Association between alleles of the Waxy gene and traits of grain quality in philippine seed board rice varieties

Leslie T. Roferos; Vito M. Butardo; Melissa A. Fitzgerald; Bienvenido O. Juliano

Association between alleles of the Waxy gene and traits of grain quality in philippine seed board rice varieties

Leslie T. Roferos, Vito M. Butardo, Melissa A. Fitzgerald, Bienvenido O. Juliano

Research output: Contribution to journal › Article › peer-review

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)₁₇and (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.

Original language	English
Pages (from-to)	334-337
Number of pages	4
Journal	Philippine Agricultural Scientist
Volume	91
Issue number	3
Publication status	Published - Sept 2008

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title = "Association between alleles of the Waxy gene and traits of grain quality in philippine seed board rice varieties",

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)17and (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.",

keywords = "Apparent amylose content, Cluster, Cooked rice hardness, CT polymorphism, Gelatinization temperature, PSB Rc varieties, RVA, Waxy gene",

author = "Roferos, {Leslie T.} and Butardo, {Vito M.} and Fitzgerald, {Melissa A.} and Juliano, {Bienvenido O.}",

year = "2008",

month = sep,

language = "English",

volume = "91",

pages = "334--337",

journal = "Philippine Agricultural Scientist",

issn = "0031-7454",

publisher = "University of the Philippines Los Banos",

number = "3",

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TY - JOUR

T1 - Association between alleles of the Waxy gene and traits of grain quality in philippine seed board rice varieties

AU - Roferos, Leslie T.

AU - Butardo, Vito M.

AU - Fitzgerald, Melissa A.

AU - Juliano, Bienvenido O.

PY - 2008/9

Y1 - 2008/9

N2 - 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)17and (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.

AB - 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)17and (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.

KW - Apparent amylose content

KW - Cluster

KW - Cooked rice hardness

KW - CT polymorphism

KW - Gelatinization temperature

KW - PSB Rc varieties

KW - RVA

KW - Waxy gene

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M3 - Article

AN - SCOPUS:64549156079

SN - 0031-7454

VL - 91

SP - 334

EP - 337

JO - Philippine Agricultural Scientist

JF - Philippine Agricultural Scientist

IS - 3

ER -

Association between alleles of the Waxy gene and traits of grain quality in philippine seed board rice varieties

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