Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-28T00:14:25.060Z Has data issue: false hasContentIssue false
  • English
  • Français

Reconstruction of allopolyploid Brassicas through non-homologous recombination: introgression of resistance to pod shatter in Brassica napus

Published online by Cambridge University Press:  14 April 2009

Shyam Prakash  and
V. L. Chopra
Shyam Prakash
Affiliation:
Biotechnology Centre, Indian Agricultural Research Institute, New Delhi 110012
V. L. Chopra
Affiliation:
Biotechnology Centre, Indian Agricultural Research Institute, New Delhi 110012
Rights & Permissions [Opens in a new window]

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Pod shattering of rapeseed (Brassica napus) causes serious yield loss. Genetic resistance to shattering has been introgressed into B. napus from B. juncea. This followed from allosyndetic pairing between chromosomes of B and C genomes in the interspecific F1 hybrid, B. juncea × B. napus (2n = 37, AABC). The reconstituted B. napus plant showed regular meiosis with 19 bivalents and had pollen and seed fertility of 84 and 23% respectively. An approach is suggested for achieving introgression from monogenomic diploids to digenomic allopolyploids that exploits non-homologous recombination.

Type
Research Article
Information
Genetics Research , Volume 56 , Issue 1 , August 1990 , pp. 1 - 2
Copyright
Copyright © Cambridge University Press 1990

References

Kadkol, G. L., Halloran, G. M. & Macmillian, R. H. (1985). Evaluation of Brassica genotypes for resistance to shatter. II. Variation in siliqua strength within and between accessions. Euphytica 34, 915–919.CrossRefGoogle Scholar
Mizushima, U. (1950 a). Karyogenetic studies of species and genus hybrids in the tribe Brassiceae of Cruciferae. Tohoku Journal of Agricultural Research 1, 1–14.Google Scholar
Mizushima, U. (1950 b). On several artificial allopolyploids obtained in the tribe Brassiceae of Cruciferae. Tohoku Journal of Agricultural Research 1, 15–27.Google Scholar
Mizushima, U. (1980). Genome analysis in Brassica and allied genera. In Brassica Crops and Wild Allies (ed. Tsunoda, S. et al. ), pp. 89–106. Tokyo: Japan Scientific Societies Press.Google Scholar
Morinaga, T. (1929). Interspecific hybridization in Brassica. III. The cytology of F1 hybrids of B. cernua and B. napella. Journal Department of Agriculture Kyushu Imperial University 2, 199–206.Google Scholar
Prakash, S. (1973). Haploidy in Brassica nigra Koch. Euphytica 22, 613–614.CrossRefGoogle Scholar
Prakash, S. & Chopra, V. L. (1988). Introgression of resistance to shattering in Brassica napus from Brassica juncea through non-homologous recombination. Plant Breeding 101, 167–168.Google Scholar
Sasaoka, T. (1930). Karyological observations in different interspecific hybrids of Brassica. Japanese Journal of Genetics 6, 20–32.Google Scholar
Song, K. M., Osborn, T. C. & Williams, P. H. (1988). Brassica taxonomy based on nuclear restriction fragment length polymorphism (RFLPs). I. Genome evolution of diploid and amphidiploid species. Theoretical and Applied Genetics 75, 784–789.Google Scholar
Thompson, K. F. (1956). Production of haploid plants of marrow stem kale. Nature (Lond.) 178, 748.Google Scholar