Details for: APG 54908, Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs, RWS 301

Summary Data

Taxonomy:

Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs

Top Name:

RWS 301

Origin:

Collected – Tanzania

Maintained:

Australian Pastures Genebank

Received by APG:

01 Oct 1972

Improvement Status:

Wild material

Form Received:

Seed

Backup Location:

Svalbard Global Seed Vault

Availability

Form	Quantity	Note	Inventory	Cart
Seed	100 count		BASE 54908 2017___2_____ SD

There are no images for this accession.

Core Passport Data

Taxonomy:

Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs

Top Name:

RWS 301

Origin:

Collected – Tanzania

Maintained:

Australian Pastures Genebank

Received by APG:

01 Oct 1972

Improvement Status:

Wild material

Form Received:

Seed

Source History

Collected

12 January 1972.
Locality: 3M. S KEROGWE
Aspect: North; Coll Source: Wild; Landuse: Roadside; Propagule: Seed; Slope: Undulating; Soil Drainage: Moist; Soil_Texture: Clay Loam; Rainfall: 1300

12 January 1972. Tanzania

Collector(s):

Strickland, R W CSIRO Tropical Crops & Pastures

Donated

01 October 1972. Tanzania

Donator(s):

Strickland, R W CSIRO Tropical Crops & Pastures

01 July 2014. Australia

Donator(s):

Commonwealth Scientific and Industrial Research Organisation

08 September 2015. Australia

Donator(s):

Department of Agriculture and Fisheries Queensland

Accession Names and Identifiers

RWS 301

Type: Collector identifier

AusTRCF 59958

Type: Donor identifier

Group: AusTRCF

Austraian Tropical Forage

CPI 59958

Type: Institute identifier

Group: CPI

Commonwealth Plant Introduction

ALP 1.55

Type: Priority Score

Narrative

Group Note

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.

Common names

English
green panic grass –
Guinea grass –
French
herbe de Guinée –
German
Guineagras –
Italian
erba della Guinea –
Portuguese (Brazil)
capim-colonião –
Spanish
mijo de Guinea –
pasto Guinea –
Swedish
guineagräs –

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. pubiglumis (K. Schum.) B. K. Simon & S. W. L. Jacobs (1 active accession[s])

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

Basionym

Panicum maximum Jacq.

Homotypic Synonym(s)

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

Annotations

Observations

Phenotype Data

Category	Descriptor	Description	Value	Study
GROWTH	Growth habit	Dominant growth habit	D - Initially erect, but later cascading growth	APG QLD Regen 2016-17 Panicum Megathyrsus
GROWTH	Mode of spread	Dominant mode of spread (at 1st flower)	S - Strongly stoloniferous	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	Leaf hairs	Leaf surface hairiness, fully expanded leaves (at 1st flower)	1 - Glabrous (none)	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	Leaf sheath hairs	Leaf sheath surface hairiness, fully expanded leaves (at 1st flower)	3 - Sparse hairs	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	Leaf colour (dominant)	Dominant leaf colour 4-6 nodes from branch tip (at 1st flower)	dark green	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	Culm colour (dominant)	Dominant culm colour (10-20 days after 1st flower)	dark green	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	1000 Seed Weight	Weight of 1000 seeds in grams	0.81667	APG QLD Regen 2016-17 Panicum Megathyrsus
MORPHOLOGY	Maximum leaf length	Maximum leaf size of fully expanded leaves (at first flower)	5 - >40 cm	APG QLD Regen 2016-17 Panicum Megathyrsus
OTHER	wet down date	Date seeds were first wetted for germination (in laboratory)	24/10/2016 12:00:00 AM	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Days to First Flower	Days from wetting up to start of flowering phase	58	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Minimum canopy height	Minimum canopy (foliage) height (cm) (without support) (30-50 days after 1st flower)	70	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Maximum canopy height	Maximum canopy (foliage) height (cm) (without support) (30-50 days after 1st flower)	80	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Minimum seedhead height	Minimum flower (foliage) height (cm) (30-50 days after 1st flower)	80	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Maximum seeedhead height	Maximum flower (foliage) height (cm) (30-50 days after 1st flower)	130	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Leafiness rating - principal	Estimate of leaf vs non-leaf material compared to principal (30-50 days after 1st flower)	3 - Greater than comparator	APG QLD Regen 2016-17 Panicum Megathyrsus
PHENOLOGY	Leafiness rating - subsidiary	Estimate of leaf vs non-leaf material compared to subsidiary (30-50 days after 1str flower)	3 - Greater than comparator	APG QLD Regen 2016-17 Panicum Megathyrsus
PRODUCTION	Flowering and seed set	Estimate of seed production capacity	5 - Dense flowering, ready seed set (few empty florets)	APG QLD Regen 2016-17 Panicum Megathyrsus