Siamese Acidless

Germplasm Overview
NameSiamese Acidless
AliasN/A
GRIN IDPI 539355
TypeWild Unimproved
SpeciesCitrus maxima
DescriptionN/A
Origin CountryN/A
Origin DetailN/A
PedigreeN/A
Maternal ParentN/A
Paternal ParentN/A
Maternal Parent ofN/A
Paternal Parent ofCitrus-Nou-8/Siamese_Acidless-BC2
Phenotypic Data[view all 21]
SSR Genotype DataN/A
SNP Genotype DataN/A
Map[view all 1]
DNA LibraryN/A
SequenceN/A
Comments"At least two clones of the non-acid (hence sweet) pummelo group are known and there are doubtless others. <BR>"The clone known in the United States was introduced by the U.S. Department of Agriculture in 1930 and was received by the Citrus Research Center, Riverside, California, under the name Siamese Sweet (CES 2240).<BR> "The tree is typical of the Siamese group in all respects - dwarf and drooping, with round-pointed leaves and densely pubescent twigs and new shoot growth. The fruits are oblate to broadly obovoid, with large, crisp, easily separable juice sacs lacking in juice, and insipidly sweet with a trace of bitterness. Siamese Sweet is of horticultural interest primarily as a curiosity and also because it is the seed parent of the recently released Chandler variety (Cameron and Soost, 1961)". (Hodgson, 1967, p 539)<P> This is a parent of <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1434139">Melogold</a> and <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1434138">Oroblanco</a>. It is described in The Citrus Industry, Vol I, pp 539. It is also the seed parent of <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1434325">Chandler</a>. (EM Nauer, ca 1987)<P> Fruit matches the description given in The Citrus Industry pretty well. (EM Nauer, 12/21/1987)<P> Siamese Sweet pummelo is an essentially acidless variety of pummelo.The tree is small in stature with drooping branches. The fruits are oblate with a slightly rough yellow rind. The flavor is insipid. Siamese Sweet pummelo has been used extensively in breeding programs and is the seed parent of Oroblanco and Melogold pummelo-grapefruit hybrids, Chandler pummelo, and Cocktail pummelo-mandarin hybrid. It is mature in the winter and holds well on the tree. (Ottilia "Toots" Bier, ca 2005)<P> This genotype was originally numbered as <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1801129">PI 109690</a>, the record for which is available and contains a link to the original PI book in which the information was recorded. PI 109690 was associated with CPB 10126 (documentation on file at NCGRCD(, hence the link to the earlier PI. (RR Krueger, 12/16/2010)<P> View <a href="http://www.citrusvariety.ucr.edu/citrus/siamesesweet.html">information for this accession from the UC Riverside Citrus Variety Collection</a>.
ReferenceBarkley N, Roose M, Krueger R, Federici C. Assessing genetic diversity and population structure in a citrus germplasm collection utilizing simple sequence repeat markers (SSRs). Theoretical and applied genetics. 2006; 112(8):1519-1531.
Paternal Parent Of
Germplasm Name Description Type
Citrus-Nou-8/Siamese_Acidless-BC2population
Phenotypic Data
Phenotypic Data
Total 21 trait scores
Download Table
# Dataset Descriptor Value
1Citrus.FruitJuiceData.92aroma1
2Citrus.FruitJuiceData.92epicarpadh3
3Citrus.FruitJuiceData.92epicarptex2
4Citrus.FruitJuiceData.92fruitaxmat1
5Citrus.FruitJuiceData.92fruitaxrip1
6Citrus.FruitJuiceData.92fruitcolor3
7Citrus.FruitJuiceData.92fruitlngth14.7
8Citrus.FruitJuiceData.92fruitshape1
9Citrus.FruitJuiceData.92fruitwidth14.4
10Citrus.FruitJuiceData.92juicecolor2
11Citrus.FruitJuiceData.92noseedwp5
12Citrus.FruitJuiceData.92oilglands2
13Citrus.FruitJuiceData.92pulpcolor2
14Citrus.TreeData.89leafform2
15Citrus.TreeData.89leafmargin3
16Citrus.TreeData.89leafshape1
17Citrus.TreeData.89leaftype1
18Citrus.TreeData.89petiolshap3
19Citrus.TreeData.89treehabit2
20Citrus.TreeData.89treeshape3
21Citrus.TreeData.89treevigor2
Page
1
Alias
Synonym
CRC 2240
Publications
YearPublication
2006Barkley N, Roose M, Krueger R, Federici C. Assessing genetic diversity and population structure in a citrus germplasm collection utilizing simple sequence repeat markers (SSRs). Theoretical and applied genetics. 2006; 112(8):1519-1531.