Document Detail

Glycoalkaloids and acclimation capacity of hybrids between Solanum tuberosum and the incongruent hardy species Solanum commersonii.
MedLine Citation:
PMID:  12898029     Owner:  NLM     Status:  MEDLINE    
F(1) and backcross hybrids between sexually incompatible species Solanum commersonii and Solanum tuberosum were characterized for glycoalkaloid content and capacity to cold acclimate. Glycoalkaloid (GA) analysis revealed that F(1) triploids and BC(1) pentaploids contained the glycoalkaloids of both parents. In BC(2) (near) tetraploids the situation was different, in that some hybrids produced the GAs of both parents, whereas others contained only the GAs of S. tuberosum. This suggested that the GAs from S. commersonii may be lost rapidly, and that they may have a simple genetic control. The total tuber GA content of BC(1) and BC(2) groups averaged quite acceptable levels (165.9 mg/kg in BC(1) and 192.8 mg/kg in BC(2)), with six genotypes having a GA content <200 mg/kg fresh weight. The F(1) triploid hybrids expressed a capacity to cold acclimate similar to S. commersonii, whereas BC(1) and BC(2) genotypes generally displayed an acclimation capacity higher than the sensitive parent but lower than S. commersonii. However, one BC(1) and two BC(2) genotypes with an acclimation capacity as high as S. commersonii were identified. The polar lipid fatty acid composition in S. commersonii and its hybrid derivatives showed that, following acclimation, there was a significant increase in 18:3. Correlation analysis between the capacity to cold acclimate and the increase in 18:3 was significant, suggesting that the increase in 18:3 can be used as a biochemical marker for the assisted selection of cold-acclimating genotypes in segregating populations.
D Carputo; A Terra; A Barone; F Esposito; V Fogliano; L Monti; L Frusciante
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2003-07-29
Journal Detail:
Title:  TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik     Volume:  107     ISSN:  0040-5752     ISO Abbreviation:  Theor. Appl. Genet.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-07     Completed Date:  2004-02-17     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0145600     Medline TA:  Theor Appl Genet     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1187-94     Citation Subset:  IM    
Department of Soil, Plant and Environmental Sciences (DISSPA), University of Naples Federico II, Via Università 100, 80055 Portici, Italy.
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MeSH Terms
Chromosome Segregation
Cold Temperature
Crosses, Genetic
Fatty Acids / metabolism
Hybrid Cells*
Solanaceous Alkaloids / analysis*
Solanum tuberosum / chemistry*,  genetics*
Reg. No./Substance:
0/Fatty Acids; 0/Solanaceous Alkaloids

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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