Rain damage to strawberries grown in Southeast Queensland: Evaluation and genetic control

Herrington, Mark E., Hardner, Craig, Wegener, Malcolm, Woolcock, Louella L. and Dieters, Mark J. (2011) Rain damage to strawberries grown in Southeast Queensland: Evaluation and genetic control. HortScience, 46 6: 832-837.

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Author Herrington, Mark E.
Hardner, Craig
Wegener, Malcolm
Woolcock, Louella L.
Dieters, Mark J.
Title Rain damage to strawberries grown in Southeast Queensland: Evaluation and genetic control
Journal name HortScience   Check publisher's open access policy
ISSN 0018-5345
Publication date 2011-06-01
Sub-type Article (original research)
Volume 46
Issue 6
Start page 832
End page 837
Total pages 6
Place of publication Alexandria, VA, United States
Publisher American Society for Horticultural Science
Language eng
Formatted abstract
In Queensland, Australia, strawberries (Fragaria ×ananassa Duchesne) are grown in open fields and rainfall events can damage fruit. Cultivars that are resistant to rain damage may reduce losses and lower risk for the growers. However, little is known about the genetic control of resistance and in a subtropical climate, unpredictable rainfall events hamper evaluation. Rain damage was evaluated on seedling and clonal trials of one breeding population comprising 645 seedling genotypes and 94 clones and on a second clonal population comprising 46 clones from an earlier crossing to make preliminary estimates of heritability. The incidence of field damage from rainfall and damage after laboratory soaking was evaluated to determine if this soaking method could be used to evaluate resistance to rain damage. Narrow-sense heritability of resistance to rain damage calculated for seedlings was low (0.21 ± 0.15) and not significantly different from zero; however, broad-sense heritability estimates were moderate in both seedlings (0.49 ± 0.16) and clones (0.45 ± 0.08) from the first population and similar in clones (0.56 ± 0.21) from the second population. Immersion of fruit in deionized water produced symptoms consistent with rain damage in the field. Lengthening the duration of soaking of ‘Festival’ fruit in deionized water exponentially increased the proportion of damage to fruit ranging in ripeness from immature to ripe during the first 6-h period of soaking. When eight genotypes were evaluated, the proportion of sound fruit after soaking in deionized water in the laboratory for up to 5 h was linearly related (r2 = 0.90) to the proportion of sound fruit in the field after 89 mm of rain. The proportion of sound fruit of the breeding genotype ‘2008-208’ and ‘Festival’ under soaking (0.67, 0.60) and field (0.52, 0.43) evaluations, respectively, is about the same and these genotypes may be useful sources of resistance to rain damage.
Keyword Weather damage
Subtropical
Etch
Cracking
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
 
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Created: Fri, 21 Oct 2011, 19:50:10 EST by Dr Craig Hardner on behalf of Qld Alliance for Agriculture and Food Innovation