Skip to main content
Skip to site map
United States Department of Agriculture
Agricultural Research Service
0
Cart
Welcome!
***THIS IS A TESTING SITE ONLY.***
Please do not place germplasm orders on this site.
GRIN-Global
Menu
USDA National Plant Germplasm System
Version:
2.3.12 [npgstest -- bhunt2312-0204]
Menu
Accessions
Descriptors
Reports
GRIN Taxonomy
Search Taxonomy
Crop Wild Relative Data
Nodulation Data
Regulations
World Economic Plants
About GRIN Taxonomy
GRIN
USDA Genetic Resource Collections
About GRIN-Global
Use of Cookies
NPGS Distribution Policy
Software Disclaimer
GRIN-U
Help
Contact Us
Your Profile
Your Profile
Your Web Request History
Your Address Book
Your Wish List
Details for: PI 550446,
Zea mays
L. subsp.
mays
, Iowa Two-Ear Synthetic No. 1
Summary
Passport
Taxonomy
Other
Pedigree
IPR
Observation
Summary Data
Taxonomy:
Zea mays
L. subsp.
mays
Top Name:
Iowa Two-Ear Synthetic No. 1
Origin:
Developed – Iowa, United States
Maintained:
North Central Regional Plant Introduction Station
Received by NPGS:
Sep 1971
Improvement Status:
Breeding material
Reproductive Uniformity:
Population
Form Received:
Seed
Life Form:
Annual
Life Cycle:
Annual
Backup Location:
National Laboratory for Genetic Resources Preservation
Availability
Form
Quantity
Note
Inventory
Cart
Seed
100 count
PI 550446 02ncai01 SD
Images
(2
total. Click on image for more.)
Core Passport Data
Taxonomy:
Zea mays
L. subsp.
mays
Top Name:
Iowa Two-Ear Synthetic No. 1
Origin:
Developed – Iowa, United States
Maintained:
North Central Regional Plant Introduction Station
Received by NPGS:
Sep 1971
Improvement Status:
Breeding material
Reproductive Uniformity:
Population
Form Received:
Seed
Life Form:
Annual
Life Cycle:
Annual
Source History
Developed
1967.
Iowa, United States
Developer(s):
Dicke, Fred
Eberhart, Steve A., USDA ARS National Laboratory for Genetic Resources Preservation
Guthrie, W.D., USDA, ARS
Hallauer, Arnel R., Iowa State University
Penny, L.H.
Russell, W. A., Iowa State University
Scott, Gene E., USDA, ARS
Donated
September 1971.
Iowa, United States
Donor(s):
Iowa Agricultural Experiment Station
Accession Names and Identifiers
Iowa Two-Ear Synthetic No. 1
Type: Developer identifier
REG NO GP-12
Type: Other or unclassified name
NSSL
Narrative
All lines in synthetic have 2 ears per plant and good combining ability.
Zea mays
L. subspp.
mays
Genus:
Zea
Family:
Poaceae
(alt. Gramineae)
Subfamily:
Panicoideae
Tribe:
Andropogoneae
Subtribe:
Tripsacinae
Nomen number:
311987
Verified:
07/15/1987
by ARS Systematic Botanists.
Other conspecific taxa
Zea mays
L.
(1531 active accession[s])
Zea mays
L. subsp.
huehuetenangensis
(H. H. Iltis & Doebley) Doebley
(6 active accession[s])
Zea mays
L. subsp.
mexicana
(Schrad.) H. H. Iltis
(128 active accession[s])
Zea mays
L. subsp.
parviglumis
H. H. Iltis & Doebley
(250 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Autonym(s)
Zea mays
L. var.
mays
Heterotypic Synonym(s)
Zea curagua
Molina
Zea mays
L. var.
indentata
(Sturtev.) L. H. Bailey
Zea mays
L. var.
indurata
(Sturtev.) L. H. Bailey
Zea mays
L. var.
japonica
(Van Houtte) Alph. Wood
Zea mays
L. var.
saccharata
(Sturtev.) L. H. Bailey
Zea mays
L. var.
tunicata
Larrañaga ex A. St.-Hil.
