Table 1.
Plant materials
| Landrace | Abbreviation | Location perfecture | Ecotypea | JP No.a |
|---|---|---|---|---|
| ASAHI ZAIRAI | ASA | Gifu | Autumn | 41819 |
| MIYAZAKI ZAIRAI | MIZ | Miyazaki | Autumn | 48617 |
| KANOYA ZAIRAI | KAN | Kagoshima | Intermediate summer | 41846 |
| ZAIRAISHU (GONOHE) | GON | Aomori | Intermediate summer | 42885 |
| SOTOYAMA ZAIRAI | SOT | Iwate | Summer | 36192 |
| IZUMO (SHIMANE) | IZU | Shimane | Summer | 48595 |
| BOTANSOBAb | BOT | Hokkaido | Summer | 53898 |
| OONO ZAIRAI | OON | Ibaraki | Unkown | 36197 |
| KUZUU ZAIRAI | KUZ | Tochigi | Unkown | 36207 |
| KAIDA ZAIRAI | KAI | Nagano | Unkown | 41815 |
| TANNO HIUSHINAI | TAN | Hokkaido | Unkown | 72500 |
| MIYAKO ZAIRAI | MIK | Fukushima | Unkown | Tsukuba Univ.c |
| ASAHIMURA ZAIRAI | ASM | Niigata | Unkown | Tsukuba Univ.c |
| YABAKEI ZAIRAI | YAB | Oita | Unkown | Tsukuba Univ.c |
| IYA ZAIRAI | IYA | Tokushima | Unkown | Tsukuba Univ.c |
a From Genebank Project, NARO.
b Cultivar bred at the Hokkaido Agricultural Research Center, NARO.
c Population maintained at the University of Tsukuba.