PPS06-284

Rapeseed

Denomination: 'PPS06-284'
Botanical Name: Brassica napus
Applicant/Holder: Bayer CropScience Inc.
Site 600, R.R. #6
P.O. Box 117
Saskatoon, Saskatchewan
S7K 3J9
Canada
Breeder: Hieronim Polewicz, Bayer CropScience Inc., Saskatoon, Saskatchewan
Application Date: 2008-07-14
Application Number: 08-6401
Protective direction granted: 2008-07-14
Grant of Rights Date: 2010-02-24
Certificate Number: 3798
Date rights surrendered: 2015-02-11

Variety Description

Varieties used for comparison: 'PPS98-274', 'PPS02-364' and '5030'

Summary: 'PPS06-284' flowers later than 'PPS02-364' but earlier than 'PPS98-274'. The plant height at maturity of 'PPS06-284' is shorter than '5030'. 'PPS06-284' has a shorter petiole than '5030'. The silique and pedicel of 'PPS06-284' is shorter than in 'PPS98-274' and '5030'. 'PPS06-284' has higher erucic acid content than 'PPS98-274', 'PPS02-364' and '5030'. The oil content as a percentage in whole dried seed of 'PPS06-284' is higher than in 'PPS98-274' and '5030'.

Description:

PLANT: inbred restorer line, spring seasonal type, medium height at maturity

COTYLEDON: narrow to medium width, short to medium length

LEAF: dark green, medium number of lobes, rounded to sharp margin type, medium density of moderately deep indentations, short to medium length, medium to wide width, short to medium length petiole

FLOWER PETALS: yellow, medium length, narrow to medium width

SILIQUE: semi-erect to horizontal attitude, medium length, medium to wide, medium length beak, short pedicel

SEED: black

AGRONOMIC CHARACTERISTICS: fair to good resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 41.2% of total fatty acids, oil content is 51.4% of whole dried seed, protein is 26.6% of dried oil free meal, low glucosinolates (13.3 µmol/g)

HERBICIDE RESISTANCE: tolerant to glufosinate ammonium

DISEASE RESISTANCE: resistant to moderately resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam) and resistant to White Rust (Albugo candida, races 7a & 2v)

Origin & Breeding History: 'PPS06-284' is a high erucic acid restorer line used in F1 hybrid production. Backcrossing was done in Canada in 2003 and 2004 introgressing the Rf3 gene in the homozygous state. A doubled haploid was extracted from the F1 generation which became 'PPS06-284. In 2005, 'PPS06-284' was selected on the basis of fertility restoration and expression of tolerance to glufosinate-ammonium herbicide. Other selection criteria included erucic acid content, height, vigour, maturity, blackleg resistance, oil content, fatty acid profile, glucosinolate content and combining ability.

Tests & Trials: Tests and trials were conducted during the summers of 2007 and 2008 in Saskatoon, Saskatchewan. Plots consisted of 3 rows, with a row length of 6 metres and a row spacing of 40 cm. There were 2 replicates arranged in a RCB design.


Comparison tables for 'PPS06-284' with reference varieties 'PPS98-274', 'PPS02-364' and '5030'

Means are based on a two year average of 60 plant parts for petiole, silique, beak and pedicel characteristics. Differences are significant at the 2% probability level based on LSD values.

Days to flowering

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean 44.0 47.0 42.0 45.0

Petiole length (mm)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=23) 105 115 103 136
std. deviation 15 21 20 19

Silique length (mm)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=6.4) 53.6 62.6 58.7 60.5
std. deviation 4.8 4.2 5.2 5.2

Pedicel length (mm)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=3.5) 17.0 21.9 17.5 20.5
std. deviation 1.8 2.4 2.0 1.8

Plant height at maturity (cm)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=15) 118 132 113 138
std. deviation 5.1 7.4 5.3 8.9

Erucic acid levels (% of total fatty acids)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean 41.2 0.01 0.04 0.17

Oil content (% in whole dried seed)

  'PPS06-284' 'PPS98-274' 'PPS02-364' '5030'
mean 51.4 47.2 49.1 47.4

Click on image for larger view
PPS06-284
Rapeseed: 'PPS06-284' (left) with reference varieties 'PPS98-274' (centre left), 'PPS02-364' (centre right) and '5030' (right)

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