A New Grafting Method for Watermelon to Inhibit Rootstock Regrowth and Enhance Scion Growth
A New Grafting Method for Watermelon to Inhibit Rootstock Regrowth and Enhance Scion Growth
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DOI：
10.3390/agriculture11090812
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发表时间：
2021-09-01
影响因子：
3.6
通讯作者：
Huang, Yuan
中科院分区：
文献类型：
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作者：
Liu, Changjin;Lin, Weiguo;Huang, Yuan
嫁接是西瓜生产中广泛采用的一种技术。然而，嫁接苗的成本通常很高，这是由于使用传统嫁接方法（例如手动移除砧木再生长）进行繁殖的密集劳动投入的结果。本研究开发了一种新的物理去表皮南瓜嫁接工具。maxima × C. moschata）和葫芦（Lagenaria siceraria）砧木子叶基部嫁接的新方法。与传统嫁接法相比，插穴嫁接法和单子叶嫁接法的再生率分别从100%和2%降低到8%和2%。插穴嫁接和单子叶嫁接对葫芦砧木再生的衰减率分别为23%和9%。以南瓜为砧木的新穴嫁接和单子叶嫁接的接穗干重比不去再生砧的传统嫁接分别增加78%和74%，而以葫芦为砧木的嫁接苗的新穴嫁接和单子叶嫁接的接穗干重分别增加33%和17%。此外，新的插穴嫁接方法用于物理去除南瓜砧木子叶基部表皮的时间显著短于传统嫁接中手动去除砧木再生三次所需的时间（4.2 s/株vs. 9.3 s/株）。在新的一个子叶嫁接中也观察到类似的结果（4.2s/株对8.8s/株）。综上所述，本研究提出了一种新的西瓜嫁接方法，以减少砧木再生，因此有利于接穗生长和植物管理，因此这种新方法的发展显然是有用的西瓜生产。
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.