4.7 Article

A New Grafting Method for Watermelon to Inhibit Rootstock Regrowth and Enhance Scion Growth

期刊

AGRICULTURE-BASEL
卷 11, 期 9, 页码 -

出版社

MDPI
DOI: 10.3390/agriculture11090812

关键词

Citrullus lanatus; grafting tool; rootstock regrowth; scion growth; vegetable grafting

类别

资金

  1. National Key Research and Development Program of China [2019YFD1001900]
  2. National Natural Science Foundation of China [31972434]
  3. China Agriculture Research System of MOF [CARS-25]
  4. Hubei Provincial Natural Science Foundation of China [2019CFA017]
  5. Huazhong Agricultural University-Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences Cooperation Fund [SZYJY2021005]
  6. China Agriculture Research System of MORA [CARS-25]

向作者/读者索取更多资源

Grafting is commonly used in watermelon production, but traditional methods can be costly. A new grafting tool was developed in this study to reduce rootstock regrowth and improve scion growth, saving labor time in the process.
Grafting is a widely used technique in watermelon (Citrullus lanatus) production. However, cost of grafted seedlings is generally high as a result of intensive labor inputs for propagation using traditional grafting methods such as the manual removal of rootstock regrowth. This study developed a new grafting tool to physically remove the epidermis of pumpkin (C. maxima x C. moschata) and bottle gourd (Lagenaria siceraria) rootstock cotyledon base during grafting; we called this a new grafting method. Compared with the traditional grafting, the new grafting method significantly decreased the pumpkin rootstock regrowth rate from 100% to 8% in hole insertion and 2% in one cotyledon grafting, respectively. These attenuated rates for bottle gourd rootstock regrowth were 23% and 9% in hole insertion and one cotyledon grafting, respectively. The scion dry weights of new hole insertion and one cotyledon grafting were increased by 78% and 74% when pumpkin was used as rootstock as compared with traditional grafting without regrown rootstock removal, while the respective values were 33% and 17% in bottle gourd rootstock grafted plants. In addition, the time used for the new hole insertion grafting method to physically remove the epidermis of pumpkin rootstock cotyledon base was significantly shorter than the time required to remove the rootstock regrowth manually three times in the traditional grafting (4.2 s/plant vs. 9.3 s/plant). Similar results were also observed in the new one cotyledon grafting (4.2 s/plant vs. 8.8 s/plant). Taken together, this study presents a new method in watermelon grafting to reduce rootstock regrowth, therefore benefiting both scion growth and plant management, thus the development of this new method is clearly useful in watermelon production.

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