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

Changjin Liu, Weiguo Lin, Chongran Feng, Xiangshuai Wu, Xiaohu Fu, Mu Xiong, Zhilong Bie and Yuan Huang
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Changjin Liu: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
Weiguo Lin: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Chongran Feng: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
Xiangshuai Wu: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
Xiaohu Fu: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Mu Xiong: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
Zhilong Bie: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
Yuan Huang: College of Horticulture and Forestry Sciences/Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China

Agriculture, 2021, vol. 11, issue 9, 1-13

Abstract: 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 × 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.

Keywords: Citrullus lanatus; grafting tool; rootstock regrowth; scion growth; vegetable grafting (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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