Details for: PI 539820, Citrus sp., 'C-32'

Summary Data

Taxonomy:

Citrus sp.

Cultivar:

'C-32'

Origin:

Developed – California, United States

Maintained:

Natl. Germplasm Repository - Riverside

Received by NPGS:

01 Mar 1990

Improvement Status:

Cultivar

Form Received:

Cutting

Life Form:

Tree

Life Habit:

Tree

Backup Location:

National Laboratory for Genetic Resources Preservation

Availability

Form	Quantity	Note	Inventory	Cart
Plant	1 count	Please use comment field to indicate germplasm type being requested and quantity.	PI 539820 PL

There are no images for this accession.

Core Passport Data

Taxonomy:

Citrus sp.

Cultivar:

'C-32'

Origin:

Developed – California, United States

Maintained:

Natl. Germplasm Repository - Riverside

Received by NPGS:

01 Mar 1990

Improvement Status:

Cultivar

Form Received:

Cutting

Life Form:

Tree

Life Habit:

Tree

Source History

Developed

1951.
California, United States
Comment: Date of original pollination. Note: seed parent used in cross no longer maintained, see PI 539551.
Developer(s):

1986.
California, United States
Comment: Released.
Developer(s):

Roose, Mikeal, University of California

Donated

1987.
California, United States
Comment: Incorporated into NCGRCD holdings at establishment.
Donor(s):

University of California Citrus Experiment Station

Accession Names and Identifiers

'C-32'

Type: Cultivar name

Group: CITRANGE

RCRC 3911

Type: Site identifier

VI 287

Type: Quarantine identifier

Citrus Clonal Protection Program

Narrative

According to information received from the developer (ML Roose, 1989), C32 "...is tolerant to tristeza, and reasonably tolerant to Phytophthora and citrus nematode (at least as tolerant as Troyer). We do not know its reaction to exocortis, but recommend that only virus-free scions be used. Based on trials at [University of California, Riverside], Lindcove [Field Station, Tulare County], and a few trees in Pauma Valley, navel and Valencia oranges, Minneola tangelos, and Lisbon lemons budded on C-32 are large vigorous trees with high yields, Compatibility with Eurekas has bnot been tested. Fruit quality is simialr to that of trees on Troyer. Despite these attractive characteristics, two major problems limit use of C-32 citrange. First, it produces few fruit, and most fruit are seedless or nearly so. The average numnber of seed per fruit is often less than one. The second problem is that seedlings are somewhat variable. We have studied this problem in detail using biochemical markers to determine which seedlings are nucellar vs zygotic. In most seedlots we observe about 10 % zygotic seedlings (similar to the frequency in Swingle citrumelo). However, among nucellar seedlings, leaf morphology is much more variable than Troyer or Swingle. Therefore, the percentage of off-type seedlings appears higher than 10 %, and it is difficult to identify true-to-type seedlings. The consequneces of budding trees on off-type seedlings of C-32 are not known, but certainly some of the trees will not perform as expected. The obvious solution to both problems is for an enterprising nurseryman to develop a method for vegetative propagation of C-32, either as srooted cuttings or through tissue culture. The yield advantage seen in trials at Lindcove supports charging a premium for the trees, provided that the large tree size is desired by gowers."

Additional information is available in the release notice (citation below) and from the UC Riveside Citrus Variety Collection. (RR Krueger, 12/31/2012)

Citrus spp.

Genus:

Citrus

Family:

Rutaceae

Subfamily:

Aurantioideae

Tribe:

Aurantieae

Subtribe:

Citrinae

Nomen number:

312282

Comment:

catch-all record for unidentified or unnamed plants of Citrus

Verified:

10/30/1990 by ARS Systematic Botanists.

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

Basionym
Citrus duttae Tanaka

Heterotypic Synonym(s)


