MANAGEMENT OF Meloidogyne incognita IN TOMATO THROUGH GRAFTING
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Date
2023
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Abstract
An attempt was made for the management of Meloidogyne incognita in tomato through grafting. Twelve Solanum species were screened against the M. incognita. Of these, S. torvum and S. lycopersicum cv. Hisar Lalit showed resistant reactions against M. incognita whereas S. viarum showed susceptible reaction against M. incognita and the remaining species showed highly susceptible reactions against M. incognita. S. torvum and S. lycopersicum cv. Hisar Lalit were taken as rootstocks for grafting while the tomato cultivars Arka Samrat and Dona-55 were taken as scions. The susceptible and cultivated hybrids, Arka Samrat and Dona-55 were grafted onto resistant rootstocks S. torvum and S. lycopersicum cv. Hisar Lalit. Cleft grafting method was adopted for grafting. The highest success rate of grafting was recorded on Arka Samrat grafted onto S. torvum followed by Dona-55 grafted onto S. torvum. Arka Samrat and Dona-55 grafted onto S. torvum showed maximum reduction in number of galls, egg masses per root system, final nematode population and rate of reproduction with increased number of fruits per plant, fruit weight and total fruit yield per ha followed by Arka Samrat and Dona-55 grafted onto S. lycopersicum cv. Hisar Lalit. Delayed flowering and fruiting were observed in grafted plants as compared to non-grafted plants. This delayed flowering in grafted plants was found to be of advantage as it led to increased yield.