Details for: PI 539488, Citrus ×aurantium L. var. racemosa (Risso) ined., 'IMPERIAL'

Summary Data

Taxonomy:

Citrus ×aurantium L. var. racemosa (Risso) ined.

Cultivar:

'IMPERIAL'

Origin:

Donated – California, United States

Maintained:

Natl. Germplasm Repository - Riverside

Received by NPGS:

01 Jan 1914

Improvement Status:

Cultivar

Form Received:

Cutting

Life Form:

Tree

Life Habit:

Tree

Availability

Form	Quantity	Note	Inventory	Cart
Plant	1 count	Please use comment field to indicate germplasm type being requested and quantity.	PI 539488 CVC PL

Restrictions
Plant material may be subject to additional regulations
https://www.nationalplantboard.org/uploads/1/3/6/7/136771235/louisianas_laws_and_regulations_npb_website_april_2023_tp.pdf

USA – Louisiana (as Citrus paradisi; see state regulation: Citrus Canker Quarantine)

https://www.nationalplantboard.org/uploads/1/3/6/7/136771235/texas_-plant_protection_regulations.pdf

USA – Texas (as Citrus paradisi"; See state regulation: Caribbean Fruit Fly)

There are no images for this accession.

Core Passport Data

Taxonomy:

Citrus ×aurantium L. var. racemosa (Risso) ined.

Cultivar:

'IMPERIAL'

Origin:

Donated – California, United States

Maintained:

Natl. Germplasm Repository - Riverside

Received by NPGS:

01 Jan 1914

Improvement Status:

Cultivar

Form Received:

Cutting

Life Form:

Tree

Life Habit:

Tree

Source History

Donated

01 January 1914.
California, United States
Comment: Citrus and Citrus relative accessions at the Repository in Riverside without PI numbers.
Donor(s):

University of California

Accession Names and Identifiers

'IMPERIAL'

Type: Cultivar name

RCRC 596

Type: Donor identifier

DPI 150

Type: Quarantine identifier

Registered commercial nurseries in Florida desiring budwood of this variety should contact DPI.

Florida DOACS - DPI -Citrus Germplasm Introduction Program

Narrative

Exocortis removed by shoot tip grafting 1985. Very similar (maybe identical) to CRC 297 and 248. Somewhat different from common seedy white grapefruit in having darker yellow, thicker rind, flesh darker yellow and coarser, flavor sweeter, lacking typical grapefruit flavor and bitterness; more grapefruit-like than orange-like.

Citrus ×aurantium L. var. racemosa (Risso) ined.

Genus:

Citrus

Family:

Rutaceae

Subfamily:

Aurantioideae

Tribe:

Aurantieae

Subtribe:

Citrinae

Nomen number:

488416

Comment:

epithet with priority at variety rank for taxon, combination not yet made

Verified:

Name not verified.

Other conspecific taxa

Citrus ×aurantium L. (134 active accession[s])
Citrus ×aurantium L. var. aurantium (5 active accession[s])
Citrus ×aurantium L. var. chrysocarpa (Hassk.) ined. (88 active accession[s])
Citrus ×aurantium L. var. sinensis L. (324 active accession[s])

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

Homotypic Synonym(s)
Citrus pompelmos Risso var. racemosus Risso

Heterotypic Synonym(s)


Citrus medioglobosa hort. ex Tanaka
Citrus miaray Wester
Citrus natsudaidai Hayata
Citrus ×paradisi Macfad.
Citrus ×pseudoparadisi hort. ex Yu. Tanaka
Citrus ×rugulosa hort. ex Tanaka
Citrus ×sulcata hort. ex I. Takah.
Citrus ×glaberrima hort. ex Tanaka
Citrus hiroshimana hort. ex Yu. Tanaka
Citrus kotokan Hayata
Citrus hassaku hort. ex Tanaka
Citrus ×iwaikan hort. ex Yu. Tanaka
Citrus otachibana hort. ex Yu. Tanaka
Citrus ×obovoidea hort. ex I. Takah.
Citrus ujukitsu Tanaka
Citrus mitsuharu hort. ex Yu. Tanaka
Citrus omikanto hort. ex Yu. Tanaka
Citrus yuge-hyokan hort. ex Yu. Tanaka
Citrus tosa-asahi hort. ex Yu. Tanaka
Citrus pomelana Van Deman