Citrus chilensis Molina
Microcitrus spp.
Citrus inflatorugosa hort. ex Tanaka, nom. nud.
Citrus iriomotensis hort. ex Tanaka, nom. nud.
Citrus luteoturgida hort. ex Tanaka, nom. nud.
Citrus yanbaruensis hort. ex Tanaka, nom. nud.
Citrus neoaurantium Tanaka
Citrus sarbati Tanaka
Citrus sphaerocarpa Tanaka, nom. nud.
Citrus oligopulpa hort. ex Tanaka, nom. nud.
Citrus tenuissima hort. ex Tanaka, nom. nud.
Citrus speciosa hort. ex Tanaka, nom. nud.
×Citrofortunella spp.
×Citromicrocitrus spp.
×Citremocitrus spp.
Fortunella spp.
Poncirus spp.
Citrus himekitsu hort. ex Yu. Tanaka
Citrus obversa Hassk.
Citrus ovata Hassk.
Citrus peretta Risso
Citrus pseudoaurantium hort. ex Yu. Tanaka
Citrus suizabon hort. ex Yu. Tanaka
Citrus anonyma hort. ex Yu. Tanaka
Citrus hystrix DC. var. aurarius Lush.
Citrus chrysocarpa Lush.
Citrus acida Roxb. var. pyriformis Lush.
Citrus japonica Thunb. var. hazara Lush.
Citrus japonica Thunb. var. lakkanovensis Lush.
Citrus ×jambhiri Lush. var. chrysocarpa Lush.
Citrus crenatifolia Lush. var. kokni Lush.
Citrus chrysocarpa Lush. var. chrysocarpa
Citrus chrysocarpa Lush. var. decumana Lush.
Citrus chrysocarpa Lush. var. melanocarpa Lush.
Citrus dimorphocarpa Lush. var. decumana Lush.
Citrus limonum Risso var. decumana Lush.
Citrus limonum Risso var. sylvestris Lush.
Citrus limonum Risso var. fulva Lush.
Citrus limonum Risso var. sphaerocarpa Lush.
Citrus limonum Risso var. limonaurantium Lush.
Citrus limonimedica Lush. var. cedratiformis Lush.
Citrus limonimedica Lush. var. pyriformis Lush.
Citrus medicolimonum Lush.
Citrus decumana (L.) L. var. decumana
Citrus decumana (L.) L. var. decumana Lush. subvar. leucocarpa Lush.
Citrus decumana (L.) L. var. pyriformis Lush.
Citrus decumana (L.) L. var. pomiformis Lush.
Citrus decumana (L.) L. var. praegnans Lush.
Citrus decumana (L.) L. var. palestinae Lush.
Citrus heterophyla Raf.
Citrus salicifolia Raf.
Citrus rotundifolia Raf.
Citrus gongra Raf.
Citrus fusiformis Raf.
Citrus obovata Raf.
Citrus ventricosa Michel
Citrus mammosa Michel
Citrus nipis Michel
Citrus ×nobilis Lour. var. microcarpa Hassk.
Citrus ×nobilis Lour. var. melanocarpa Hassk.
Citrus ×nobilis Lour. var. chrysocarpa Hassk.
Eremocitrus spp.
Citrus fusca Lour.

Common names

Language	Name	note	seq	Citation
English	citrus		1	Deng, X. et al. 2020. Chapter 3. Domestication and history. In: Talon, M. et al., The genus Citrus 33-55. DOI: 10.1016/B978-0-12-812163-4.00003-6.
English	orangequat	as Citrofortunella	1	Swingle, W. T. & P. C. Reece. 1943. The botany of Citrus and its wild relatives. Note: as ×Citrofortunella spp.
English	procimequat	as Citrofortunella	1	Swingle, W. T. & P. C. Reece. 1943. The botany of Citrus and its wild relatives. Note: as ×Citrofortunella spp.

Annotations

Nomenclature Name Change: 20 Apr 2020, from ×Citroncirus spp. to Citrus spp.

Observations

Phenotype Data

Category	Descriptor	Description	Value	Sample Size	Study	Availability
GROWTH	Tree habit	General growth habit of tree.	2 - spreading	0	CITRUS.TREEDATA.89	Not Available
GROWTH	Tree shape	General shape of tree.	1 - ellipsoid	0	CITRUS.TREEDATA.89	Not Available
GROWTH	Tree vigor	General vigor of tree.	2 - medium	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Vegetative Life Cycle	Evergreen vs. deciduous .	2 - deciduous	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Shoot tip color	Color of shoot tip.	1 - green	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Leaf type	Leaf type .	2 - trifoliate	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Leaf shape	Shape of leaves.	1 - elliptic	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Leaf form	Ratio of petiole to lamina.	2 - brevipetiolate	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Leaf margin	Type of leaf margin.	1 - crenate	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Petiole wing shape	Shape of petiole wing.	3 - obovate	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Length of fruit	Mean of 10 fruit (cm)	4.8	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Width of fruit	Mean of 10 fruit (cm)	5.2	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit	Shape of fruit	4 - oblate	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit apex	Blossom end	4 - truncate	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit base	Stem end	1 - small neck	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Color of fruit	At maturity	5 - pale orange	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Epicarp surface texture	Epicarp surface texture	4 - pitted	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Adherence of epicarp	Adherence to mesocarp	3 - strong	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Thickness of mesocarp	Measured in mm	2	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Nature of oil glands	Nature of oil glands	2 - conspicuous	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Number of segments per fruit	Number of segments per fruit	8	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Nature of segment membranes	Nature of segment membranes	1 - very fine	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Fruit axis at maturity	Physiological maturity	1 - solid	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Fruit axis at full ripeness	Fruit axis at full ripeness	1 - solid	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Color of pulp	Color of pulp	1 - green	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Texture of pulp	Texture of pulp	2 - medium	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Aroma of juice	Aroma of juice	5 - resinous	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Number of seeds	With pollinizer	2 - less than 3	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Color of juice	Color of juice	1 - greenish	10	CITRUS.FRUITJUICEDATA.92	Not Available