Seeds of South Australia
Rytidosperma racemosum var. racemosum (Gramineae)
Slender Wallaby-grass
List of species for Rytidosperma
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Herbarium regions:
Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Rytidosperma]
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Aug-1598%7 d14 d
1% agar;
Incubated under winter conditions
Aug-1596%7 d7 d 200 mg/L potassium nitrate 48 h;
1% agar;
Incubated under winter conditions
Aug-1596%7 d7 d
1% agar;
Incubated under spring/autumn conditions
Aug-1572%7 d7 d 200 mg/L potassium nitrate 48 h;
1% agar;
Incubated under spring/autumn conditions
Aug-1538%7 dNA 500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under winter conditions
Aug-1534%7 d7 d 500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under spring/autumn conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)