Zea japonica
Van Houtte
Zea indurata
Sturtev.
Zea indentata
Sturtev.
Zea saccharata
Sturtev.
Zea mays
L. var.
leucodon
Alef.
Zea mays
L. var.
vulgata
Körn.
Zea mays
L. var.
flavorubra
Körn.
Zea mays
L. var.
alba
Alef.
Zea mays
L. Ceratina Group Kuleshov
Zea mays
L. subsp.
amylacea
(Sturtev.) Zhuk.
Zea amylacea
Sturtev.
Zea everta
Sturtev.
Zea mays
L. subsp.
everta
(Sturtev.) Zhuk.
Common names
Language
Name
Alternate name
note
seq
Citation
English
corn
1
Rehm, S.
1994. Multilingual dictionary of agronomic plants
English
dent corn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
English
field corn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
English
flint corn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
English
maize
1
Wiersema, J. H. & B. León.
1999.
World economic plants: a standard reference
CRC Press, Boca Raton, FL.
English
pod corn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
English
popcorn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
English
sweet corn
1
Terrell, E. E. et al.
1986. Agricultural Handbook no. 505
Arabic
dura shami
2
Boulos, L.
1999-. Flora of Egypt
Chinese
yu shu shu
玉蜀黍
2
Wu Zheng-yi & P. H. Raven et al., eds.
1994-.
Flora of China (English edition).
French
maïs
2
Demilly, D. et al.
1996. Liste alphabétique des principales espèces de plantes cultivées et de mauvaises herbes. Noms latins et noms français, ed. 6.
Note:
GEVES-SNES, Beaucouzé, France
German
Mais
2
Rehm, S.
1994. Multilingual dictionary of agronomic plants
Italian
granoturco
2
International Seed Testing Association.
1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Italian
mais
2
International Seed Testing Association.
1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Japanese Rōmaji
tō-morokoshi
2
Batra, L. R.
1995. Names of Japanese plants sorted by their Japanese names in Romanized Katakana and scientific nomenclature
Portuguese
milho
2
Rehm, S.
1994. Multilingual dictionary of agronomic plants
Spanish
maíz
2
Rehm, S.
1994. Multilingual dictionary of agronomic plants
Swedish
majs
2
Aldén, B., S. Ryman, & M. Hjertson.
2012.
Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Korean
gangnaengi
2
Mun-Chan, B. et al.
1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:134.
Transcribed Korean
ogsusu
2
Lee, Y. N.
1997. Flora of Korea.
Name
References
Annotations
Other Links
Storage Information Form
Actions
Pathogens
Vouchers
Citations
Pedigree
Date released:
1967
Description:
Combined 10 lines (R71, ITE701, HD2158, HD2244, HD2418, B58, B60, (N32/2*B14)-1-30-4, (Oh43/B33)-139, Krug-792). HD2158 and HD2244 from Iowa Stiff Stalk Synthetic. HD2418 from Iowa Stiff Stalk Synthetic/W22.
Intellectual Property Rights
Crop Science Registration
. GP-12, MAIZE. Issued: 01 Jan 1971.
Russell, W. A., L. H. Penny, A. R. Hallauer, S. A. Eberhart, G. E. Scott, W. D. Guthrie, & F. F. Dicke.
1971. Registration of Maize Germplasm Synthetics. Crop Sci. (Madison) 11(1):140-141.
Note:
GP-12
Material Transfer Agreement
Observations
Phenotype Data
Category
Descriptor
Description
Value
Sample Size
Study
Inventory
Availability
DISEASE
Northern Leaf Blight
Leaf response to northern leaf blight organism (Exserhilum turcicum [Pass.] Leonard & Suggs - previous name was Helminthosporium turcicum.
7 - 7 on a scale 0 = No symptoms observed, 9 = Severe disease development
19
MAIZE.NLB.PIONEER.JOHNSTON.2009
PI 550446 02ncai01 SD
DISEASE
Stewarts Wilt
Plant response to the Stewart's wilt organism (Pantoea stewartii subsp. stewartii (Smith) Mergaert, Verdonck & Kersters) formerly called (Erwinia stewartii (Smith) Dye ). The trait is coded 1-9 with 1 representing the most resistant response and 9 the most susceptible response.
