Gene Effects and Heritability for Yield Traits in Tomato (Solanum Lycopersicum L.)

Authors

  • Ravindra Kumar Department of Genetics & Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University Varanasi-221005, India
  • K Srivastava Department of Genetics & Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University Varanasi-221005, India

DOI:

https://doi.org/10.3329/bjb.v50i3.55823

Keywords:

Cross combination, Epistasis, Gene effects, Interaction, Traits

Abstract

Generation mean analysis is a key determinant in designing the appropriate breeding approaches for implementing new desirable character/s in crop varieties and also in studying inheritance of quantitative traits. Parents, F1, F2 and backcrosses exhibited significant digenic interactions in the majority of cross combinations in tomato. Cross combinations and characters indicated the adequacy of simple additive dominance for 50% flowering (CO3 х Floradade, Pant T3 х Azad T5), branches/plant and plant height (CO3 х Floradade, Pant T3 х Kashi Sharad), and fruit/cluster (CO3 х Floradade) indicating absence of non-allelic interactions. Duplicate type of epistasis occurred for 50% flowering (CO3 х Floradade, Kashi Amrit х Kashi Sharad), branches/plant (CO3 х Floradade, Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), plant height (CO3 х Floradade, Pant T3 х Kashi Sharad), fruit/plant (CO3 х Floradade, Pant T3 х Azad T5, Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), fruit weight (CO3 х Floradade, Pant T3 х Azad T5), fruit/cluster (Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), yield/plant (CO3 х Floradade, Punjab Upma х Azad T5, Pant T3 х Kashi Sharad) indicating selection strength should be lenient in the earlier and rapid in later generations because advancement should be through selection. Characters governed by additive components were predominant in fruit/plant and plant height, indicating direct selection for improvement of these traits.

Bangladesh J. Bot. 50(3): 453-465, 2021 (September)

Downloads

Download data is not yet available.
Abstract
50
PDF
39

Downloads

Published

2021-09-29

How to Cite

Kumar, R. ., & Srivastava, K. . (2021). Gene Effects and Heritability for Yield Traits in Tomato (Solanum Lycopersicum L.). Bangladesh Journal of Botany, 50(3), 453–465. https://doi.org/10.3329/bjb.v50i3.55823

Issue

Section

Articles