Details for: PI 508620, Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs, 593-79


Summary Data
Taxonomy:
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs
Top Name:
593-79
Origin:
Collected – Argentina
Received by NPGS:
Oct 1986
PI Assigned:
1987
Improvement Status:
Wild material
Form Received:
Seed
Availability
FormQuantityNoteInventoryCart
Seed200 countPI 508620 01 SD
 
There are no images for this accession.

Core Passport Data
Taxonomy:
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs
Top Name:
593-79
Origin:
Collected – Argentina
Received by NPGS:
Oct 1986
PI Assigned:
1987
Improvement Status:
Wild material
Form Received:
Seed
Source History
Collected
20 February 1979.
Argentina
Locality: Route 9, 13 km N of Tucuman
Comment: Received through 1979 USDA-ARS sponsored plant exploration to South America.
Collector(s):
Accession Names and Identifiers
593-79
Type: Donor identifier

BB 0179
Type: Exploration identifier
Group: PEO-EXPLORATIONS
Exploration ID links

Narrative
Plants tall, robust, leafy. Leaves broad, 1.5m long. Inflorescences 1.8 to 2.1m high.
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs
Genus:
Megathyrsus
Family:
Poaceae (alt. Gramineae)
Subfamily:
Panicoideae
Tribe:
Paniceae
Subtribe:
Melinidinae
Nomen number:

447623
Place of publication:

Austrobaileya 6:572. 2003
Verified:
01/05/2005 by ARS Systematic Botanists.
Other conspecific taxa
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs var. coloratus (C. T. White) B. K. Simon & S. W. L. Jacobs (0 active accession[s])
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs var. maximus (0 active accession[s])
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs var. pubiglumis (K. Schum.) B. K. Simon & S. W. L. Jacobs (0 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Basionym
Panicum maximum Jacq.

Homotypic Synonym(s)
Panicum maximum Jacq. var. maximum
Urochloa maxima (Jacq.) R. D. Webster

Heterotypic Synonym(s)
Panicum hirsutissimum Steud.
Panicum maximum Jacq. var. hirsutissimum (Steud.) Oliv.
Panicum maximum Jacq. var. trichoglume Robyns

Common names
LanguageNameAlternate namenoteseqCitation
Englishgreen panic grass as Panicum maximum1't Mannetje, L. & R. M. Jones, eds. 1992. Forages. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA) 4:172. Note: as Panicum maximum
EnglishGuinea grass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Frenchherbe de Guinée as Panicum maximum2Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Panicum maximum
GermanGuineagras as Panicum maximum2Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Panicum maximum
Italianerba della Guinea  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Portuguese (Brazil)capim-colonião as Panicum maximum2Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Panicum maximum
Spanishmijo de Guinea as Panicum maximum2Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Panicum maximum
Spanishpasto Guinea as Panicum maximum2Rehm, S. 1994. Multilingual dictionary of agronomic plants Note: as Panicum maximum
Swedishguineagräs  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Annotations
  • Nomenclature Name Change: 05 Jan 2005, from Panicum maximum Jacq. to Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs
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Observations

Phenotype Data

CategoryDescriptorDescriptionValueSample SizeStudyInventoryAvailability
GROWTHFoliage HeightFoliage height in decimeters12 S9.GRASSESPI 508620 01 SD
GROWTHPlant HeightTotal plant height in decimeters16 S9.GRASSESPI 508620 01 SD
GROWTHPlant WidthPlant spread in decimeters20 S9.GRASSESPI 508620 01 SD
MORPHOLOGYFoliage DistributionDistribution of leaves on plant3 - Well distributed S9.GRASSESPI 508620 01 SD
MORPHOLOGYLeaf LengthLeaf length measured in centimeters40 S9.GRASSESPI 508620 01 SD
MORPHOLOGYLeaf WidthLeaf width measured in millimeters18 S9.GRASSESPI 508620 01 SD
MORPHOLOGYStem SizeStem size by code9 - Large S9.GRASSESPI 508620 01 SD
MORPHOLOGYTillersAbundance of tillers produced1 - Abundant S9.GRASSESPI 508620 01 SD
PHENOLOGYMaturityDays from March 15 planting to first flower121 S9.GRASSESPI 508620 01 SD
PRODUCTIONFoliage AmountAbundance of foliage produced1 - Abundant S9.GRASSESPI 508620 01 SD
PRODUCTIONSeed ProductionRelative seed production1 - Abundant S9.GRASSESPI 508620 01 SD
STRESSWinter SurvivalResistance to winter damage4 - (1 = Little or no damage, 9 = Complete winter kill) S9.GRASSESPI 508620 01 SD