Effects of Grafting with Different Rootstocks on Fruit Yield and Quality of Muskmelon Under Continuous Cropping

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Abstract

Grafting is a promising approach to control melon fusarium wilt disease. However, there is a potential risk of deterioration in the quality of melon fruit due to scion–rootstock interactions. Using two primary muskmelon cultivars, ‘ZheTian 105’ (ZT105) and ‘ZheTian 401’ (ZT401) in Zhejiang Province as scion, and taking one squash (interspecific hybrids between Cucurbita maxima and Cucurbita moschata) ‘Sizhuang No.12’ (SZ12) and four melon, ‘YongZhen No 9’ (YZ9), ‘XiaTe’ (XT), ‘ZhenTian No 1’ (ZT1), and ‘T1-151’ (T1) as rootstock, the yield and fruit quality including total soluble solid content (SSC), flesh texture, and flavor of grafted melon were measured, compared with non-grafted melon. The results indicated there was no significant difference in single fruit weight among the grafted melon and non-grafted melon plants, while the yield of most grafted melon plants was significantly higher than that of the non-grafted ones. No significant differences were observed in SSC and flesh texture among the grafted and non-grafted melon plants. The fruit of the “ZT401/SZ12” combination exhibited peculiar odors reminiscent of pumpkin flavor, negatively affecting edibility, whereas the fruit of the “ZT105/SZ12” combination did not. Considering both yield and fruit quality, the results indicated that the squash rootstock “SZ12” and the melon rootstocks “ZT1” are suitable for grafting with the muskmelon cultivar “ZT105”, while the melon rootstocks “ZT1” and “T1” are appropriate for grafting with the muskmelon cultivar “ZT401”. The results of this research are of considerable significance for the sustainable cultivation of the cultivars “ZT105” and “ZT401”, particularly under continuous cropping conditions.

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