Evaluation of Compatibility, Growth Characteristics, and Yield of Tomato Grafted on Potato (‘Pomato’)

S M Anamul Arefin,Abul Hasnat Solaiman,Cheol Ho Park,Mourita Tabassum,Most Tahera Naznin,Md Obyedul Kalam Azad,Naheed Zeba

doi:10.3390/horticulturae5020037

Abstract

The aim of this study was to evaluate the grafting compatibility of different varieties of tomato (Solanum lycopersicum L.) scions on potato (Solanum tuberosum L.) rootstocks to develop a ‘pomato’ plant. In this study three potato varieties; Diamant (P1), Cardinal (P2) and Asterix (P3), and two tomato varieties; Bangladesh Agricultural Research Institute (BARI) tomato-2 (T1) and BARI tomato-11 (T2) were used to make the grafted combinations T1P1, T1P2, T1P3, T2P1, T2P2 and T2P3, designated G1, G2, G3, G4, G5, and G6, respectively. Tomato seedlings aged 25 (S1) and 35 days (S2) were selected as scions. Graft compatibility was analyzed based on the growth and yield of the pomato plants. The results revealed that varieties and scion age had a significant effect on the pomato fruit and tuber yield. The initiation of flowering was not affected by the various graft combinations; however, plant height, leaf number, branch number, number of clusters per plant, number of fruit per cluster, number of fruit per plant, fruit length, fruit diameter, single fruit weight and total fruit yield per plant were higher in G5S1 among the combinations. On the other hand, the number of tubers per plant, single tuber weight, and tuber yield per plant were highest for a few combinations. Overall, it was concluded that Cardinal (P2) and Asterix (P3) potato were the most compatible for grafting with BARI tomato-11 (T2) at the scion age of 25 days (S1), based on vegetative growth and fruit and tuber yield of pomato plants.

Highlights

The ‘pomato’ is a chimeric plant produced by grafting a tomato (Solanum lycopersicum L.) scion on a potato (Solanum tuberosum L.) rootstock, with tomatoes growing on the vine while potato tubers grow under in the soil of the same plant
It from the the study that that a pomato plant can be can successfully developed through. It was wasclearly clearlyobserved observed from study a pomato plant be successfully developed grafting a tomato scion to a potato rootstock
We have shown that different varieties of tomato scions can be successfully grafted on potato rootstocks, and the specific combinations affect tuberization and fruit set in pomato plants

Summary

Introduction

The ‘pomato’ is a chimeric plant produced by grafting a tomato (Solanum lycopersicum L.) scion on a potato (Solanum tuberosum L.) rootstock, with tomatoes growing on the vine while potato tubers grow under in the soil of the same plant. Both species belong to the Solanaceae family, share a common primary chromosome number, and have natural graft compatibility [1]. Grafting performance depends on compatibility between the scion and rootstock. Vascular tissue of the scion and rootstock should contact each other in order to make a successful graft. Incompatibility of Horticulturae 2019, 5, 37; doi:10.3390/horticulturae5020037 www.mdpi.com/journal/horticulturae

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