Plant Variety Journal - IP Australia

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Plant Varieties Journal Vol. 23 Number 4 the GH in 1999 and the first field observations of the F2 population were made in winter 2000 at Roseworthy. 130 elite plants were selected and grown as F3 families in 2001 at Roseworthy. After three years of agronomic and end use quality evaluation an elite line (CO5823-106) was identified and reselections taken from the F2 derived F6 family. These were multiplied over summer in Horsham, and a line (CO5823-106-28) progressed to national trialling. This line (now code named RAC1423) was then evaluated for 5 years across Australia for yield, disease resistance and end use quality. RAC1423 has been included in the NVT evaluation system for four years. Choice of Comparators Characteristics used for grouping varieties to identify the most similar Variety of Common Knowledge Organ/Plant Part Context State of Expression in Group of Varieties Plant time of ear emergence 268 to 272 Julian days (early) Ear glume colour white Auricle anthocyanin coloration strong Ear presence of awns fully awned Plant seasonal type spring Most Similar Varieties of Common Knowledge identified (VCK) Name Comments ‘KUKRI’ Parent and very similar morphologically, lower yielding. Varieties of Common Knowledge identified and subsequently excluded Variety Distinguishing Characteristics State of Expression State of ‘YENDA’ Plant time to ear emergence ‘Westonia’ Flag leaf anthocyanin colouration of auricles ‘Axe’ Flag leaf anthocyanin colouration of auricles in Candidate Variety Expression in Comparator Variety Comments early medium to late only other VCK with dark coloured auricles. strong absent or very weak strong absent or very weak more of the comparators are marked with a tick. Organ/Plant Part: Context ‘AGT Katana’ ‘KUKRI’ *Plant: growth habit erect to semi-erect erect to semi-erect Flag leaf: anthocyanin colouration of auricles strong strong Plant: frequency of plants with recurved flag leaves high medium to high *Time of: ear emergence early to medium medium *Flag leaf: glaucosity of sheath medium weak to medium *Ear: glaucosity medium to strong weak to medium Culm: glaucosity of neck medium to strong weak to medium Page 246 of 322
Plant Varieties Journal Vol. 23 Number 4 *Plant: length short to medium medium to long *Straw: pith in cross section thin thin *Ear: shape in profile parallel sided tapering *Ear: density medium to dense lax to medium Ear: length medium medium to long *Awns or scurs: presence awns present awns present *Awns of scurs at tip of ear: length medium medium *Ear: colour white white Apical rachis segment: hairiness of convex surface weak weak Lower glume: shoulder width narrow medium Lower glume: shoulder shape straight straight to elevated Lower glume: beak length medium to long medium Lower glume: beak shape straight to slightly slightly curved to curved moderately curved Lowest lemma: beak shape straight straight *Grain: colour white white *Seasonal type: spring type spring type Glutenin composition: allele expression at locus Glu-A1 band 1 band 1 Glutenin composition: allele expression at locus Glu-D1 bands 5+10 bands 5+10 Characteristics Additional to the Descriptor/TG Organ/Plant Part: Context ‘AGT Katana’ ‘KUKRI’ Glutenin composition: allele expression at GluA3 d d Glutenin composition: allele expression at GluD1 d d Glutenin composition: allele expression at GluB3 b h Glutenin composition: allele expression at GluD3 b b Glutenin composition: allele expression at GluB1 al al Glutenin composition: allele expression at GluA1 a a Statistical Table Organ/Plant Part: Context ‘AGT Katana’ ‘KUKRI’ Plant: height including awns (cm) Mean 97.70 102.90 Std. Deviation 2.81 3.26 LSD/sig 3.00 P≤0.01 Flag leaf blade: length (mm) Mean 174.50 200.13 Std. Deviation 29.30 21.83 Page 247 of 322
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Plant Variety Journal - IP Australia

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