Abstract: The present invention relates to polypeptides, and polynucleotides encoding therefor, which influence seed dormancy in cereals such as wheat and barley. In particular, the present invention relates to polypeptides with ABA 8?-hydroxylase activity, and polynucleotides encoding these proteins. Also provided are cereal plants which produce seeds that have altered rates of germination, and/or levels of dormancy, when compared to seeds from wild-type plants, as well as methods of producing such plants.

Abstract: The present invention relates to polypeptides, and polynucleotides encoding therefor, which influence seed dormancy in cereals such as wheat and barley. In particular, the present invention relates to polypeptides with ABA 8?-hydroxylase activity, and polynucleotides encoding these proteins. Also provided are cereal plants which produce seeds that have altered rates of germination, and/or levels of dormancy, when compared to seeds from wild-type plants, as well as methods of producing such plants.

Abstract: The invention relates generally to genetic constructs which are useful in regulating the synthesis of malting enzymes in plants. More particularly, the present invention relates to nucleic acid molecules encoding gibberellin-regulated MYB polypeptides, for example the barley and rice GAMyb genetic sequences and transcriptionally-modulating parts and/or immunologically interactive parts thereof. The genetic sequences of the invention are introduced into plant cells, in particular monocotyledonous plant cells such as those derived from barley, wheat, maize, rye, rice or sorghum, where their expression in either the sense or antisense orientation modulates the expression of hydrolytic malting enzymes which are normally regulated by GAMYB polypeptides. The genetic sequences of the invention are therefore useful in the production of plants with altered malting properties.