Inheritance study in tomato (Solanum lycopersicum) for Tomato leaf curl virus (ToLCV) resistance

R K SINGH; N RAI; P KUMAR; A K SINGH

doi:10.56093/ijas.v85i7.50116

Authors

R K SINGH Research Associate, CISH, Lucknow, Indian Institute of Vegetable Research, P Box 5001, PO BHU, Varanasi, Uttar Pradesh 221 005
N RAI Principal Scientist, Indian Institute of Vegetable Research, P Box 5001, PO BHU, Varanasi, Uttar Pradesh 221 005
P KUMAR Ph D scholar, Indian Institute of Vegetable Research, P Box 5001, PO BHU, Varanasi, Uttar Pradesh 221 005
A K SINGH Ph D scholar, Indian Institute of Vegetable Research, P Box 5001, PO BHU, Varanasi, Uttar Pradesh 221 005

https://doi.org/10.56093/ijas.v85i7.50116

Keywords:

Generation mean analysis, S. lycopersicum, ToLCV resistance, Yield traits

Abstract

A breeding programme was developed from an initial S. lycopersicum × S. lycopersicum (H 88-78-1) cross. The objective of this study was to determine the inheritance of resistant to leaf curl virus and yielding capacity in four crosses made within and between gene pools (TLBR 3 × H 88-78-1, PKM 1 × H 88-78-1, FLA 7421 × H 88-78-1 and Vaibhaw × H 88-78-1) using generation means analysis with five generations (P₁, P₂, F₁, F₂ and F₃) of each population under two environment (field and glasshouse). Results showed that the character of plants and fruits morphology was fit on 1:2:1 (P₁: intermediate: P₂) and ToLCV (PDI) value was fit on 3:1 (resistant: susceptible) Mendalian ratio in each four F₂ populations. In the present study, it was concluded that the generation mean analysis showed monogenic and partial recessiveness and incomplete penetrance. Each population displayed the additive and dominant gene action according to their heritability for using characters. The partial resistance derived from H 88-78-1 will be useful in homozygosis or may be combined with other resistance genes from other sources and can be grown in any climate challenging area.

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