| Abstract Detail
Breeding and Genetics Haynes, Kathleen G. [1]. Chip Color in a High Specific Gravity Solanum phureja-S. stenotomum Population. HIGH specific gravity and acceptable chip color are important characteristics for chipping potatoes. High specific gravity in U.S. chipping varieties traces back to B5141-6 (‘Lenape’). In an effort to expand the germplasm base for high specific gravity, a long-day adapted diploid hybrid Solanum phureja – S. stenotomum population with high specific gravity was developed. The purpose of this study was to evaluate this population for its chipping potential. The population consisted of 4 clones from each of 72 maternal half-sib families. These were grown in a randomized complete block design in Presque Isle, Maine in 2004 and 2005 along with the check variety ‘Atlantic’. Five tubers from each clone from each replication were processed into chips in early December following 10C storage both years. Individual chips were rated on a 1-10 scale, with < 7 considered an acceptable color. The average chip scores of the diploid clones and Atlantic were 7.3 and 6.8, respectively. The average specific gravities of the diploid clones and Atlantic were 1.099 and 1.091, respectively. Four diploid clones had significantly higher specific gravity and lighter chip color than Atlantic; 93 diploid clones had significantly higher specific gravity and chip color equal to Atlantic. Broad-sense heritability for chip color was 0.68 with a 95% confidence interval of 0.59-0.74. Narrow-sense heritability for chip color was 0.24 + 0.26. Although little breeding progress is expected in this population for chip color, about one-third of the population possesses high specific gravity and acceptable chip color which could be utilized in future crosses.
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1 - United States Department of Agriculture/Agricultural Research Service, Vegetable Laboratory, 10300 Baltimore Ave., Beltsville, MD, 20705
Keywords:
specific gravity
chipping potatoes
heritability
diploid potatoes.
Session: Poster-45
Location: Ballroom CD/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 8:00 AM
Abstract ID:15 |
