PHENOTYPES SPECIFIC TO EACH GROUP AND REGION
Growth survey revealed that the natural population of C. incanathroughout western Kyushu had diverse phenotypes.
On the other hand, since no correlation was shown between these
phenotypes and these environments in Tsushima, suggesting that they
acquired various phenotypes by differentiating independently in each
environment.
Cluster analysis of phenotypes revealed that each group was largely
classified by region.
Groups A and B distributed in Tsushima showed a common tendency for
earlier flowering, more serrated leaves and darker flowers than those in
other areas.
On the other hand, there was no difference in the number of
inflorescences between the two groups, but the plant height tended to be
different between the two groups.
In particular, Group B was the most tallest of all the groups and was
not be distributed outside Tsushima, suggesting a unique phenotypic
group in Tsushima.
Group C and group D distributed in the Nagasaki mainland and the Goto
Islands showed a common tendency, which was that the leaf and flower
colors were brighter and the lateral shoots spread in the horizontal
direction.
However, there were significant differences in flowering period and stem
diameter between the two groups.
The number of florets per cluster was inversely proportional to the
number of florets, and there were significant differences in plant
height and spike length.
Therefore, the C group showed the most shotrest trait with many flower
clusters in long spikes, while the D group showed the trait with few
flower clusters with many florets in short spikes.
Group E distributed in the Koshikijima Islands had slower flowering,
larger flower buds, larger flower clusters, wider leaves with less
serrated edges, and smaller plant width than those in other areas.
These phenotypes are unique to the Koshikijima Islands, which have not
been observed in other regions.
Groups B and D were common in each region in that they were taller than
the other group.
Group B, however, showed a tendency to elongate in the vertical
direction because of the small number of lateral branches and the long
spike length relative to the distance from the ground to the first
inflorescence, whereas group D showed a tendency to elongate in the
horizontal direction because of the opposite characteristics.
This Difference in AN flower colMmor was common among the groups in each
region, suggesting that it is a characteristic of each region.