Details for: PI 431304, Oryza sativa L., 'IR 20'


Summary Data
Taxonomy:
Oryza sativa L.
Cultivar:
'IR 20'
Origin:
Developed – Calabarzon (Region IV-A), Philippines
Received by NPGS:
29 Dec 1978
PI Assigned:
1978
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Annual
Life Cycle:
Annual
Availability
FormQuantityNoteInventoryCart
Seed5 gramPI 431304 OR16AR SD
 
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Core Passport Data
Taxonomy:
Oryza sativa L.
Cultivar:
'IR 20'
Origin:
Developed – Calabarzon (Region IV-A), Philippines
Received by NPGS:
29 Dec 1978
PI Assigned:
1978
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):
Donated
29 December 1978.


Donor(s):
Accession Names and Identifiers
'IR 20'
Type: Cultivar name
International Rice Research Institute

'IR20'
Type: Cultivar name
International Rice Research Institute

P 1251
Type: Collector identifier

F 33
Type: Quarantine identifier

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
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
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)
Common names
LanguageNameAlternate namenoteseqCitation
EnglishAsian rice  1Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Englishlowland rice  1Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Englishrice  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Englishupland rice  1Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Arabicrozz  2Boulos, L. 1999-. Flora of Egypt
Frenchriz  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
GermanReis  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Indiachavel  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Italianriso  2Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Japanese Rōmajiine  2Batra, L. R. 1995. Names of Japanese plants sorted by their Japanese names in Romanized Katakana and scientific nomenclature
Portuguesearroz  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanisharroz  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedishris  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinesedao  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
Annotations
Other Links
Actions
Pathogens
Vouchers
Citations
Pedigree
Date released:
1969
Description:
IR 262-24-3/TKM 6

Observations

Phenotype Data

CategoryDescriptorDescriptionValueSample SizeStudyInventoryAvailability
GROWTHPlant Height 2Plant height measured in centimeters from the soil surface to the middle of extended panicles. Actual values. See also related descriptor Plant Height 1.190 RICE.AGRON.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYPanicle TypePanicle type classified according to their mode of branching, angle of primary branches, and spikelet density.9 - OPEN RICE.AGRON.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYGrain TypeGrain 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.LAB.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYHull ColorHull color (Lemma and Palea) when terminal spikelets are ripened3 - GOLD, LIGHT OR DEEP RICE.LAB.ABERDEEN.03PI 431304 OR SDNot Available
MORPHOLOGYHull CoverPubescence of lemma or palea4 - SHORT HAIRS THROUGHOUT RICE.LAB.ABERDEEN.03PI 431304 OR SDNot Available
MORPHOLOGYSterile Lemma ColorColor of sterile lemma - often called outer glumes or bracts at the base of the spikelet.1 - STRAW (YELLOW) RICE.LAB.ABERDEEN.03PI 431304 OR SDNot Available
MORPHOLOGYAwn TypeAmount and extent of awns.0 - ABSENT RICE.AGRON.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYLodgingEstimated amount of plant lodging near maturity.9 - 81 - 100% LODGED RICE.AGRON.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYBran ColorColor of seed coat (bran/pericarp) when fully mature and dry.5 - RED RICE.LAB.ABERDEEN.92PI 431304 OR SDNot Available
MORPHOLOGYLength of KernelLength of kernel in millimeters for brown (dehulled) rice.6.1 RICE.LAB.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYWidth of KernelWidth of kernel in millimeters for brown (dehulled) rice.2.7 RICE.LAB.STUTTGART.16PI 431304 OR SDNot Available
MORPHOLOGYKernel Length/Width RatioLength/Width ratio for brown (dehulled) rice2.3 RICE.LAB.STUTTGART.16PI 431304 OR SDNot Available
PHENOLOGYDays to FlowerDays from emergence to flowering. Actual values. See also related descriptor Days to Anthesis.122 RICE.AGRON.STUTTGART.16PI 431304 OR SDNot Available
PRODUCTION1000 Kernel Weight-RoughThousand kernel weight of rough rice, based on a count of 100 or more. Expressed in grams.25.2 RICE.LAB.STUTTGART.16PI 431304 OR SDNot Available
STRESSSalt ToleranceGermination and seedling growth in a saline solution. (# live seedlings/# GERMINATED) X (# live + # dead seedlings/# germ). [0 = Sensitive, 10 = Tolerant]0.31 RICE.SALT.FAYETTEVILLE.90PI 431304 OR SDNot Available
STRESSAllelopathy - DucksaladExhibits allelopathic activity to ducksalad with radius of reduced weed growth greater than 10 centimeters.N - None RICE.DUCKSALAD.STUTTGARTPI 431304 OR SDNot Available