Elucidation of Genetics of Fibre Yield and Quality Traits in Tossa Jute (Corchorus olitorius L.) Using Generation Mean Analysis

Vinod Ashok Kale; Suvendu Kumar Roy; Avijit Kundu; S. Vishnupriya; Moumita Chakraborty; Lakshmi Hijam; Bilin Maying; Saikat Das; Sanghamitra Rout; Bandan Thapa; Dinesh Tulsiram Surje

doi:10.23910/1.2023.3372

Authors

Vinod Ashok Kale Eagle Seeds & Biotech Limited, Indore, Madhya Pradesh (452 010), India
Suvendu Kumar Roy Dept. of Genetics and Plant Breeding, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Avijit Kundu AICRN on Potential Crops, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
S. Vishnupriya Dept. of Genetics and Plant Breeding, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Moumita Chakraborty Dept. of Genetics and Plant Breeding, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Lakshmi Hijam Dept. of Genetics and Plant Breeding, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Bilin Maying AICRN on Potential Crops, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Saikat Das AICW&BIP, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal (736 165), India
Sanghamitra Rout Dept. of Genetics and Plant Breeding, CUTM, Paralakhemundi, Odisha (761 211), India
Bandan Thapa Regional Research Station, Hill Zone, Uttar Banga Krishi Viswavidyalaya, Kalimpong, West Bengal (734 316), India
Dinesh Tulsiram Surje Kewalramji Harde College of Agriculture, Chamorshi, Maharashtra (442 603), India

DOI:

https://doi.org/10.23910/1.2023.3372

Keywords:

Tossa jute, epistasis, gene action, generation mean analysis

Abstract

The present study was conducted at Uttar Banga Krishi Vishwavidhyalaiya, Cooch Behar, West Bengal, India during Pre-kharif season (premonsoon from April–July) of 2011, 2012 and 2013. It was observed that the six generations, P₁, P₂, F₁, F₂, BC₁ and BC₂ of all the three crosses, differed significantly for all the traits studied, except fibre percentage in case of all the crosses and basal diameter in case of cross C₃ (OIN 580×JRO 128). Scaling tests as per Mather (1949) revealed the presence of epistatic interactions for almost all the traits except basal diameter in OIN 580×JRO 128. Duplicate epistasis was observed for majority of the traits and there was total absence of complementary epistasis. The joint scaling test confirmed the inadequacy of the additive-dominance model in most of the crosses for majority of the traits, indicating the influence of duplicate epistasis in their expression. It also revealed a significant additive ×additive (i) and dominance×dominance (l) types of epistasis in all three crosses for fibre yield plant^-1, fibre tenacity and fibre fineness. It was thus recommended to opt for pedigree method of conventional breeding with delayed selection to later generations for simultaneous improvement of tossa jute (Corchorus olitorius L.) fibre yield and quality.