Towards the development of a Cavendish banana resistant to race 4 of fusarium wilt:: gamma irradiation of micropropagated Dwarf Parfitt (Musa spp., AAA group, Cavendish subgroup)
Towards the development of a Cavendish banana resistant to race 4 of fusarium wilt:: gamma irradiation of micropropagated Dwarf Parfitt (Musa spp., AAA group, Cavendish subgroup)
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DOI：
10.1071/ea04175
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发表时间：
2006-01-01
影响因子：
--
通讯作者：
Pegg, KG
中科院分区：
文献类型：
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作者：
Smith, MK;Hamill, SD;Pegg, KG
“Dwarf Parfitt”，一种超矮卡文迪什品种，对亚热带小种 4 尖孢镰刀菌 f 具有抗性。 sp。 cubense (Foc)，以 20 Gy 的剂量进行伽马射线照射，并恢复了具有改良农艺特性的推定突变体。进一步筛选假定的突变体以提高产量和果实大小，以及一定程度的抗枯萎病能力，最终选择了一个在感染亚热带小种 4 Foc 的土壤上生长时生产力提高的品系 (DPM25)。 DPM25 在测量的每个农艺性状中均等于行业标准“Williams”，并且始终显示镰刀菌枯萎病发生率较低。 DPM25 需要进一步提高对小种 4 Foc 的田间抗性，并且讨论了进一步的突变诱导和选择循环。
'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.