Hong Kong wild | Citrus Genome Database

Germplasm Overview


Name	Hong Kong wild
Alias	N/A
GRIN ID	PI 539724
Type	Wild Unimproved
Species	Fortunella hindsii
Description	N/A
Origin Country	N/A
Origin Detail	N/A
Pedigree	N/A
Maternal Parent	N/A
Paternal Parent	N/A
Maternal Parent of	N/A
Paternal Parent of	N/A
Phenotypic Data	[view all 10]
SSR Genotype Data	N/A
SNP Genotype Data	N/A
Map	N/A
DNA Library	N/A
Sequence	N/A
Comments	2 seedlings obtained from Bruce Bartholomew, curator, Berkeley Botanic Garden on January 24, 1978. Seeds collected by B Bartholomew on the west side of Hunchback Mountain in the New Territories of Hong Kong at an elevation of 580 m in November 1975. Seedlings labelled BB 394. (EM Nauer, ca 1987)<P> Budded trees being grown for the variety collection by [RK Soost]. Trees in lathhouse B may be this accession and/or CRC 3789. This accession and CRC 3789 are <u>not</u> the same. See note dated 01/18/1989 on <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1434659">CRC 3789 accession card</a>. (EM Nauer, ca 1989)<P>There are currently two accessions of <i>F hindsii</i> maintained at Riverside, <a href="http://www.ars-grin.gov/cgi-bin/npgs/acc/display.pl?1434659">PI 539723</a> and PI 539724. PI 539723 has traditionally been stated to be 2N and associated with the 'Golden bean' kumquat, whereas PI 539724 has been stated to be 4N and associated with the 'Hong Kong wild' kumquat. The two genotypes are compared in Swingle (1943), pp 349-353, and its revision as Swingle and Reece (1967), pp 333-335. Although Swingle (1943) has more information on these genotypes than does Swingle and Reece (1967), the later is more easily accessible (including an online version) and has most of the pertinent information. See also the information in Hodgson (1967), pp 582-583. It does appear that the received wisdom regarding the ploidy levels is probably incorrect. A letter from <a href="https://npgsweb.ars-grin.gov/gringlobal/cooperator.aspx?id=89620"> the late Prof RK Soost</a> to the donor of PI 539723, Mr William Chapman, dated 07/12/1977 states "I finally have definitive chromosome counts on the <i>F hindsi</i> seedlings...from seed you supplied in 1975...confirming the somatic (diploid) count of 2n = 18. A separate letter from Prof Soost to the donor of PI 539724, Dr Bruce Bartholomew, states: "At long last we got some definitive chromosome counts on the <i>Fortunella hindsii</i> seedlings that I obtained from you in January 1978...The chromosome number of both seedlings is clearly 2n=18." Thus, it appears that both <i>F hindsii</I> accessions are diploid (although this should be confirmed again after over 30 years). In this case, apparently both PI 539723 and PI 539724 would correspond to Swingle's <i>F hindsii</i> var <i>Chintou</i>. In contrast to Swingle's statements in the above sources, Prof Soost states in the letter to Mr Chapman: "I suspect that the basic chromosome number...is 2n = 18, just like all other citrus and related genera...[t]he tetraploid would be the derived type...a tetraploid was either collected by chance of the tetraploid may be established as a cultivar in China. It's hard to believe that the tetraploid would be growing as a wild plant (as described by Swingle), in preference to the diploid." (RR Krueger, 12/21/2010)<P>
Reference	N/A

Cross References

External references for this accession


Database	Accession
GRIN	PI 539724

Phenotypic Data

Total 10 trait scores

Download Table

#	Dataset	Descriptor	Value
1	Citrus.TreeData.89	leafform	2
2	Citrus.TreeData.89	leafmargin	1
3	Citrus.TreeData.89	leafshape	4
4	Citrus.TreeData.89	leaftype	1
5	Citrus.TreeData.89	petiolshap	3
6	Citrus.TreeData.89	shootipcol	1
7	Citrus.TreeData.89	treehabit	2
8	Citrus.TreeData.89	treeshape	2
9	Citrus.TreeData.89	treevigor	2
10	Citrus.TreeData.89	veglifcycl	1

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