| Abstract Detail
Breeding and Genetics Navarro, Felix [1], Bowen, Bryan D. [1], Groza, Horia I. [2], Jiang, Jiming [3], Palta, Jiwan P. [4]. Pedigree and Performance of Improved Varieties and Breeding Lines of Potato. PERFORMANCE of improved tetraploid potato varieties and breeding lines is greatly influenced by their genetic background. Breeding value, combining ability, trait heritability and inbreeding depression are among genetic variables that can affect performance of agronomic and tuber quality traits. Performance of 171 breeding lines and standard cultivars used in the potato breeding program of the University of Wisconsin was analyzed and associated to their pedigrees, which were obtained from breeders’ records and public databases. Best linear unbiased predictors of performance were obtained, and variation for yield, specific gravity, tuber size and shape, quality and frying was associated to the use of specific parental lines. For example, from 2003-2005, the use Chipeta (AC80545-1) as a parent was associated to high yield, round shape and average size; however, direct frying quality from 42ºF storage at three and six month similar to Atlantic but specific gravity was lower than average among chipping lines. The best frying quality out of 42ºF storage at three and six month was associated to the use of ND2471-8; this line also contributed significantly higher than average size and specific gravity to its progenies, which were round oval; however, yield was depressed. Among russet lines, the use of W1005-rus improved yield, specific gravity and frying. This strategy is an attempt to know better the breeding value and combining ability of lines used in the University of Wisconsin potato breeding program, and results will be used to help select parents to generate improved breeding lines.
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Related Links:
UW Potato Breeding Program
1 - University of Wisconsin - Madison, Rhinelander Agricultural Research Station, 4181 Camp Bryn Afon Road, Rhinelander, WI, 54501, United States
2 - 3201 Murchison Way, Carmichael, CA, 95608, USA
3 - University of Wisconsin - Madison, Horticulture, 1575 Linden Drive, Madison, WI, 54501, United States
4 - University of Wisconsin, Department of Horticulture, 1575 Linden Drive, Madison, WI, 53706, USA
Keywords:
potato breeding
Population Genetics
tetraploid.
Session: PAA08-7
Location: Hall of Ideas Room G/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 10:30 AM
Abstract ID:420 |