Common names

Language	Name	note	seq	Citation
English	grapefruit		1	Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL. Note: as Citrus ×paradisi
English	hassaku orange	as Citrus hassaku	1	Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:120. Note: lists as "hassaka" as Citrus hassaku
English	Japanese summer grapefruit		1	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 Note: as Citrus natsudaidai
English	kinkoji	as Citrus obovoidea	1	Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:121. Note: as Citrus ×obovoidea
English	Naruto orange	as Citrus medioglobosa	1	Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:121. Note: as Citrus medioglobosa
French	pomelo		2	Hackett, C. & J. Carolane. 1982. Edible Horticultural Crops Academic Press. Note: as Citrus ×paradisi
German	Grapefruit		2	Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Citrus ×paradisi
German	Paradisapfel		2	Reichel, S. 1998. pers. comm. Note: re. German common names as Citrus ×paradisi
Japanese Rōmaji	kikudaidai	as Citrus medioglobosa	2	Bhusal, R. C. et al. 2002. Selection of rootstocks for flooding and drought tolerance in citrus species. Pakistan J. Biol. Sci. 5:509-512. Note: as Citrus medioglobosa
Japanese Rōmaji	kinukawa	as Citrus glaberrima	2	Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:119. Note: as Citrus ×glaberrima
Japanese Rōmaji	Naruto-mikan	as Citrus medioglobosa	2	Bhusal, R. C. et al. 2002. Selection of rootstocks for flooding and drought tolerance in citrus species. Pakistan J. Biol. Sci. 5:509-512. Note: as Citrus medioglobosa
Japanese Rōmaji	natsu-daidai		2	Walker, E. 1976. Flora of Okinawa and the southern Ryukyu Islands. Note: as Citrus natsudaidai
Japanese Rōmaji	natsu-mikan		2	Iwatsuki, K. et al. 1993-. Flora of Japan. Note: as Citrus natsudaidai
Japanese Rōmaji	sanbokan	as	2	Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:122. Note: as Citrus ×sulcata
Portuguese	pomelo		2	Hackett, C. & J. Carolane. 1982. Edible Horticultural Crops Academic Press. Note: as Citrus ×paradisi
Spanish	pomelo		2	Hackett, C. & J. Carolane. 1982. Edible Horticultural Crops Academic Press. Note: as Citrus ×paradisi
Spanish	pomelo japonés de verano		2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 Note: as Citrus natsudaidai
Spanish	toronja		2	Soukup, J. 1970. Vocabulario de los nombres vulgares de la flora peruana. 84. Note: as Citrus ×paradisi
Transcribed Chinese	yuan you		2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6 Note: as Citrus ×paradisi
unknown	attani	as Citrus rugulosa	2	Singh, R. & N. Nath. 1969. Practical approach to the classification of Citrus. In: H. D. Chapman (ed.), Proceedings of the First International Citrus Symposium. 1:439. Note: as Citrus ×rugulosa

Annotations

Nomenclature Name Change: 06 Mar 2020, from Citrus ×paradisi Macfad. to Citrus ×aurantium L. var. racemosa (Risso) ined.

Observations

Phenotype Data

Category	Descriptor	Description	Value	Sample Size	Study	Availability
GROWTH	Tree habit	General growth habit of tree.	1 - upright	0	CITRUS.TREEDATA.89	Not Available
GROWTH	Tree shape	General shape of tree.	2 - spheroid	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 .	1 - evergreen	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 .	1 - simple	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Leaf shape	Shape of leaves.	3 - obovate	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.	2 - deltoid	0	CITRUS.TREEDATA.89	Not Available
MORPHOLOGY	Length of fruit	Mean of 10 fruit (cm)	8.4	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Width of fruit	Mean of 10 fruit (cm)	8.8	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit	Shape of fruit	1 - spheroid	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit apex	Blossom end	3 - convex	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Shape of fruit base	Stem end	4 - truncate	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Color of fruit	At maturity	4 - deep yellow	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Epicarp surface texture	Epicarp surface texture	2 - rugose	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Adherence of epicarp	Adherence to mesocarp	2 - moderate	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Thickness of mesocarp	Measured in mm	7	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Nature of oil glands	Nature of oil glands	3 - very conspicuous	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Number of segments per fruit	Number of segments per fruit	12	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Nature of segment membranes	Nature of segment membranes	2 - 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	2 - yellow	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	1 - weak	10	CITRUS.FRUITJUICEDATA.92	Not Available
MORPHOLOGY	Number of seeds	With pollinizer	4 - 11 to 20	10	CITRUS.FRUITJUICEDATA.92	Not Available