| 1. RESEARCH NOTES Aegilops triuncialis from Afghanistan and Iran H. KIHARA, K. YAMASHITA and M. TANAKA National Institute of Genetics, Misima and Kyoto University, Kyoto, Japan a. Collected materials and geographical distribution After EIG (1929) Ae. triuncialis L. (2n=28, genome symbol CCCuCu after KIHARA), a tetraploid species, is divided into two subspecies, namely ssb. eu-triuncialis EIG and ssp. orientalis EIG. Ssp. eu-triuncialis has 2 varieties, typica and constantinopolitana, while ssp. orientalis has 3 varieties, assyriaca, persica and anathera. After EIG(1929), the geographical distribution of Ae. triuncialis is very wide. But it does not occur in the south. Fig. 17 in EIG (1929) shows that var. typica covers the whole area of the distribution of this species, while var. constantinopolitana is found in a very limited area. Three varieties of ssp. orientalis are found only in the Orient. Among those three varieties, persica, has the largest area extending from Iran to Afghanistan, while var. assyriaca has a very limited distribution in Assyria in eastern Turkey. Var. typica was collected in the Pul-i-Khumri, Tehran and Tabriz regions and also in a very small area of the Gorgan region, but was not found in the coastal area of the Caspian Sea. Var. anathera was not collected in any region. Var. persica was found only in the Maimana region, where var. typica was not found. Var. assyriaca was also found unexpectedly in this region. Two habitats gave the pure populations of var. persica, two habitats the mixed populations of vars. persica, and assyriaca, and six habitats the pure populations of var. assyriaca. The populations of var. persica were smaller than expected while ssp. orientalis occurred abundantly in this region. |
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