| Spring- and winter-growing habit in Aegilops squarrosa
var. typica Masatake TANAKA Laboratory of Genetics, Faculty of Agriculture, Kyoto University, Kyoto, Japan In WIS No. 1, the spring- and winter-growing habits of many species and varieties of Aegilops and Triticum were listed. Generally speaking, the wild types, especially the diploid species, have the winter-growing habit. Therefore, it may be postulated that the ancestral type of Aegilops and Triticum is of the winter-growing type. Recently, however, the spring-growing habit was found in one strain of Ae. squarrosa var. typica (DD-species). The result of the observations are as follows. Aegilops squarrosa var. typica: No. 1, from Derbent (Caucasus): winter-growing habit No. 2, from Palestine: winter-growing habit No. 3, from Tashkent (Turkestan): winter-growing habit No. 4, from Quetta (Pakistan): spring-growing habit |