@article{oai:ir.kagoshima-u.ac.jp:00011216,
 author = {KATAYAMA, Tadao C.},
 journal = {南太平洋海域調査研究報告=Occasional papers},
 month = {2016-10-31},
 note = {During the period from May to August in 1988, the writer was sent to 2 countries of
Africa, i.e., Madagascar and Tanzania, for collection of the wild and cultivated rices.
During the trip, 109 strains of wild rice, i.e., 47 and 36 strains of Oryza longistaminata CHEV. et ROEHR. in Madagascar and Tanzania, respectively, and 26 strains of Oryza punctata KOTSCHY in Tanzania, were collected, and many populations of those were
observed. Their localities and habitats were reported briefly.
From the analyses of grain characters of the unhusked grains, average values and
the standard deviations in the whole strains were found to be 8.26mm±0.61, 2.29mm±0.19, 1.57mm±0.11, 3.64±0.26, 5.31±0.28 and 1.47±0.08 in length, width, thickness, ratios of length to width, of length to thickness, and of width to thickness, respectively, in case of the Oryza longistaminata. Strains W51, collected in Ifakara, and W69 in Ibada, Tanzania, showed larger values in the respective characters. It is noticeable that values of group averages in view of practical data in 5 characters were clearly smaller in
strains collected in Madagascar than those in Tanzania, excepting for the ratio of width
to thickness (W/T). On the contrary, values of group averages in view of standard deviations were clearly larger in strains collected in Madagascar than those in Tanzania
through the whole of 6 characters.
In case of Oryza punctata, average values and the standard deviations in the whole
strains were found to be 5.96mm±0.25, 2.29mm±0.11, 1.51mm±0.05, 2.62±0.15,
3.96±0.20 and 1.52±0.07, respectively, in the same order. It was noticed that the
populations of W98 collected in Upenja and W102 in Kasole, Tanzania, showed very
large values in length and width.
Basing on the analyses of the data obtained in field surveies, morphological, genetical
and ecological characters, geographical, ecotypic and varietal differentiations could
be discussed to give us some conclusions in the near future.},
 pages = {1--17},
 title = {Distribution and Grain Morphology of Wild Rice Collected in Madagascar and Tanzania, 1988},
 volume = {18},
 year = {}
}