Stenotaphrum Secundatum 'B12'


Application No: 2002/342 Accepted: 13 Dec 2002.
Applicant: Todd Layt, Clarendon, NSW


Plant: growth cycle perennial, proliferation stoloniferous, growth habit prostrate (becoming erect when flowering). Culms: branching present, texture glabrous. Stolon: roots at nodes present, internode length (4th from tip) medium-long (mean 48.6mm), average internode length (internodes 4 to 6 from tip) medium-long (mean 50.4mm), colour yellow-green (RHS 144A) at node changing to yellow-green (RHS 148A) along internode, diffuse with brown (RHS 200A) becoming predominantly brown (RHS 200A) on upper exposed side of internode with maturity. Leaf: sheath length medium (mean 19.1mm), colour green (RHS 138B), blade length medium (mean 20.2mm), blade width medium (mean 6.4mm), colour green (RHS 137A), apex acute. Inflorescence: spike – like panicle. (Note: all RHS colour chart numbers refer to 1995 edition.)

Origin and Breeding

Open pollination followed by seedling selection: from ‘Sir Walter’. The parent is characterised by a long average internode length and intense purple internode colour. Selection took place in Clarendon, NSW in 2001. Selection criteria: greener internode colour and shorter internode length. Propagation: vegetative cuttings were found to be uniform and stable. Breeder: Todd Layt, Clarendon, NSW.

Choice of Comparators

The grouping characteristics used in identifying the most similar varieties of common knowledge were - Stolon: internode length medium-long, internode colour purple and brown. Based on this, ‘Sir Walter’ and ‘Shademaster’ were selected as the most similar suitable comparators. ‘SS100’ was initially considered for the trial, but was excluded due to the absence of any purple or brown colouration of the internode. ‘ST85’ was initially considered for the trial and was excluded due to its dark purple internode colour and shorter internode length. No other similar varieties were identified.

Comparative Trial

Location: Clarendon, spring-summer 2002. Conditions: trial conducted in open beds, plants propagated from cutting, rooted cuttings planted into 140mm pots filled with soilless potting mix, nutrition maintained with slow release fertilisers, pest and disease treatments applied as required. Plants did not flower during trial. Trial design: thirty pots of each variety arranged in a completely randomised design. Measurements: from ten plants at random. One sample per plant.

  • Description: Ian Paananen, Crop & Nursery Services, Central Coast, NSW.
  • Details taken from Plant Breeders Rights Website.