ABACA Activities in the Philippines - Unido

Ref. No. CFC/FIGHF/09 CFC/UNIDO/FIDA 46
Screening trial in Leyte showed that varieties Laguis, Inosa and Tangongon were least affected by mosaic
infection recorded as 18.3%, 23.3% and 30%, respectively. The result was in correlation with their reaction
to the disease based on infection rate, incubation period and AUDPC (Fig 15).
Fig 15. Disease progress curve for mosaic infection
in abaca varieties grown in Leyte.
In Davao, Tangongon was least affected by the disease having 65.48% followed by Inosa (77.01%)
and Laguis (77.15%) among the varieties which succumbed to the disease at a much earlier period (14MAP).
The highest percent mosaic infection was exhibited by Musa Tex 51 at 86.36% as well as the biggest
AUDPC (Fig 16).
Fig 16. Disease progress curve for mosaic infection
in abaca varieties grown in Davao.
Results of the ANOVA for the varieties screened in Albay showed that infection rate, incubation
period and AUDPC significantly contributed to the incidence of the mosaic infection based on the result of
regression analysis. The computed coefficient of determination (r 2 ) also indicated 81.93%, 65.49% and
63.83% contribution of the factors which affected disease incidence in Albay , Leyte and Davao (Table 9).