Dominant earliness mutation and gene in sunflower...

Details Dominant earliness mutation and gene in sunflower... Dominant earliness mutation and gene in sunflower...

C - Chemistry, Metallurgy

12

N

C12N 15/29 (2006.01) A01H 1/00 (2006.01) A01H 1/02 (2006.01) A01H 5/00 (2006.01) C07H 21/04 (2006.01) C12N 5/04 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2715354

The subject invention relates in part to the discovery of a spontaneous sunflower mutation. The subject invention involves an 'early' mutation and related inbred/hybrid development. The subject invention further provides a single dominant gene that confers earliness in sunflower inbred isolines and near isogenic hybrids. There is no known prior teaching or suggestion of this gene's utility for hybrid development in the industry. The subject indention also provides a new and distinctive sunflower inbred line designated H 120R. The invention includes seeds that possess this mutated gene, plants produced by growing these seeds, and progeny thereof that possess this mutated gene and the associated earliness trait. The subject invention also includes methods for producing such sunflower seeds and plants, including inbreds and hybrids. Such plants can be produced by, for example, crossing such an inbred line with itself or with another sunflower line.

La présente invention concerne en partie la découverte dune mutation spontanée du tournesol. Linvention concerne une mutation « précoce » et le développement consanguin/hybride associé. Linvention concerne en outre un gène dominant unique qui confère une précocité aux isolignes consanguines et aux hybrides isogéniques proches du tournesol. Il nexiste pas denseignement ou de proposition antérieur connu de lutilité de ce gène pour un développement hybride dans lindustrie. Linvention concerne également une nouvelle lignée consanguine distincte de tournesol appelée H 120R. Linvention concerne des graines qui présentent ce gène muté, des plants produits par la croissance de ces graines et leur descendance qui possèdent ce gène muté et la caractéristique associée de précocité. Linvention concerne également des procédés de production de graines et de plants de tournesols, y compris les lignées consanguines et hybrides. De tels plants peuvent être produits, par exemple, par le croisement dune telle lignée consanguine avec elle-même ou avec une autre lignée de tournesols.

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