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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (12): 2665-2679.doi: 10.16420/j.issn.0513-353x.2023-0524

• Cultivation Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Pumpkin Rootstock Grafting on the Expressions of Basic DUS Characteristics and Fruit Quality Indicators in Cucumber

FU Shenzao, REN Jun, WANG Xin, WANG Ningning, FANG Jian, XU Donghui*(), YANG Kun*   

  1. State Key Laboratory of Vegetable Biobreeding,Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China
  • Received:2023-08-18 Revised:2023-11-01 Online:2023-12-25 Published:2023-12-29
  • Contact: XU Donghui, YANG Kun

Abstract:

Using one variety each for North China type,South China type,and European type as scion,and one pumpkin variety as rootstock,the effects of rootstock grafting on the expression of 50 basic DUS characteristics and five fruit quality indicators of cucumber varieties were studied in accordance with the“NY/T 2235-2012 guidelines for the conduct of tests for distinctness,uniformity and stability- cucumber”and UPOV Testing Guidelines TG/61/7. The results showed that:(1)Among the 50 basic DUS characteristics,ten qualitative characteristics,seven pseudo-qualitative characteristics,and seven quantitative characteristics which were visually assessed remained unchanged between the grafted and self-rooted treatments of the three varieties,indicated that these characteristics had good stability and they could be used as the main characteristics for identifying cucumber varieties grafted with rootstocks;the notes of other six quantitative characteristics which were visually assessed differed by one between the grafted and self-rooted treatments,resulting in the difference was not significant,so these characteristics could be used as the alternative characteristics for identifying cucumber varieties grafted with rootstocks. While,grafting had an impact on the quantitative characteristics which were measured by individuals,with significant differences in internode length of main vine and length of leaf blade between the grafted and self-rooted treatments of the three varieties,making them unsuitable for identifying cucumber varieties grafted with rootstocks.(2)Compared with the self-rooted plant,the protein content of the fruits in the grafted plant of three varieties was significantly increased,while the soluble solid content,vitamin C content and soluble sugar content did not significantly change. The dry matter content in the grafted plant of North China type variety was significantly reduced,while there was no significant change in the South China and European type varieties.

Key words: cucumber, grafting, DUS test, characteristics, fruit quality