56. Volume 12- Number 2 - IP Australia

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PLANT VARIETIES JOURNAL 1999 VOL 12 NO. 2 Table 8 Brachyscome varieties ‘Sunabell’ *‘Misty *‘Valencia’ *‘Bright Mauve’ A Eyes’ LEAF LENGTH (mm) mean 33.3 54.3 66.4 26.5 std deviation 7.5 6.2 10.7 5.5 LSD/sig 11.9 P≤0.01 P≤0.01 ns LEAF WIDTH (mm) mean 17.9 22.9 31.5 17.8 std deviation 5.3 4.4 8.3 4.1 LSD/sig 8.9 ns P≤0.01 ns SCAPE LENGTH (mm) mean 72.1 91.5 128.2 35.0 std deviation 9.9 14.6 16.9 3.2 LSD/sig 17.8 P≤0.01 P≤0.01 P≤0.01 INFLORESCENCE DIAMETER (mm) Mean 21.4 27 28.2 12.4 std deviation 2.0 1.4 2.1 1.1 LSD/sig 2.7 P≤0.01 P≤0.01 P≤0.01 RAY FLORET COLOUR (RHS) violet purple purple violet (85C) (76A) (76A-76B) (87B) BUFFALO GRASS (ST AUGUSTINE GRASS) Stenotaphrum secundatum ‘SS100’ Application No: 96/158 Accepted: 7 Aug 1996. Applicant: Sod Solutions, Mt. Pleasant, South Carolina, USA. Agent: Davies Collison Cave Patent Attorneys, Melbourne, VIC. Characteristics (Table 9, Figure 35) Plant: perennial, stoloniferous grass. Stem: green, internodes medium. Leaf: sheath medium length, green (RHS 138B, 1986), blade medium length and width, green (RHS 137C, 1986). Inflorescence: spike – like panicle. Flower: anther orange yellow, stigma white. Origin and Breeding Spontaneous mutation: ‘SS100’ was identified in proximity to buffalo grass (also known as St Augustine grass in USA) plantings including ‘Bitterblue’, ‘Floratam’ on a turf farm near Samsula, Florida, USA. ‘SS 100’ differs from commonly grown varieties ‘Bitterblue’, ‘Raleigh’ and ‘Floratam’ in several characteristics. For example, ‘SS100’ had shorter internodes and ‘Bitterblue’, ‘Raleigh’ and ‘Floratam’ had much longer internodes. ‘SS100’ had orange yellow anthers whereas ‘Raleigh’ had sulphur yellow anthers. ‘SS100’ and ‘Raleigh’ differed from ‘Bitterblue’ and ‘Floratam’ in having white compared with purple stigmas and 18 compared with 27 chromosomes. Selection criteria: distinctive dark green colour, tolerance to shade, cold temperature, frost and drought. Propagation: asexual propagation was carried out by cutting stolons into segments, each segment containing at least one node, and planting segments directly into soil and into plug trays. Selected traits were maintained when propagated asexually. ‘SS100’ will be commercially propagated vegetatively by turf and stolons to maintain uniformity and stability. Breeder: Elmer R. Kirkland and Tobey A. Wagner, New Smyrna, Florida. and Mt Pleasant, South Carolina, USA. Choice of Comparators ‘Sir Walter’ A , ‘Shademaster’, ‘ST 85’ and a common form from Sydney were chosen as comparators as these are the most similar varieties of common knowledge in Australia. Naturalised clones from Moonta SA, Tamworth NSW, Toowoomba and Redland Bay QLD were collected and compared with the above comparators. They were morphologically similar to the common buffalo grass and were excluded from the comparative trial. The candidate putative parents were not considered for the trial because they were distinctive from ‘SS100’ in characteristics mentioned above. Comparative Trial Comparators: ‘Sir Walter’ A , ‘Shademaster’, ‘ST 85’ and a common form from Sydney. Location: Clifton Park Turf Supplies, 282 Mountain Ridge Road, Maclean, QLD. Trial planted on 24 Dec 1998. Conditions: plants raised vegetatively under irrigated conditions. Trial design: randomised blocks with four replicates, in each a 2x2m irrigated field plot, five varieties were planted vegetatively from 75mm diameter, 50mm deep cores, one core per variety in each plot. Measurements: mean leaf blade length and width, leaf sheath length and internode length were recorded for five stolons per plant (plot) on 20 March 1999 and leaf blade, leaf sheath (RHS, 1986), stolon, anther and stigma colours were recorded for each variety. Prior Applications and Sales Country Year Current Status Name Applied USA 1994 Granted ‘SS-100’ Plant Patent 9,395 First sold in USA on 5 April 1995. First Australian sale nil. Description: Dr. Walter Scattini, Agricultural Consultant, Kelvin Grove, Brisbane, QLD. 26
