The production and characterization of a BoFLC2 introgressed Brassica rapa by repeated backcrossing to an F1

Daniel J. Shea; Yuki Tomaru; Etsuko Itabashi; Yuri Nakamura; Toshio Miyazaki; Tomohiro Kakizaki; Tonu Nazmoon Naher; Motoki Shimizu; Ryo Fujimoto; Eigo Fukai; Keiichi Okazaki

doi:10.1270/jsbbs.17115

Research Papers

The production and characterization of a BoFLC2 introgressed Brassica rapa by repeated backcrossing to an F₁

Daniel J. Shea, Yuki Tomaru, Etsuko Itabashi, Yuri Nakamura, Toshio Miyazaki, Tomohiro Kakizaki, Tonu Nazmoon Naher, Motoki Shimizu, Ryo Fujimoto, Eigo Fukai, Keiichi Okazaki

Author information

Daniel J. Shea
Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University
Yuki Tomaru
Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University
Etsuko Itabashi
National Institute of Vegetable and Tea Science
Yuri Nakamura
Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University
Toshio Miyazaki
Nippon Norin Seed Co.
Tomohiro Kakizaki
National Institute of Vegetable and Tea Science
Tonu Nazmoon Naher
Sher-e-Bangla Agricultural University
Motoki Shimizu
Iwate Biotechnology Research Center
Ryo Fujimoto
Graduate School of Agricultural Science, Kobe University
Eigo Fukai
Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University
Keiichi Okazaki Corresponding author
Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University

Keywords: Brassica oleracea, Brassica rapa, flowering time, introgression, vernalization, chromosome segment substitution line

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Supplementary material

2018 Volume 68 Issue 3 Pages 316-325

DOI https://doi.org/10.1270/jsbbs.17115

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Abstract

Flowering time is an important agronomic trait for Brassica rapa crops, and previous breeding work in Brassica has successfully transmitted other important agronomic traits from donor species. However, there has been no previous attempts to produce hybrids replacing the original Brassica FLC alleles with alien FLC alleles. In this paper, we introduce the creation of a chromosome substitution line (CSSL) containing a homozygous introgression of Flowering Locus C from Brassica oleracea (BoFLC2) into a B. rapa genomic background, and characterize the CSSL line with respect to the parental cultivars. The preferential transmission of alien chromosome inheritance and the pattern of transmission observed during the production of the CSSLs are also discussed.

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