Details for: PI 352640, Pyrus pyrifolia (Burm. f.) Nakai, 'Kosui'

Summary Data

Taxonomy:

Pyrus pyrifolia (Burm. f.) Nakai

Cultivar:

'Kosui'

Origin:

Developed – Japan

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

24 Mar 1981

PI Assigned:

1970

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Inventory Volume:

178
View original Plant Inventory data in pdf format

Availability

This accession is not available. Contact site for status.

National Clonal Germplasm Repository

There are no images for this accession.

Core Passport Data

Taxonomy:

Pyrus pyrifolia (Burm. f.) Nakai

Cultivar:

'Kosui'

Origin:

Developed – Japan

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

24 Mar 1981

PI Assigned:

1970

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Source History

Developed

1941.
Japan
Comment: Cultivar crossed in 1941, released in 1959
Developer(s):

Kajiura, I., Fruit Research Station

Donated

24 March 1981.
Maryland, United States
Comment: Received from Japan to Glenn Dale, MD to NCGR-Corvallis
Donor(s):

Waterworth, Howard, USDA, ARS

Accession Names and Identifiers

'Kosui'

Type: Cultivar name

ASIAN CULTIVAR

Type: Site identifier

Group: CROPTYPE

CPYR 323

Type: Site identifier

Group: LOCAL

Corvallis local number

Narrative

Kosui (English Translation = Good Water) (PI 352634).--Originated at the National Horticulture Research Station, Tsukuba, Japan. Cross of Kikusui x Wasekozo made in 1941, first fruit in 1947, named and released in 1959. Fruit: medium, mostly russeted, yellow to golden brown; crisp, juicy, very sweet; ripe 2 weeks before Hosui and Chojuro; stores 8 weeks. Tree: medium, vigorous, spreading; resistant to Alternaria black spot, moderate resistance to scab. A high quality, early ripening Japanese pear - Brooks and Olmo Register of Fruit and Nut Varieties

Pyrus pyrifolia (Burm. f.) Nakai

Genus:

Pyrus

Section:

Pashia

Family:

Rosaceae

Subfamily:

Amygdaloideae

Tribe:

Maleae

Subtribe:

Malinae

Nomen number:

30569

Place of publication:

Bot. Mag. (Tokyo) 40:564. 1926

Verified:

07/13/2011 by ARS Systematic Botanists.

Other conspecific taxa

Pyrus pyrifolia (Burm. f.) Nakai var. culta (Makino) Nakai (0 active accession[s])
Pyrus pyrifolia (Burm. f.) Nakai var. pyrifolia (1 active accession[s])

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

Autonym(s)
Pyrus pyrifolia (Burm. f.) Nakai f. pyrifolia

Heterotypic Synonym(s)
Pyrus pyrifolia (Burm. f.) Nakai f. stapfiana (Rehder) Rehder
Pyrus serotina Rehder
Pyrus serotina Rehder var. serotina
Pyrus serotina Rehder var. stapfiana Rehder

Common names

Language	Name	Alternate name	note	seq	Citation
Swedish	sandpäron			2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Korean	dolbaenamu			2	Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:123.

Annotations

Observations

Phenotype Data

Category	Descriptor	Description	Value	Study	Availability
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)	PYRUS.CORVALLIS.1988	Not Available
DISEASE	PSEUDOMONAS	RATING OF DAMAGE CAUSED BY PSEUDOMONAS	7 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)	PYRUS.CORVALLIS.1988	Not Available
MORPHOLOGY	PEDICEL_ATTACHMENT	PEDICEL ATTACHMENT	U - SUNKEN	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	CALYX	CALYX	D - DECIDUOUS	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	CALYX_BASIN	CALYX BASIN	AD - ACUTE DEEP	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	GROUND_COLOR	GROUND COLOR	Y - YELLOW	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	OVER_COLOR	OVERCOLOR	N - NONE	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	RUSSET	AMOUNT OF RUSSETING	5 - (1 = NONE, 9 = COMPLETELY RUSSETED)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	RUSSET_LOCATION	LOCATION OF RUSSETING	E - EVERYWHERE	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	LENTICELS	NUMBER OF LENTICELS	7 - (1 = FEW, 9 = MANY)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	LENTICEL_SIZE	SIZE OF LENTICELS	3 - (1 = SMALL, 9 = LARGE)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	DOTS	DOTS	O - OBSCURE	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	FLESH_COLOR	FLESH COLOR	C - CREAM	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	FLESH_TEXTURE	FLESH TEXTURE	5 - (1 = FINE, 9 = COARSE)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	TEXTURE_TYPE	FLESH TEXTURE TYPE	C - CRISP	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	TEXTURE_TYPE	FLESH TEXTURE TYPE	J - JUICY	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	FRUITCORE	CORE	M - MEDIAN	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	CARPEL_NUMBER	NUMBER OF CARPELS	6	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	GRIT	NUMBER OF STONE CELLS	2 - (1 = NO STONE CELLS, 9 = MANY STONE CELLS)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	GRIT_SIZE	SIZE AND LOCATION OF STONE CELLS	S - SMALL	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	CORE_BREAKDOWN	DEGREE OF CORE BREAKDOWN, DETERMINED ON TREE RIPENED FRUIT	1 - NONE	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	OXIDATION	OXIDATION OF CUT MEASURED AFTER 5 MINUTES	3 - (1 = NONE, 9 = SEVERE)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	FLAVOR	FLAVOR OF FRUIT FLESH	R - AROMATIC	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	FLAVOR	FLAVOR OF FRUIT FLESH	S - SWEET	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	QUALITY	QUALITY OF FRUIT FLESH A COMBINATION OF FLAVOR, TEXTURE AND AROMA	8 - (1 = POOR, 9 = EXCELLENT)	PYRUS.CORVALLIS.STD	Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	1 - LOW	PYRUS.CORVALLIS.1987	Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	9 - HIGH	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	87	PYRUS.CORVALLIS.1986	Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	89	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	89	PYRUS.CORVALLIS.1987	Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	90	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	101	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	191	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	93	PYRUS.CORVALLIS.1987	Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	105	PYRUS.CORVALLIS.1987	Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	116	PYRUS.CORVALLIS.1988	Not Available
PHENOLOGY	FULL_RIPE	JULIAN DATE OF FULL RIPE FRUIT	210	PYRUS.CORVALLIS.1987	Not Available
PRODUCTION	YIELD	YIELD (PRODUCTIVITY)	3 - LOW	PYRUS.CORVALLIS.1987	Not Available