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GENETICS OF RAPD MARKERS IN SWEETPOTATO

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 1995Publisher:American Society for Horticultural ScienceJournal:HortScience, volume 30, pages 442b-442 (issn: 0018-5345, eissn: 2327-9834,

Authors: Paul G. Thompson; Liang L. Hong; Kittipat Ukoskit;

doi: 10.21273/hortsci.30.3.442b

GENETICS OF RAPD MARKERS IN SWEETPOTATO

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Abstract

Parents and progeny of four biparental crosses were analyzed for RAPD marker segregation. A range of 57 to 122 primers were tested in each cross, with an average of 82. Average polymorphic primers and band numbers were 22 and 53, respectively. Of the 212 polymorphic bands, phenotypic segregation ratios were as follows: 133 fitted 1 dominant: 1 recessive, 58 fitted 3:1, 11 fitted ratios 4:1 to 19:1 and 10 were distorted. The 1:1 and 3:1 ratios were expected for either diploid or hexaploid segregation, and the 4:1 to 19:1 are exclusive to hexploid. A total of 14 pairs of markers were linked at map distances ranging from 2.1 to 36.5 cM. One common pair of linked markers was found in two separate crosses.

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