Inheritance in hexaploid wheat of genes for hairy auricles and hairy leaf sheath derived from Aegilops tauschii Coss.

Inheritance of genes for hairy auricles and hairy leaf sheath of Ae. tausch ii in hexaploid wheat backgrounds (synthetic hexaploid wheat and common whe at varieties) was analyzed. The results indicated that hairy auricles and h airy leaf sheath of Ae. tauschii can be transferred and are expressed in he xaploid wheat. In a synthetic hexaploid wheat ('Ae. tauschii' 188) hairy au ricles was proved to be controlled by a single dominant gene derived from A e. tauschii, which was different from the Pa gene located on chromosome 4BS of common wheat. The hairy leaf sheath phenotype of 'Altar 84/Ae. tauschii 188' was also controlled by a single dominant gene derived from Ae. tausch ii, which is obviously different from the Hls gene in T. dicoccoides. We su ggest to designate the Ae. tauschii genes for hairy auricles and hairy leaf sheath as Pa2 and Hls2, respectively; such genes could be used as useful g enetic markers in common wheat.