Inheritance of resistance to Ralstonia pseudosolanacearum in tomato
2018
E13885
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Title
Inheritance of resistance to Ralstonia pseudosolanacearum in tomato
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Publication Date
2018
Call Number
E13885
Summary
Bacterial wilt is a disease causing great losses to the tomato crop. Research investigating inheritance of resistance to this disease helps to improve the efficiency of breeding programs in the development of resistant cultivars. The objective of this study was to determine the inheritance of resistance to Ralstonia pseudosolanacearum in tomato plants. The parents Yoshimatsu and IPA-7; generations F1, F2, BC11, and BC21; and 43 F2:3 progenies were evaluated. The severity of bacterial wilt were assessed through a descriptive scale of scores at 10 and 20 days after inoculation. Inheritance of resistance to R. pseudosolanacearum in tomato involves two major genes with segregation independent of additive effects only, plus polygenes with additive and dominance effects wherein resistance is associated with recessive alleles. Selection of plants resistant to R. pseudosolanacearum is indicated mainly at 20 days after inoculation.
Journal Citation
214:137, EUPHYTICA
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