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47. Volume 14- Number 2 - IP Australia

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PLANT VARIETIES JOURNAL 2001 VOL <strong>14</strong> NO. 2<br />

Table 9 Digitaria varieties<br />

‘Aussiblue’ *‘Queensland<br />

Blue Couch’<br />

____________________________________________________<br />

LENGTH OF THE LONGEST STOLON (mm)<br />

mean <strong>14</strong>00 1066<br />

std deviation 180 191<br />

LSD/sig 107 P≤0.01<br />

____________________________________________________<br />

LENGTH OF FOURTH INTERNODE FROM T<strong>IP</strong> OF<br />

STOLON (mm)<br />

mean 26 21<br />

std deviation 2.9 2.8<br />

LSD/sig 2.1 P≤0.01<br />

____________________________________________________<br />

LENGTH OF LEAF SHEATH ON 4th NODE FROM T<strong>IP</strong> OF<br />

STOLON (mm)<br />

mean 19 13<br />

std deviation 2.1 1.7<br />

LSD/sig 1.3 P≤0.01<br />

____________________________________________________<br />

WIDTH OF FIRST LEAF BLADE ON 4th NODE FROM T<strong>IP</strong><br />

OF STOLON (mm)<br />

mean 2.7 1.7<br />

std deviation 0.29 0.46<br />

LSD/sig 0.23 P≤0.01<br />

____________________________________________________<br />

LEAF COLOUR (RHS, 1986)<br />

137B 137A<br />

____________________________________________________<br />

LENGTH OF CULM ABOVE TOP NODE (mm)<br />

mean 170 80<br />

std deviation 39 20<br />

LSD/sig 25 P≤0.01<br />

____________________________________________________<br />

NUMBER OF RACEMES<br />

mean 2.8 2.1<br />

std deviation 0.49 0.30<br />

LSD/sig 0.2 P≤0.01<br />

____________________________________________________<br />

LENGTH OF RACEME (mm)<br />

mean 73 32<br />

std deviation 15.1 8.8<br />

LSD/sig 8.9 P≤0.01<br />

____________________________________________________<br />

Euphorbia pulcherrima<br />

Poinsettia<br />

‘Duepre’<br />

Application No: 2001/<strong>14</strong>8 Accepted: 11 Jun 2001.<br />

Applicant: Marga Dümmen, Dammweg, Rheinberg,<br />

Germany.<br />

Agent: F & I Baguley Flower & Plant Growers, Clayton<br />

South, VIC.<br />

Characteristics (Table 10, Figure 23) Plant: habit compact,<br />

branching present, number of branches medium, height<br />

medium, width medium. Stem: colour reddish, intensity of<br />

colour medium. Leaf blade: length medium, width medium,<br />

shape broad ovate, shape of base wedge-shaped, number of<br />

colours one, colour of leaf very dark green, colour of main<br />

vein on upper side greenish, colour of main vein on lower<br />

side greenish, number of lobes very few, depth of lobes<br />

shallow. Petiole: length medium, colour of upper side<br />

34<br />

reddish, intensity of colour of upper side strong, colour of<br />

lower side reddish, intensity of colour of lower side<br />

medium. Flowering Zone: number of bi-coloured<br />

transitional bracts very few, number of uniform coloured<br />

leaf bracts many, number of uniform coloured inflorescence<br />

bracts medium, distance between the upper and lower bracts<br />

medium, distribution of bract colour of upper side uniform,<br />

colour of upper side red (RHS 53B), colour of lower side<br />

red (RHS 53C). Bract: folding absent, curving absent,<br />

twisting absent, intensity of rugosity between veins weak.<br />

Inflorescence bract: length of largest bract medium, width<br />

of largest bract medium, shape broad ovate. Cyme: width<br />

medium. Cyathium: size of glands large, colour of glands<br />

yellow, intensity of colouration of margin of glands weak,<br />

time of opening of first three cyathia early, persistence<br />

medium. (Note: all RHS colour chart readings refer to 1995<br />

edition.)<br />

Origin and Breeding Controlled pollination: female parent<br />

94-513-6 x pollen parent E-20-01. The female parent is<br />

characterised by bright red bract colour, dark green leaves,<br />

later flowering, good branching, medium compactness and<br />

medium height. Hybridisation took place in Rheinberg,<br />

Germany in 1996, seedlings were propagated in 1997 and<br />

selections and trials were made in 1999. The candidate was<br />

selected because it differed from both parents by being<br />

earlier flowering and more compact in growth. Vegetative<br />

propagation over two generations established uniformity<br />

and stability. Selection criteria: early response time with a<br />

natural, strong, rounded habit, good branching, smooth<br />

bracts, robust and having a good shelf life. ‘Duepre’ is<br />

commercially propagated by vegetative cuttings from stock<br />

plants. Breeder: Marga Dümmen, Rheinberg, Germany.<br />

Choice of Comparators The candidate variety is described<br />

as having compact growth habit, dark foliage, short<br />

response time with very intense red bract colour. The<br />

varieties ‘Duedeluxe’ A syn Red Fox De Luxe A ,<br />

‘Duespot’ A syn Red Fox Spotlight Dark Red A , and<br />

‘Dueimco’ A syn Red Fox Coco 2000 A were chosen as the<br />

most suitable comparators on the basis of similar<br />

characteristics with candidate variety. ‘V10 Red’, ‘Fiscor’ A<br />

syn Cortez Red A (Flora Nova), ‘490 Red’ A syn Eckespoint<br />

Freedom Red A , ‘Lilo’ (Eckespoint), ‘Success’<br />

(Eckespoint), ‘Pepride’ (Eckespoint), ‘Duelebri’ syn Red<br />

Fox Elegance Bright Red, ‘Duesonata’ syn Red Fox Sonata,<br />

‘Duemal’ syn Red Fox Malibu Red and other Red Fox<br />

varieties all have red coloured bracts but were not selected<br />

because either one or more of the described characteristics<br />

did not match with the candidate variety or they have less<br />

flat and less smooth bracts.<br />

Comparative Trial Location: trials conducted at F&I<br />

Baguley Flower and Plant Growers, Clayton South, VIC<br />

between Jan-May 2001. Conditions: Plants raised on their<br />

own roots from cuttings planted into 150mm pots in<br />

commercial pine bark potting mix on raised glasshouse<br />

benches. Pots were watered and fed using a drip system<br />

(one dripper/pot). The glasshouse had blackout facilities for<br />

flower regulation and the glasshouse walls and roof were<br />

sprayed with whitewash. All plants were subjected to<br />

normal glasshouse spray treatments to maintain health.<br />

Trial design: 10 to 20 pots of each variety were arranged in<br />

a block design. Measurements: from all trial plants.

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