|St Martin, S|
Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 11/21/2000
Publication Date: N/A
Citation: Interpretive Summary: This is a germplasm release. No Interpretive Summary required.
Technical Abstract: Strong is a maturity group IV determinate semidwarf soybean variety released in 1999. It is a F4-derived line, originally designated as HC94-422, from the cross, Sprite 87 x HC85-6557. HC85-6577 is a determinate semidwarf line from the cross, HC78-350 x HC78-676. HC78-350 is a semidwarf line from the cross, L72U-2567 x Essex. L72U-2567 is an F2-derived line from the cross, Williams x Ransom. HC78-676 is a semidwarf line from the cross, L70T-543G x L74D-619. L70T-543G is an indeterminate line from the cross, L15 x Amsoy 71. L15 is a BC5-derived near isogenic line of Wayne containing the Rps1-a allele from Clark 63. L74D-619 is a semidwarf line from the cross, Williams x Ransom. In high yield environments, Strong has averaged 10% higher yields than the maturity group III semidwarf variety, Charleston and in regional trials, 10% more the the group IV determinate semidwarf variety, Ripley, currently being grown. Like all semidwarf varieties, Strong is recommended only on soils with a history of high yields (>3300 kg/ha) and it should be solid-seeded in 17- to 20cm row spacing at a seeding rate of 750,000 seeds/ha of 90+% germination (675,000 viable seeds/a).