Semi-dwarf hybrid sunflower seed and plant and method of producing hybrid seed
AssigneeRed River Commodities, Inc.
InventorFreeman K. Johnson
Life of this patent
Estimating the term…
Abstract
This invention relates to a novel semi-dwarf hybrid sunflower (Helianthus annuus var. macrocarpus (DC.) Ckll. (herein H. annuus) seed and a method of producing the hybrid seed. The hybrid sunflower seed upon growth yields a semi-dwarf sunflower plant having a reduced internode length. The hybrid seed is produced by cross pollinating a pair of parent plants P.sub.1 and P.sub.2 wherein, in at least one parent substantially all pollen is nonfunctional and at least one parent has gametes with nuclei carrying at least one dominant gene for reduced internode length.
Claims24
A method of producing semi-dwarf hybrid sunflower seeds which will produce sunflowers with reduced internode length under normal growing conditions, which comprises:
- (a) growing a pair of parent plants (P.sub.1 and P.sub.2) wherein in at least one parent substantially all pollen is nonfunctional and at least one parent has gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- (b) cross pollinating the plants (P.sub.1 +P.sub.2) to produce hybrid seeds F.sub.1 ;
- and
- (c) harvesting the hybrid seeds.
A method of producing semi-dwarf hybrid sunflower seeds which will produce sunflowers with reduced internode length under normal growing conditions, which comprises:
- (a) growing a female seed parent plant (P.sub.1) in which substantially all pollen is nonfunctional, having gametes with nuclei which carry a gene for standard internode length (df);
- (b) growing a male pollen bearing parent plant (P.sub.2) having gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- cross pollinating the plants (P.sub.1 and P.sub.2) to produce hybrid seeds F.sub.1 ;
- and
- (d) harvesting the hybrid seeds.
A method of producing semi-dwarf hybrid sunflower seeds which will produce sunflower with reduced internode length under normal growing conditions, which comprises:
- (a) growing a female seed parent plant (P.sub.1) in which substantially all pollen is nonfunctional, having gametes with nuclei which carry as least one dominant gene for reduced internode length (Df);
- (b) growing a male pollen bearing parent plant (P.sub.2) having gametes with nuclei which carry a gene for standard internode length (df);
- (c) cross pollinating the plants (P.sub.1 and P.sub.2) to produce hybrid seeds F.sub.1 ;
- and
- (d) harvesting the hybrid seeds.
A method of producing semi-dwarf hybrid sunflower seeds which will produce sunflower with reduced internode length under normal growing conditions, which comprises:
- (a) growing a female seed parent plant (P.sub.1) in which substantially all pollen is nonfunctional, having gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- (b) growing a male pollen bearing parent plant (P.sub.2) having gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- (c) cross pollinating the plants (P.sub.1 and P.sub.2) to produce hybrid seeds F.sub.1 ;
- and
- (d) harvesting the hybrid seeds.
A method of producing semi-dwarf inbred sunflower seeds which will produce sunflowers with reduced internode length under normal growth conditions, which comprises:
- (a) growing a plant having gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- (b) sib pollinating the plant;
- and
- (c) harvesting the hybrid seed.
A semi-dwarf hybrid sunflower seed which upon growth yields a sunflower plant having a reduced internode length, the hybrid seed having been produced by cross pollinating a pair of parent plants (P.sub.1 and P.sub.2), wherein in at least one parent substantially all pollen is nonfunctional and at least one parent has gametes with nuclei which carry at least one dominant gene for reduced internode length (Df).
A semi-dwarf hybrid sunflower seed which upon growth yields a sunflower plant having a reduced internode length, the hybrid seed having been produced by cross pollinating two sunflower plants, wherein the female seed parent plant (P.sub.1) produces pollen which is substantially all nonfunctional, and P.sub.1 has gametes with nuclei which carry a gene for standard internode length (df);
- and the other parent plant P.sub.2 having gametes with nuclei carrying at least one dominant gene for reduced internode length.
A semi-dwarf hybrid sunflower seed which upon growth yields a sunflower plant having a reduced internode length, the hybrid seed having been produced by cross pollinating two sunflower plants, wherein the female seed parent plant (P.sub.1) produces pollen which is substantially all nonfunctional, and P.sub.1 has gametes with nuclei which carry a dominant gene for reduced internode length (Df);
- and the other parent plant P.sub.2 having has gametes with nuclei carrying a gene for standard internode length.
A semi-dwarf hybrid sunflower seed which upon growth yields a sunflower plant having a reduced internode length, the hybrid seed having been produced by cross pollinating two sunflower plants, wherein the female seed parent plant (P.sub.1) produces pollen which is substantially all nonfunctional, and P.sub.1 has gametes with nuclei which carry at least one dominant gene for reduced internode length (Df);
- and the other parent plant P.sub.2 having has gametes with nuclei carrying at least one dominant gene for reduced internode length (Df).
A first generation semi-dwarf hybrid sunflower plant of reduced internode length, the hybrid sunflower plant having been grown from the seed from the cross pollination of a pair of parent plants (P.sub.1 and P.sub.2) wherein in at least one parent substantially all pollen is nonfunctional and at least one parent has gametes with nuclei which carry at least one dominant gene for reduced internode length (Df).
A method of producing seeds of a semi-dwarf sunflower variety which will produce sunflower with reduced internode length in successive generations under normal growing conditions, which comprises:
- (a) growing at least two inbred lines each having gametes with nuclei carrying at least one dominant gene for reduced internode length;
- (b) interpollinating the inbred lines from step (a) for at least two generations;
- and
- (c) harvesting the seeds.
A method of producing seeds of a semi-dwarf sunflower variety which will produce sunflower with reduced internode length in successive generations under normal growing conditions, which comprises:
- (a) growing at least two hybrid lines each having gametes with nuclei carrying at least one dominant gene for reduced internode length;
- (b) interpollinating the hybrid lines from step (a) for at least two generations;
- and
- (c) harvesting the seeds.
Dependencies are inferred from the claim text.