Growing habit of Aegilops squarrosa strains collected in Pakistan, Afghanistan and Iran

M. TANAKA and K. YAMASHITA

Laboratory of Genetics and Biological Laboratory Kyoto University, Kyoto, Japan

It was reported in WIS Nos. 1 and 3 that the wild types of Aegilops and Triticum, especially the diploid species, have a winter-growing habit which is considered to be the ancestral type. However, a strain found by Suzuka in Quetta, Pakistan, had a springgrowing habit.

31 out of 176 strains of Aegilops squarrosa collected by Kihara and Yamashita, in Pakistan, Afghanistan and Iran in 1955, have been studied for growing habits in the experimental field in Kyoto (Table 1).

Consequently, the strains showing spring- or intermediate-type have been found only in 4 regions in Afghanistan and Pakistan, and none in Iran (Table 2).

(Received Oct. 15, 1957)