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.