49. Volume 14- Number 1 - IP Australia

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PLANT VARIETIES JOURNAL 2001 VOL 14 NO. 1 ‘Glen Avon’ syn Summer Blue Application No: 1998/147 Accepted: 7 Sep 1998. Applicant: Lifetech Laboratories Limited, Auckland, New Zealand. Agent: Avondale Nurseries Limited, Glenorie, NSW. Characteristics (Table 3, Figure 7) Plant: habit erectarching, evergreen, height medium-tall. Leaf: upright, arching, length long (average 465mm), width medium (average 44.1mm), variegation absent, colour yellow-green (RHS 146A) glossiness dull. Inflorescence: umbel, flower count high, peduncle length medium-tall, diameter medium, colour yellow-green (RHS 146A), speckling absent. Flower: medium-late, pedicel medium, diameter medium (average 34.2mm), length medium (average 41.8mm), corolla lobes usually 6, immature flower bud violet-blue (RHS 91D) with green (RHS 144A), mature flower bud violet-blue (RHS 91C), inner perianth main colour violetblue (RHS 92D) with stripe violet-blue (RHS 91A) with white (RHS 155D) near anterior margin of lobe, pedicel yellow-green (RHS 144A), pollen greyed-yellow (RHS 160A), filament, stigma and style violet-blue (RHS 92D) fading to white (RHS 155D) at base, fragrance weak, infrequent. (Note: all RHS colour chart numbers refer to 1995 edition). Origin and Breeding Open pollination followed by seedling selection: seed parent and pollen parent un-named A. orientalis. The parents were standard blue forms characterised by early flowering, low flower count and green non-variegated leaves. Open pollinated seed was sown in 1988 and selection took place in New Plymouth, New Zealand in 1991. Selection criteria: flower number per inflorescence and fragrance. Propagation: vegetative divisions and subsequent micropropagation were found to be uniform and stable. ‘Glen Avon’ will be commercially propagated by micropropagation from the original divisions. Breeder: Alan D Gray, New Plymouth, New Zealand. Choice of Comparators Agapanthus orientalis standard blue form was chosen because it is the original source material from which the variety was selected. ‘Lavender Haze’ and ‘Blue Brush’ have the most similar combination of flower colour, number and growth habit. No other similar varieties of common knowledge have been identified. Comparative Trial Location: Glenorie, NSW, Dec 1999- Dec 2000. Conditions: trial conducted in the open, plants propagated from divisions, planted into 300mm pots filled with soilless potting mix (pine bark base), nutrition maintained with slow release fertilisers, pest and disease treatments applied as required. Trial design: ten to fifteen pots of each variety arranged in a completely randomised design. Measurements: from ten plants at random. Prior Applications and Sales Country Year Current Status Name Applied New Zealand 1997 Granted ‘Glen Avon’ Japan 1998 Applied ‘Glen Avon’ South Africa 1998 Granted ‘Glen Avon’ First sold in New Zealand in Oct 1997. First Australian sale 1999. Description: Ian Paananen, Crop & Nursery Services, Central Coast, NSW. Table 3 Agapanthus varieties ‘Snow Cloud’ ‘Glen Avon ‘Blue Brush’ ‘Lavender ‘Regal * A orientalis * A orientalis Haze’ Beauty’ Blue form White form ______________________________________________________________________________________________________________ PLANT HEIGHT (cm) LSD (P≤0.01) = 12.1 – maximum including inflorescence mean 105 b 108 b 139 a 86 c 128 a 112 b 100 b std deviation 7.5 10.7 7.5 14.6 9.9 9.9 14.8 ______________________________________________________________________________________________________________ FOLIAR HEIGHT (cm) LSD (P≤0.01) = 7.1 – maximum with natural leaf position and excluding inflorescence mean 54.5 acd 54.5 bcd 62.9 a 62.2 a 52.4 d 51.7 d 43.6 e std deviation 7.4 7.4 5.1 4.4 6.0 9.2 6.8 ______________________________________________________________________________________________________________ LEAF ATTITUDE erect arching arching erect arching erectarching erect ______________________________________________________________________________________________________________ LEAF LENGTH (mm) LSD (P≤0.01) = 67.8 – from junction of peduncle and largest leaf of first flower stem mean 466 a 465 a 502 a 507 a 559 a 479 a 375 b std deviation 42.1 59.6 46.3 83.5 50.2 85.2 51.6 ______________________________________________________________________________________________________________ LEAF WIDTH (mm) LSD (P≤0.01) = 8.6 – widest point of same leaf as for length measure mean 32.8 b 44.1 ab 42.2 ab 32.7 b 49.9 a 41.2 ab 38.2 ab std deviation 3.0 4.7 4.8 11.4 12.3 8.5 6.1 ______________________________________________________________________________________________________________ LEAF COLOUR (RHS 1995) 146A-147A 146A(dull) 146A-147A 146A-147A 146A-147A 146A-147A 146A-147A ______________________________________________________________________________________________________________ 20