4 - (4) Abundant spread bi-directionally in inoculated leaves only.
32
MAIZE.STEWARTS.NCRPIS.2005
PI 550446 02ncai01 SD
GROWTH
Plant Height
Height of the plant from ground level to the top of the tassel at full growth measured in centimeters (cm).
260.00000
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Tassel Type
Classification of the amount of tassel branching from no branching to beyond tertiary tassel branching.
2 - Branching to secondary tassel branches only. No tertiary tassel branches. (100%)
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Peduncle Height
Distance from ground level to the node where the tassel emerges on the central stalk.
196
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Bottom Tassel Branch Height
Distance from ground level to the insertion point on the tassel stem of the bottom tassel branch of the central stalk.
219
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Top Tassel Branch Height
Distance from ground level to the insertion point on the tassel stem of the upper most tassel branch of the central stalk.
233
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Node Number Above the Ear
Number of Nodes on the main stalk starting at the node above the ear node up to and including the peduncle node.
5
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Kernel Type
KERNEL TYPE
D - SEMIDENT (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Kernel Color
KERNEL COLOR
B - YELLOW (90%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Kernel Color
KERNEL COLOR
M - YELLOW CAP (10%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Kernel Row Arrangement
ARRANGEMENT OF KERNEL ROWS FROM THE BASE TO THE TIP OF THE EAR.
1 - REGULAR (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Kernel row Number
NUMBER OF KERNEL ROWS COUNTED ON THE CENTRAL PART OF THE UPPERMOST EAR ON THE PLANT.
0
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Ear Length
LENGTH OF THE EAR IN CENTIMETERS.
20.5
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Ear Diameter
DIAMETER OF THE EAR IN CENTIMETERS MEASURED AT THE CENTRAL PART OF THE UPPERMOST EAR ON THE PLANT.
4.5
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Ear Height
HEIGHT OF THE TOP EAR ON THE CENTRAL STALK FROM GROUND LEVEL TO THE NODE WHERE THE EAR ATTACHES TO THE STALK.
113
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Cob Color
COLOR OF THE COB
2 - RED (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Upper Kernel Shape
SHAPE OF THE UPPER SURFACE OF THE KERNEL.
2 - INDENTED (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Ear Number
NUMBER OF EARS WITH KERNELS ON THE MAIN STEM
2
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Node Number
Number of Nodes on the main stalk from ground level up to and including the peduncle node.
13
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Tiller Number
NUMBER OF TILLERS PER PLANT
0
10
MAIZE.INC.AMES.2002.LATE
PI 550446 99ncfo01 SD
Not Available
MORPHOLOGY
Endosperm Color
COLOR OF THE HARD ENDOSPERM LAYER
4 - YELLOW (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Ear Shape
SHAPE OF THE UPPERMOST EAR
2 - CYLINDRICAL - CONICAL (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Aleurone Color
The color and pattern of the kernel aleurone layer. The first entry represents the color and the second number represents the pattern of that color.
11 - COLORLESS / UNIFORM (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Pericarp Color
THE COLOR AND THE PATTERN OF THE PERICARP. THE FIRST NUMBER IS THE COLOR, THE SECOND NUMBER IS THE PATTERN.
11 - COLORLESS / UNIFORM (90%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Pericarp Color
THE COLOR AND THE PATTERN OF THE PERICARP. THE FIRST NUMBER IS THE COLOR, THE SECOND NUMBER IS THE PATTERN.
63 - ORANGE / HALO (10%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Glume Development
Glume development
1 - None (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
MORPHOLOGY
Colored Silk Scar
Colored Silk Scar
N - Colored silk scar is not present (100%)
167
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD
PRODUCTION
1000 Kernel Weight
The weight of 1000 kernels measured in grams, preferably with the weight adjusted to 10% moisture content.
343
MAIZE.INC.AMES.2002.LATE
PI 550446 02ncai01 SD