Abstract
1. In this investigation, the F1 plants raised between Triticum pyramidale and Secale fragile were studied genetically.
2. In the young stage until the end of the winter, the F1 plants had short narrow and dark green leaves richly haired on the surface of them. These characteristics seem due to S. fragile. At the ripening stage, the external characteristics of the F1 plants resembled rather closely to the pollen parent than being the intermediate of both parents (Table 2, Fig. 1). The external characteristics undoubtedly show that they are the F1 hybrids between T. pyramidale×S. fragile though the chromosomes have not been observed.
3. The spikelets of the F1 plants were not brittle even in the ripening stage, while they are very brittle in the case of the F1 plants raised between Emmer wheat and wild Secale, as africanum or montanum.
4. No pistile and stamen are found in all the flowers of any spikelet in the F1 hybrids.