DESCRIPTIONS PLANT VARIETIES JOURNAL 1999 VOL 12 NO. 2 Table 9 Stenotaphrum varieties ‘SS100’ *‘Sir Walter’ *‘Shademaster’ *‘ST 85’ *Common LENGTH OF FIRST LEAF ON FOURTH NODE FROM TIP OF STOLON (mm) mean 19.4 27.0 21.3 11.9 24.1 std deviation 6.30 6.28 6.38 1.10 2.88 LSD/sig 9.50 ns ns ns ns WIDTH OF FIRST LEAF ON FOURTH NODE FROM TIP OF STOLON (mm) mean 5.8 7.7 6.0 4.5 7.6 std deviation 1.19 0.84 1.23 0.16 1.06 LSD/sig 1.77 P≤0.01 ns ns P≤0.01 LENGTH OF SHEATH OF FIRST LEAF ON FOURTH NODE FROM TIP OF STOLON (mm) mean 21.1 23.0 23.6 14.4 26.8 std deviation 1.66 1.04 1.89 0.95 3.72 LSD/sig 3.59 ns ns P≤0.01 P≤0.01 LENGTH OF FOURTH INTERNODE FROM TIP OF STOLON (mm) mean 46.7 58.6 55.7 34.9 60.0 std deviation 9.18 6.74 6.99 6.55 7.55 LSD/sig 12.1 ns ns ns P≤0.01 LEAF BLADE COLOUR (RHS) 137C 137C 137C 137C 137C LEAF SHEATH COLOUR (RHS) 138B 138B 138B 138B 138B STOLON COLOUR green green mottled red red red red ANTHER COLOUR orange yellow orange yellow orange yellow purple sulphur yellow STIGMA COLOUR white purple purple purple purple COUCH GRASS Cynodon dactylon ‘Plateau’ Application No: 98/023 Accepted: 23 Mar 1998. Applicant: Triodia Pty Ltd, Narrabeen, NSW. Characteristics (Table 10, Figure 34) Plant: habit prostrate, dense, spreading. Unmown height short (mean 35.09mm). Stem: long spreading stolons (mean width 1.06mm), internode short (mean node frequency 5.03 per cm length), strongly rhizomatous (mean width 1.93mm). Leaf: length short (mean 20.83mm), width narrow (mean 2.31mm), colour green (RHS 137A-B, 1995). Inflorescence: digitate, anther colour red/purple (RHS 74D 1986.), seed head frequency medium (9.17 per 100 cm). Origin and Breeding Spontaneous mutation: of common couch grass (Cynodon dactylon) growing on the property of the breeder at Collaroy Plateau, NSW in 1975. The parent plant was characterised by upright shoot growth, thick stolons, long internode length, long leaf length and high seed head frequency. The mutant variety ‘Plateau’ differs in the following characteristics by low growing height, prostrate shoot growth, short internode length, narrow stolon to rhizome width ratio and medium seed head frequency. Vegetative propagation of the mutant stolons was carried out in 1975. Ten stolon sections were planted in pots and grown on. The potted material was further divided and planted out to 50 pots in 1976. From this material, a section of lawn was established at the breeders property in 1978. From the lawn planting, vegetative material of ‘Plateau’ was planted into 12 pots. This potted material was transferred and planted into the ground as one plot measuring 3x2 m 2 at the Narrabeen RSL bowling green trial site in 1997. From this plot, stolons of ‘Plateau’ were transferred to the prepared trial site on the same green. At all generations, ‘Plateau’ has remained uniform and stable. Selection criteria: low growth, prostrate spreading habit, short internode length and high sward density. Propagation: ‘Plateau’ will be commercially propagated by vegetative sod and stolons from stock plants. Breeder: Peter Brown, Collaroy Plateau, NSW. Choice of Comparators ‘Riley’s Super Sport’ A was chosen as the most similar variety of common knowledge, forming a dense turf of low growing height. The second comparator, ‘Greenlees Park’ is a widely available commercial variety of the same species and is the parent of ‘Riley’s Super Sport’. Although ‘Greenlees Park’ has a higher growth height and more upright shoot habit than the candidate variety, it was chosen as being representative in growth habit of the majority of commercially available varieties of common knowledge. The parent of the candidate variety ‘Plateau’ was not included in the trial because of its obvious difference in growth habit mentioned above. Comparative Trial Comparators: ‘Riley’s Super Sport’ A , ‘Greenlees Park’, Narrabeen RSL Bowling Club, Nareen Parade, Narrabeen, NSW. Summer 1998-99. Conditions: twelve turf plot established in the field, trial irrigated and fertilized as required at standard rates. Two insecticide treatments applied in the growing season. No mowing was 27
Page 1 and 2: Plant Varieties Journal Quarter Two
Page 3 and 4: PLANT VARIETIES JOURNAL 1999 VOL 12
Page 7 and 8: PBR AMENDMENTS PLANT VARIETIES JOUR
Page 13 and 14: ACCEPTANCES PLANT VARIETIES JOURNAL
Page 19 and 20: DESCRIPTIONS PLANT VARIETIES JOURNA
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GRANTS PLANT VARIETIES JOURNAL 1999
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SERVICE DIRECTORY WARATAH SEED CO.
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56. Volume 12- Number 2 - IP Australia

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