Breeding Brassica juncea hybrids with higher seed weight and oil content: Defining criteria for selection of parents.

Autor: Sharma M; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Vasisth P; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Dhanasekaran G; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Meena ML; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Limbalkar OM; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India.; ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, Jharkhand, India., Sahoo BC; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Kumar N; Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar, Haryana, India., Nanjundan J; ICAR-Indian Agricultural Research Institute, Regional Station, Wellington, India., Singh R; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India., Avtar R; Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar, Haryana, India., Watts A; ICAR-National Institute for Plant Biotechnology, New Delhi, India., Singh N; Division of Genetics, Indian Council of Agricultural Research (ICAR)-Indian Agricultural Research Institute, New Delhi, India.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Nov 20; Vol. 10 (23), pp. e40555. Date of Electronic Publication: 2024 Nov 20 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e40555
Abstrakt: Most of the released high-yielding hybrids of Brassica juncea have a low 1000-seed weight (TSW) with no increment in the percent oil content (OC), and, therefore, these hybrids have poor acceptance among the farmers in India. It is, thus, imperative to understand the genetic basis of these traits and deploy them in commercial hybrid breeding programs. The present study utilized a set of 15 diverse B. juncea genotypes with TSW and OC ranging from 1.32 to 8.26 g and 31.93-43.39 %, respectively, to generate 210 hybrids following a full diallel mating scheme. These hybrids along with their parents, were evaluated in three different environments. Inheritance of TSW suggests the predominance of additive gene action, whereas non-additive gene action was observed to regulate OC. Further, TSW and OC were reported to be influenced by maternal and non-maternal effects, respectively. Parents with bold seeds viz., NPJ 253, RH 761 and EC 223389 were identified as good general combiners for both the traits. Hybrid generated from the cross NPJ 253 x NPJ 161, with both parents having high seed weights, exhibited the highest mean values (8.43 g) and heterobeltiosis (17.2 %) for TSW. Whereas, hybrid between parents NPJ 253 and IC 426372, possessing high and low seed weights, respectively, observed the highest mean value (44.95 %) and heterobeltiosis (14.89 %) for OC. Keeping both TSW and OC together, hybrids viz., NPJ 253 x EC 223389 (H1), NPJ 253 x NPJ 161 (H2) and NPJ 253 x Pusa Tarak (H4) were identified as promising using the Multi-trait Genotype-Ideotype Distance Index. Lines with higher TSW and better combining ability for OC shall be converted to male and/or female lines for generating commercial hybrids. The scheme for deploying higher seed weight and improved oil content in B. juncea hybrids is discussed.
Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Naveen Singh reports financial support and administrative support were provided by 10.13039/501100001503ICAR - 10.13039/501100005384Indian Agricultural Research Institute. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 Published by Elsevier Ltd.)
Databáze: MEDLINE
načítá se...