Association between alleles of the waxy gene and traits of grain quality in Philippine Seed Board rice varieties

Roferos, Leslie T., Butardo, Vito Jr. M., Fitzgerald, Melissa A and Juliano, Bienvinido O. (2008) Association between alleles of the waxy gene and traits of grain quality in Philippine Seed Board rice varieties. Philippine Agricultural Scientist, 91 3: 334-337.

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Author Roferos, Leslie T.
Butardo, Vito Jr. M.
Fitzgerald, Melissa A
Juliano, Bienvinido O.
Title Association between alleles of the waxy gene and traits of grain quality in Philippine Seed Board rice varieties
Formatted title
Association between alleles of the waxy gene and traits of grain quality in Philippine Seed Board rice varieties
Journal name Philippine Agricultural Scientist   Check publisher's open access policy
ISSN 0031-7454
Publication date 2008-09
Year available 2008
Sub-type Editorial
Open Access Status File (Author Post-print)
Volume 91
Issue 3
Start page 334
End page 337
Total pages 4
Editor Teczon-Mendoza
Evelyn Mae
Place of publication Los Banos, The Philippines
Publisher College of Agriculture, University of the Philippines Los Banos
Collection year 2009
Language eng
Subject 0701 Agriculture, Land and Farm Management
Formatted abstract
The association between alleles of the Waxy gene, defined by the number of CT repeats on exon 1, and traits of grain quality was carried out using 47 Philippine Seed Board rice varieties. The major alleles of the Waxy gene in the set of 47 were (CT)10, (CT)11, (CT)17 and (CT)20. Varieties were divided into four clusters based on the metric of each trait of grain quality. (CT)10 (27-32% amylose content (AC)) and (CT)11 (22-30% AC) were mainly in clusters 3 and 4 (hard texture), and (CT)17 (20-24% AC) and (CT)20 (18- 27% AC) were exclusively in grain quality cluster 1 (soft texture) and 2 (medium texture). (CT)n associated negatively with AC in this set. Only six (CT)11 and one (CT)10 rices were in cluster 4 (high-AC low-GT) and had high RVA consistency (final viscosity - trough viscosity) > 200 RVU. (CT)17 seemed to be the preferred source of low-intermediate AC in the Philippine rice breeding program, followed by (CT)20.
Keyword Apparent amylose content
Cooked rice hardness
CT polymorphism
Gelatinisation temperature
PSB Rc varieties
Waxy gene
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Document type: Journal Article
Sub-type: Editorial
Collections: School of Agriculture and Food Sciences
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Created: Fri, 20 Mar 2009, 13:35:22 EST by Mr Vito Butardo on behalf of Faculty Of Nat Resources, Agric & Veterinary Sc