Assessment of Musa genetic resources for their host reaction to Foc TR4

In China, there is now an on going evaluation of 14 accessions from the International Transit Center (ITC) for Musa genetic resources. The project on the assessment of Musa genetic resources for their host reaction to Foc TR4, towards understanding the genetic base of host-pathogen interactions  is now on its way to investigate the host reaction of Musa genetic resources to Foc TR4 and identify possible sources of resistance within the Musa genepool. A total of 14 accessions from ITC were planted in the field in 2 locations in China, namely: Guangdong and Yunnan Province.

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To date, Fusarium Wilt symptoms were observed in most Cavendish varieties (except GCTCV-119). Highest infection was observed in ‘Williams’ at 38%.  ‘Guangfen No.1’ and ‘Baxi’, local Cavendisg varieties showed 20% and 16.7% infection, respectively. ‘Ibwi’ from the EAHB sub group has 15% infection. None of plantains and the other EAHB varieties showed infection. For the other site located in Yunnan, no symptoms of Foc were observed, although there are some leaf spots and virus diseases. All the plants in Yunnan are not yet flowering. The cropping cycle for EAHB and plantains (more than 15 months) are longer than the Cavendish varieties, there may be more plants infected during their growth stage, especially when they are flowering.

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Just last July 9, Dr. Gus Molina visited the Guandong Academy of Agricultural Sciences (GDAAS) with Dr. Yi Ganjun and his research staff and students to discuss the on-going collaboration and future project activities

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