DESCRIPTIONS PLANT VARIETIES JOURNAL 2001 VOL 14 NO. 1 INFLORESCENCE: FREQUENCY OF SECONDARY BRANCHING OF PEDICELS – as in a compound umbel very low very low very low very low high very low very low ______________________________________________________________________________________________________________ INFLORESCENCE DIAMETER (mm) LSD (P≤0.01) = 23.2 – primary inflorescence mean 170 e 210 c 192 a 261 b 287 a 211 c 234 bc std deviation 10.2 26.1 15.6 18.3 23.9 23.9 25.1 ______________________________________________________________________________________________________________ NUMBER OF FLOWERS PER INFLORESCENCE LSD (P≤0.01) = 89.2 – primary inflorescence mean 255 be 254 be 300 be 234 ce 452 a 131 cd 131 d std deviation 57.5 63.5 99.6 55.0 133.1 52.0 45.3 ______________________________________________________________________________________________________________ PEDUNCLE LENGTH (cm) LSD (P≤0.01) = 10.3 – primary inflorescence mean 89.3 c 91 c 121 a 71.7 d 107.4 b 95.1 c 81.8 cd std deviation 5.5 10.3 6.6 11.5 7.1 9.4 12.7 ______________________________________________________________________________________________________________ PEDUNCLE DIAMETER (mm) LSD (P≤0.01) = 4.6 – primary inflorescence, measured 300mm below umbel mean 13.6 b 15.1 b 13.3 b 23.1 a 20.2 a 11.9 b 14.3 b std deviation 1.1 2.3 1.5 9.7 4.8 1.5 2.2 ______________________________________________________________________________________________________________ PEDUNCLE COLOUR (RHS 1995) 146A 146A 146A 146A 146A 146A 146A ______________________________________________________________________________________________________________ PEDUNCLE SPECKLING absent absent present absent absent absent absent ______________________________________________________________________________________________________________ FLOWER DIAMETER (mm) LSD (P≤0.01) = 5.5 – widest cross-section wing to wing mean 32.5 b 34.2 b 31.4 b 38.7 b 37.4 b 48.1 a 45.8 a std deviation 2.7 3.6 2.4 2.9 5.0 8.3 6.7 ______________________________________________________________________________________________________________ FLOWER LENGTH (mm) LSD (P≤0.01) = 3.1 – from base of ovary to corolla lobe mean 35.9 d 41.8 bc 43.7 ab 38.9 cd 46.3 a 45.4 ab 42.3 abc std deviation 1.7 3.8 1.7 2.1 1.8 4.0 3.4 ______________________________________________________________________________________________________________ PERIANTH LOBE LENGTH (mm) LSD (P≤0.01) = 2.5 – standard petal, from base of incision to apex mean 27.2 b 26.6 b 26.6 b 30.2 a 32.1 a 32.4 a 32.0 a std deviation 3.9 1.8 1.5 1.2 1.3 1.7 3.0 ______________________________________________________________________________________________________________ FLOWER COLOURS (RHS, 1995) Flower bud: immature white violet-blue violet-blue violet-blue violet-blue violet-blue white 155D 91D & 94C 94C 94D 91A-94B 155D green 144A mature white violet-blue violet-blue violet-blue violet-blue violet-blue white 155D 91C 94B 93C 93B 94B 155D Inner perianth: main colour white violet-blue violet-blue violet-blue violet-blue violet-blue white 155D 92D 94D 92C 94B 94C-D 155D stripe absent violet-blue violet-blue violet-blue violet-blue violet-blue absent 91A* 94B* 91A-92A* 93A* 94B* * In the violet-blue flowers there is some white 155D between the stripe and the anterior margin of the lobe Outer perianth: main colour white violet-blue violet-blue violet-blue violet-blue violet-blue white 155D 92D 94C 92B 94B 94C-D 155D stripe absent violet-blue violet-blue violet-blue violet-blue violet-blue absent 91B-C 94A-B (weak) 91A-92A 93A 94B (weak) pollen yellow-orange greyed-yellow greyed-yellow greyed-yellow greyed-yellow greyed-yellow yellow-orange 17A 160A 160A 160A 160A 160A 17A 21
Page 1 and 2: Plant Varieties Journal Quarter One
Page 3 and 4: PLANT VARIETIES JOURNAL 2001 VOL 14
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GRANTS PLANT VARIETIES JOURNAL 2001
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VARIATIONS PLANT VARIETIES JOURNAL
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CORRIGENDA PLANT VARIETIES JOURNAL
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49. Volume 14- Number 1 - IP Australia

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