Details for: PI 408630, Oryza sativa L., 'IR 20'

Summary Data

Taxonomy:

Oryza sativa L.

Cultivar:

'IR 20'

Origin:

Developed – Calabarzon (Region IV-A), Philippines

Maintained:

National Small Grains Collection

Received by NPGS:

07 Jun 1976

PI Assigned:

1976

Improvement Status:

Cultivar

Form Received:

Seed

Life Form:

Annual

Life Cycle:

Annual

Backup Location:

National Laboratory for Genetic Resources Preservation

Inventory Volume:

184
View original Plant Inventory data in pdf format

Availability

Form	Quantity	Note	Inventory	Cart
Seed	5 gram		PI 408630 OR06PR SD

Images (3 total. Click on image for more.)

Core Passport Data

Taxonomy:

Oryza sativa L.

Cultivar:

'IR 20'

Origin:

Developed – Calabarzon (Region IV-A), Philippines

Maintained:

National Small Grains Collection

Received by NPGS:

07 Jun 1976

PI Assigned:

1976

Improvement Status:

Cultivar

Form Received:

Seed

Life Form:

Annual

Life Cycle:

Annual

Source History

Developed

1969.
Laguna Province, Calabarzon (Region IV-A), Philippines

Developer(s):

International Rice Research Institute

Accession Names and Identifiers

'IR 20'

Type: Cultivar name

International Rice Research Institute

'IR20'

Type: Cultivar name

International Rice Research Institute

Gpno 818

Type: Institute identifier

Group: GPNO

Stuttgart, AR number assigned 1984-1986.

Narrative

Oryza sativa L.

Genus:

Oryza

Section:

Oryza

Subsection:

Oryza

Family:

Poaceae (alt. Gramineae)

Subfamily:

Oryzoideae

Tribe:

Oryzeae

Subtribe:

Oryzinae

Nomen number:

26077

Place of publication:

Sp. pl. 1:333. 1753

Protologue link:

https://biodiversitylibrary.org/page/358352

Comment:

some seed lots of domesticated rice may contain contaminants of a noxious weed hybrid-form that are not distinguishable by seed visualization, which is responsible for the rice-growing state's noxious-weed seed regulations indicated below

Typification:

View in Linnean Typification Project

Verified:

05/11/1992 by ARS Systematic Botanists.

Other conspecific taxa

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

Autonym(s)
Oryza sativa L. f. sativa
Oryza sativa L. subsp. sativa
Oryza sativa L. var. sativa

Heterotypic Synonym(s)


Oryza glutinosa Lour.
Oryza sativa L. var. erythroceros Körn.
Oryza sativa L. var. italica Alef.
Oryza sativa L. var. vulgaris Körn.
Oryza sativa L. var. zeravschanica Brches ex Katzaroff, nom. nud.
Oryza sativa L. subsp. indica Kato
Oryza sativa L. var. affinis Körn.
Oryza sativa L. var. melanacra Körn.
Oryza sativa L. var. flavoacies Kara-Murza ex Zhuk.
Oryza sativa L. var. suberythroceros Kanevsk
Oryza sativa L. subsp. japonica Kato
Oryza sativa L. var. japonica auct.
Oryza communissima Lour.
Oryza formosana Masam. & Suzuki
Oryza montana Lour.

Common names

Language	Name	seq	Citation
English	Asian rice	1	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
English	lowland rice	1	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
English	rice	1	Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
English	upland rice	1	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Arabic	rozz	2	Boulos, L. 1999-. Flora of Egypt
French	riz	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
German	Reis	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
India	chavel	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Italian	riso	2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Japanese Rōmaji	ine	2	Batra, L. R. 1995. Names of Japanese plants sorted by their Japanese names in Romanized Katakana and scientific nomenclature
Portuguese	arroz	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanish	arroz	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedish	ris	2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinese	dao	2	Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).

Annotations

Observations

Phenotype Data

Category	Descriptor	Description	Value	Study	Inventory	Availability
CHEMICAL	Amylose	Percent amylose of milled rice.	33	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
CHEMICAL	Alkali/Spreading Value	Alkali/Spreading value	6.2	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
CHEMICAL	Gelatinization Temperature	Gelatinization temperature	L - LOW	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
DISEASE	Straight Head	Reaction to Straighthead, a physiological disease resulting in malformed panicles.	5 - 30% MALFORMED PANICLES	RICE.STRAIGHTHEAD.STUTTGART.88	PI 408630 OR84AR SD	Not Available
GROWTH	Plant Height 2	Plant height measured in centimeters from the soil surface to the middle of extended panicles. Actual values. See also related descriptor Plant Height 1.	77	RICE.AGRON.STUTTGART.88	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Plant Type - Culm Angle	Culm Angle, rice direct-seeded in rows.	5 - OPEN	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Panicle Type	Panicle type classified according to their mode of branching, angle of primary branches, and spikelet density.	5 - INTERMEDIATE	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Grain Type	Grain Type, classes according to USDA grading standards for brown rice.	2 - MEDIUM-GRAIN (AVG. LENGTH: 5.51 - 6.60 mm) (AVG. LENGTH/WIDTH RATIO: 2.1 - 3.0)	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Hull Color	Hull color (Lemma and Palea) when terminal spikelets are ripened	2 - STRAW	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Hull Cover	Pubescence of lemma or palea	4 - SHORT HAIRS THROUGHOUT	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Sterile Lemma Color	Color of sterile lemma - often called outer glumes or bracts at the base of the spikelet.	1 - STRAW (YELLOW)	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Awn Type	Amount and extent of awns.	1 - SHORT AND PARTLY AWNED	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Lodging	Estimated amount of plant lodging near maturity.	7 - 61 - 70% LODGED	RICE.REJUV.STUTTGART.84.86	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Bran Color	Color of seed coat (bran/pericarp) when fully mature and dry.	2 - LIGHT BROWN	RICE.LAB.ABERDEEN.92	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Length of Kernel	Length of kernel in millimeters for brown (dehulled) rice.	5.8	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Width of Kernel	Width of kernel in millimeters for brown (dehulled) rice.	2.2	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Kernel Length/Width Ratio	Length/Width ratio for brown (dehulled) rice	2.6	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
MORPHOLOGY	Endosperm	Type of endosperm	1 - COMMON (NON-WAXY)	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
PHENOLOGY	Days to Flower	Days from emergence to flowering. Actual values. See also related descriptor Days to Anthesis.	108	RICE.AGRON.STUTTGART.88	PI 408630 OR84AR SD	Not Available
PRODUCTION	Ratooning	Regrowth from stubble	1 - NO GROWTH	RICE.AGRON.STUTTGART.88	PI 408630 OR84AR SD	Not Available
PRODUCTION	Kernel Weight Milled	Kernel weight in milligrams of milled rice	13.3	RICE.QUALITY.BEAUMONT	PI 408630 OR84AR SD	Not Available
STRESS	Salt Tolerance	Germination and seedling growth in a saline solution. (# live seedlings/# GERMINATED) X (# live + # dead seedlings/# germ). [0 = Sensitive, 10 = Tolerant]	0	RICE.SALT.FAYETTEVILLE.90	PI 408630 OR84AR SD	Not Available
STRESS	Allelopathy - Ducksalad	Exhibits allelopathic activity to ducksalad with radius of reduced weed growth greater than 10 centimeters.	N - None	RICE.DUCKSALAD.STUTTGART	PI 408630 OR84AR SD	Not Available