita hybrid rootstocks have been extensively developed for this purpose, but it is necessary to find new alternatives. In this work, several experimental rootstocks of cultivated and wild resources from the Cucurbita and Cucumis genera have been evaluated using Piel de Sapo melon as scion. Cucurbita rootstocks tended to increase fruit size and seed cavity and offered more rounded shapes at the early stages of ripening, but this effect was later minimised. Cucumis rootstocks tended to show less vigour than those of Cucurbita. C. metuliferus hybrid rootstock caused plant collapse at specific environmental conditions, probably due to differences in the growth of rootstock and scion. One of the Cucurbita maxima x C. moschata and the Cucurbita pepo experimental hybrids were also less vigorous, delaying flowering and fruit set, and compromising yield. The effects of Cucurbita and Cucumis rootstocks on sugar and acid accumulation of Piel de Sapo were almost negligible, but they altered the volatile profile. This last impact depended on the specific scion x rootstock interaction and the environmental conditions. Cucumis rootstocks tended to minimise it, especially the hybrid Cucumis melo subsp. melo x C. melo subsp. agrestis Pat 81, which offered a volatile profile highly resembling the non-grafted control. Among Cucurbita alternatives, the commercial hybrid Cucurbita maxima x C moschata had the lowest impact, while other experimental hybrids C. moschata x C. moschata and C. maxima x C. moschata increased levels of alcohols. Among Cucumis rootstocks, the hybrids of wild species Cucumis ficifolius x C. anguria and C. ficifolius x C. myriocarpus, and C. metuliferus had a higher impact on the volatile profile.

中文翻译：

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葫芦和黄瓜砧木对 Piel de Sapo 甜瓜性能和品质的影响


甜瓜嫁接代表了一种越来越重要的对抗生物和非生物胁迫的策略。为此，葫芦杂交砧木已经被广泛开发，但有必要寻找新的替代品。在这项工作中，以 Piel de Sapo 甜瓜作为接穗，对来自葫芦属和黄瓜属的几种栽培和野生资源的实验砧木进行了评价。葫芦砧木倾向于增加果实大小和种子腔，并在成熟早期提供更圆的形状，但这种影响后来被最小化。黄瓜砧木的活力往往不如葫芦木。C. metuliferus 杂交砧木在特定环境条件下导致植物塌陷，可能是由于砧木和接穗生长的差异。Cucurbita maxima x C. moschata 和 Cucurbita pepo 实验杂交种之一的活力也较弱，延迟了开花和坐果，并影响了产量。葫芦和黄瓜砧木对 Piel de Sapo 糖分和酸积累的影响几乎可以忽略不计，但它们改变了挥发性特征。最后一种影响取决于特定的接穗 x 砧木相互作用和环境条件。黄瓜砧木倾向于将其最小化，尤其是杂交黄瓜 melo 亚种 melo x C. melo 亚种 agrestis Pat 81，它提供了与非嫁接对照高度相似的挥发性特征。在葫芦替代品中，商业杂交葫芦 x C moschata 的影响最小，而其他实验杂交种 C. moschata x C. moschata 和 C. maxima x C. moschata 增加了醇类的含量。在黄瓜砧木中，野生物种 Cucumis ficifolius x C. anguria 和 C. ficifolius x C. myriocarpus 和 C. Metuliferus 对挥发性特征的影响更大。