Linked Life Data

15864525

Source:http://linkedlifedata.com/resource/pubmed/id/15864525

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-6-28
pubmed:abstractText
The inheritance of resistance to Xylella fastidiosa (Xf), the bacterium which causes Pierce's disease (PD) in grapevines, was evaluated within a factorial mating design consisting of 16 full-sib families with resistance derived from Vitis arizonica interspecific hybrids. Measurements of disease progression under greenhouse conditions were based on quantitative assessment of Xf populations in stem tissues and on three phenotypic scores: leaf scorch, a cane maturation index (CMI) and an index that incorporated shoot stunting into the cane maturation index (CMSSI). Measurement of bacterial populations yielded the highest broad-sense heritability for resistance on a genotype mean basis (0.97), indicating that this measure of resistance was the least effected by environmental variation. Narrow-sense heritability of PD resistance was moderately high and measured 0.52, 0.60, 0.63 and 0.37 for Xf populations, CMI scores, CMSSI scores and leaf scorch values, respectively. Complex segregation analysis using the computer program Statistical Analysis for Genetic Epidemiology (SAGE: ) strongly indicated the existence of a major gene for PD resistance, which accounted for 91% of the total genetic variance. Conversion of the quantitative data into qualitative resistance levels and evaluation via a chi-square analysis showed that 15 of the 16 families segregated in accordance with a single gene hypothesis with a dominant allele controlling PD resistance. These data indicate that the trait should be relatively easy to pass on from parents to progeny in a breeding program for the development of PD-resistant grape cultivars, particularly when selection is based on cane maturation scores or stem Xf populations.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0040-5752
pubmed:author
pubmed:issnType
Print
pubmed:volume
111
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
110-9
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Inheritance of resistance to Xylella fastidiosa within a Vitis rupestris x Vitis arizonica hybrid population.
pubmed:affiliation
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural