Intraspecific crossing between diploid species was successful
and produced normal plants. However, when F. nilgerrensis was
used as seed parent or pollen parent in interspecific hybridization
with F. vesca species, crossing was not successful and no seed was
produced. The interspecific hybridization between ‘Akihime’ and
‘Whiteberry’, which differ in ploidy level, produced only one abnormal
pentaploid plant that was weak and did not bloom (Fig. 2B).
This result is in agreement with the findings of Hancock and Luby
(1993), which showed that interspecific hybridization between F.
nilgerrensis and F. vesca species produces relatively smaller and
weaker plants