@article{oai:ir.kagoshima-u.ac.jp:00008259,
 author = {KATAYAMA, Tadao C.},
 journal = {南太平洋海域調査研究報告=Occasional papers},
 month = {2016-10-28},
 note = {During the period of November in 1984 and from July to August in 1988, the writer
had trips in Tanzania for collection of the wild and cultivated rice species. During the
trips, 66 strains of wild rice, i.e., 37 of Oryza longistaminata CHEV. et ROEHR., and 29
of Oryza punctata KOTSCHY, were collected, and many populations of them were
observed. Their localities and habitats were reported briefly.
O.longistaminata --- From the analyses of grain characters of the unhusked
grains, average values and the standard deviations in the whole strains were found to be 8.71mm±0.41, 2.34mm±0.17, 1.64mm±0.08, 3.76±0.24, 5.36±0.25 and 1.44±0.07
in length, width, thickness, ratios of length to width, of length to thickness, and of width to thickness, respectively. Most of the data showed larger values in the strains collected in 1988 than those of strains collected in 1984.
In the standard deviations of each strain, i.e., those showing intra-population's
variations, average values and the standard deviations in the whole strains were found to
be 0.52±0.11, 0.19±0.07, 0.12±0.03, 0.37±0.08, 0.48±0.11 and 0.14±0.03 in the
same order, respectively. It was noticed that a lot of data showed the smaller values in the strains collected in 1984 than those of 1988, and the larger values in the strains collected in Tanzania than those of the whole African countries. It was noticed that Accession No.314, collected in pond near Kibaha, showed the smallest standard deviations in 4 characters, i.e., width, L/W, L/T and W/T, through the whole strains.
O.punctata --- Average values and the standard deviations in the whole strains
were found to be 6.01mm±0.28, 2.31mm±0.12, 1.52mm±0.05, 2.62±0.15, 3.98±0.20 and 1.53±0.07, in the same order, respectively. The most group average values of strains collected in 1988 showed the extreme values in comparison with those of 1984.
In the standard deviations of each strain, average values and the standard deviations
in the whole strains were found to be 0.39±0.08, 0.16±0.03, 0.09±0.02, 0.25±0.08,
0.34±0.05 and 0.13±0.02 in the same order, respectively. It was interesting facts that
the two thirds cases of extreme values were found in the strains collected in 1988.
Basing on the analyses of the data in the field survey, morphological, genetical and
ecological characters, geographical, ecotypic and varietal differentiations could be discussed and concluded in the future.},
 pages = {181--192},
 title = {Wild Rice of Tanzania Collected in 1984 and 1988},
 volume = {18},
 year = {}
}