期刊
AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE
卷 46, 期 1, 页码 107-113出版社
CSIRO PUBLISHING
DOI: 10.1071/EA04175
关键词
mutation breeding; somaclonal variation; tissue culture
'Dwarf Parfitt', an extra-dwarf Cavendish cultivar with resistance to subtropical race 4 Fusarium oxysporum f. sp. cubense (Foc), was gamma irradiated at a dose of 20 Gy and putative mutants were recovered with improved agronomic characteristics. Further screening of putative mutants for improved yield and fruit size, as well as a degree of resistance to fusarium wilt, led to the selection of a line (DPM25) with improved productivity when grown on soils infested with subtropical race 4 Foc. DPM25 was equal to the industry standard, 'Williams', in every agronomic trait measured and it consistently showed a lower incidence of fusarium wilt. Further improvement of field resistance to race 4 Foc is needed in DPM25 and further cycles of mutation induction and selection is an option discussed.
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