12:15 〜 13:00
[P4-01] Genetic Variation of Rice Germplasm Including Oryza sativa and O. glaberrima in Guinea
Genetic variations of rice including Oryza sativa and O. glaberrima in Guinea were clarified based on the polymorphism data of SSR markers and heading date.
Cluster analyses were performed with the basis of the polymorphism data of 12 SSR markers, and accessions were classified into three cluster groups; Ia, Ib and II. O. glaberrima were mainly classified into cluster Ia, and O. sativa were clusters Ib and II. japonica Group cultivar, Nipponbare, and indica Group cultivar, Kasalath, were categorized into clusters Ib and II, respectively.The days to heading of O. sativa were later thanO. glaberrima. The days to heading in the accessions of cluster II were the latest among three groups.
These results indicated that O. sativa and O. glaberrimawere cultivated widely, and O. glaberrima was still conserved in Guinea. The genetic variation of days to heading in indica Group accessions was wider than those of japonica Group, and the accessions in the late heading type in japonica Group were limited. These of O. glaberrima also showed similar variation, but they included more late heading accessions in compared with these of japonica Group. The accessions of O. sativa were mainly classified into cluster groups Ib and II, and these of O. glaberrima were into cluster group Ia. The genetic variations of O. glaberrima was limited in compare with those of O. sativa, might be corresponded with the results of variation in heading date.
Cluster analyses were performed with the basis of the polymorphism data of 12 SSR markers, and accessions were classified into three cluster groups; Ia, Ib and II. O. glaberrima were mainly classified into cluster Ia, and O. sativa were clusters Ib and II. japonica Group cultivar, Nipponbare, and indica Group cultivar, Kasalath, were categorized into clusters Ib and II, respectively.The days to heading of O. sativa were later thanO. glaberrima. The days to heading in the accessions of cluster II were the latest among three groups.
These results indicated that O. sativa and O. glaberrimawere cultivated widely, and O. glaberrima was still conserved in Guinea. The genetic variation of days to heading in indica Group accessions was wider than those of japonica Group, and the accessions in the late heading type in japonica Group were limited. These of O. glaberrima also showed similar variation, but they included more late heading accessions in compared with these of japonica Group. The accessions of O. sativa were mainly classified into cluster groups Ib and II, and these of O. glaberrima were into cluster group Ia. The genetic variations of O. glaberrima was limited in compare with those of O. sativa, might be corresponded with the results of variation in heading date.