Development and Evaluation of Impermeable Seed Coats for Preserving Soybean Seed Quality1
- E. E. Hartwig and
- H. C. Potts2
Advanced generation soybean [Glycine max (L.) Merr.J breeding lines have been developed that have impermeable seed coats. The donor parent for impermeable seed coats was the wild soybean [Glycine soja Sieb. and Zucc.]. A group of 11 impermeable seed coat lines along with the parent 'Forrest' were grown at five southeastern USA locations to further evaluate the effectiveness of the character for maintaining seed quality. Center rows of 4-row plots were harvested at maturity, and a border row was harvested 4 to 6 weeks later. Seeds from the delayed harvest were exposed to prolonged warm, rainy weather. At Starkville, MS, rain fell on 18 days with a total of 220 mm during October. Total viable seeds from Forrest were 96% for the early harvest and 5% for the delayed harvest. for D81-9776, one of the best impermeable seed coated lines, total viable seeds for early and late harvest were 95 and 86%, respectively. From another group of material, one line exhibited 100% viable seeds after 6 weeks exposure to warm, rainy weather, while ‘Epps’ had only 27% viable seeds.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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