Abstract
Abstract Major objectives of the Northrup King Co. soybean breeding program include high yield potential, resistance to lodging and shattering, good emergence, adequate protein and oil levels, and resistance to diseases and pests, as well as resistance to iron deficiency chlorosis (IDC). Any cultivar released from the program must have a favorable combination of those characteristics which are important in the area of adaptation. The Northrup King soybean research group began actively breeding for resistance to IDC in 1977. Breeding procedures have included screening of advanced experimental lines, crossing resistant x resistant parents, and mass‐selection in populations derived from resistant x susceptible crosses. Performance of two recently released cultivars selected from resistant x susceptible crosses indicate that it is possible to combine high yield levels from one cultivar with IDC resistance from another. Several strains selected from crosses involving highly resistant parents have been evaluated and some show promise for release. However, susceptibility to Phytophthora root rot (Phytophthora megasperma f. sp. glycinea) has been a problem with many of these strains.
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Claims 3
Claim · model-written summary
Two released cultivars from resistant by susceptible crosses combined high yield and IDC resistance.
- Taxon
- soybeans
Glycine maxt0 - Material
- two recently released cultivarse0
- Outcome
- high yield levels from one cultivar with IDC resistance from anothere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Performance of two recently released cultivars selected from resistant x susceptible crosses indicate that it is possible to combine high yield levels from one cultivar with IDC resistance from another.”
t0“soybeans”
Claim · model-written summary
Some strains from highly resistant parents showed promise for release.
- Taxon
- soybeansGlycine maxt0
- Material
- Several strainse0
- Outcome
- promise for releasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Several strains selected from crosses involving highly resistant parents have been evaluated and some show promise for release.”
t0“soybeans”
Claim · model-written summary
Many of these strains had susceptibility to Phytophthora root rot.
- Taxon
- soybeansGlycine maxt0
- Material
- many of these strainse0
- Interactor
- Phytophthora megasperma f. sp. glycinea
Phytophthora megaspermae0pathogen - Outcome
- susceptibility to Phytophthora root rote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, susceptibility to Phytophthora root rot (Phytophthora megasperma f. sp. glycinea) has been a problem with many of these strains.”
t0“soybeans”