Heterosis, Residual Heterosis and Inbreeding Depression Study in Tomato [Solanum lycopersicum (L.)]

Author: Hiteksha I. Damor*, Kalyanrao Patil, Sushmita Pusarla, Shiwani and Priyanka Pandya

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Abstract

Tomato is a ‘protective food’ since it is rich in minerals, vitamins, antioxidants and organic acids, along with many nutraceutical benefits. It is well known for its nutraceutical and chemical content which strengthens immune systems and protect against certain diseases. For this reason, there has been recent emphasis on breeding cultivars with nutraceutical value combined with yield parameters. Although, tomato breeding programs are focused mainly on improving fruit yield as well as processing quality traits. One of the most important ways to improve yield and quality traits is heterosis, which is hybrid vigor that results in an improvement in fruit yield with early development and superior quality. Heterosis is a natural phenomenon whereby hybrid offspring of genetically diverse individuals exhibit improved physical and functional characteristics relative to their parents. The purpose of the present study is to obtain genetic information about the extent of hybrid vigour and inb

Keywords

Generation mean analysis, Hybrid vigor, Heterobeltiosis, Residual heterosis, Inbreeding depression.