Heterosis in tomato (Solanum lycopersicum) hybrids for fruit morphological and processing traits

Abstract

In the present study, sixteen parents were crossed in a half-half half-diallel mating design to produce 120 F1 hybrids. The experiment was carried out at the Division of Vegetable Crops, Indian Institute of Horticultural Research, Bengaluru. Heterobeltiosis, relative heterosis and standard heterosis were estimated for growth, fruit yield and processing traits in F1 hybrids. Heterosis studies revealed that hybrids IIHR-2957 X IIHR-Sel.57, IIHR-Sel.19 X Arka Ashish and IIHR-Sel.19 X CLN3916D had significant desirable relative heterosis. While the hybrids IIHR-2821 X IIHR-Sel.22, IIHR-2834 X IIHR-Sel.57, Arka Ashish X CLN3916D had the highest positive and significant standard heterosis (SH) for shelf life, dry matter content and viscosity.