ISSN:
1432-2242
Keywords:
Key words Potato dihaploids
;
Principal component analysis
;
Dihaploid induction
;
Microsatellite
;
Isozyme analysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A number of recent studies have provided evidence that potato dihaploids (S. tuberosum) contain and express DNA from the male (dihaploid inducer) parent, S. phureja. The importance of this for breeding programmes that use dihaploid potatoes is to some extent dependent upon whether the S. phureja DNA influences dihaploid morphology. In the present study, 21 characters were used to compare the morphology of six dihaploids with those of their parents: S. tuberosum (cvs `Pentland Dell' and `Pentland Crown') and S. phureja (IVP48). Characteristics of S. phureja were found in all of the dihaploids examined. In principal component analyses, dihaploids formed intermediate groupings positioned between those of the parents, although much closer to S. tuberosum. It is concluded there is evidence that DNA originating from the dihaploid inducer can affect the morphology of potato dihaploids. Implications of the findings are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s001220050406
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