PPS08-169 A-Line

Rapeseed

Denomination: 'PPS08-169 A-Line'
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: 2009-07-21
Application Number: 09-6699
Protective direction granted: 2009-07-21
Grant of Rights Date: 2011-02-22
Certificate Number: 4012
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2013-02-22
Date rights surrendered: 2015-02-11

Variety Description

Varieties used for comparison: 'PPS01-140 A-Line', 'PPS02-144 A-Line' and '5020'

Summary: The cotyledon of 'PPS08-169 A-Line' is longer and wider than that of 'PPS01-140 A-Line'. 'PPS08-169 A-Line' has a light green leaf colour while it is medium green in 'PPS01-140 A-Line' and '5020'. The leaf margin of 'PPS08-169 A-Line' has a very low to low density of dentations while they are of medium density for 'PPS02-144 A-Line' and '5020'. 'PPS08-169 A-Line' has a longer leaf petiole than that of 'PPS02-144 A-Line'. 'PPS08-169 A-Line' flowers earlier than 'PPS01-140 A-Line'. The flower petal of 'PPS08-169 A-Line' is longer and wider than that of 'PPS01-140 A-line' but shorter and narrower than that of '5020'. 'PPS08-169 A-Line' has a longer silique than that of 'PPS01-140 A-Line' but shorter than that of '5020'. The beak of 'PPS08-169 A-Line' is longer than that of 'PPS01-140 A-Line' but shorter than that of 'PPS02-144 A-Line' and '5020'. 'PPS08-169 A-Line' has a longer pedicel than that of 'PPS01-140 A-Line'. The plant height of 'PPS08-169 A-Line' at maturity is shorter than that of 'PPS01-140 A-Line'. 'PPS08-169 A-Line' has higher erucic acid levels than that of the reference varieties. The seed of 'PPS08-169 A-Line' has a higher oil content than that of 'PPS01-140 A-Line' and 'PPS02-144 A-Line'.

Description:

PLANT: male sterile inbred line, glufosinate ammonium tolerant, spring seasonal type, short to medium height at maturity

COTYLEDON: wide, medium to long

LEAF: light green, medium number of lobes, rounded margin, very low to low density of shallow dentations, medium length, medium to wide, medium length petiole

FLOWER PETALS: yellow, medium length, medium to wide

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

SEED: black

AGRONOMIC CHARACTERISTICS: fair resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 38.9% of total fatty acids, oil content is 50.9% of whole dried seed, protein is 28.7% of dried oil free meal, low glucosinolates (12.2 µmol/g)

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

Origin & Breeding History: 'PPS08-169 A-line' is a male sterile inbred line used in F1 hybrid production, that contains the Ms8 gene construct in heterozygous state. The initial cross took place in Canada in 2000, with subsequent backcrosses occurring in 2003 and 2004. It was selected in 2005 and 2006 on the basis of male sterility stability, expression of tolerance to glufosinate ammonium herbicide and good combining ability with numerous restorer lines. Other selection criteria included erucic acid content, height, vigour, maturity, blackleg resistance, oil content, fatty acid profile and glucosinolate content.

Tests & Trials: Trials were conducted during the summers of 2008 and 2009 in Saskatoon, Saskatchewan. Plots consisted of 3 rows with a row length of 6 meters and a row spacing of 50 cm. There were 3 replicates arranged in a RCB design.


Comparison tables for 'PPS08-169 A-Line' with reference varieties 'PPS01-140 A-Line', 'PPS02-144 A-Line' and '5020'

Means are based on a two year average of 40 measurements for cotyledon characteristics, 30 for plant height and 60 plant parts for leaf, petiole, flower petal, silique, beak and pedicel characteristics. Differences are significant at the 2% probability level based on LSD values.

Cotyledon width (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=3.8) 28.3 23.1 27.3 27.7
std. deviation 3.1 1.6 2.8 3.3

Cotyledon length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2.9) 16.5 12.4 15.7 15.8
std. deviation 2.8 0.9 1.4 1.5

Petiole length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=17) 106 92 81 112
std. deviation 17 12.6 13.1 14.9

Days to flowering

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2.4) 43.5 47.0 43.0 42.0

Flower petal length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=1.2) 13.9 10.7 13.0 17.1
std. deviation 1.0 0.8 0.8 0.8

Flower petal width (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=0.91) 6.7 5.8 6.9 7.8
std. deviation 0.7 0.8 0.6 0.6

Silique length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2) 61.9 56.5 62.2 65.4
std. deviation 8.9 5.4 9.0 5.0

Beak length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=0.6) 13.2 7.5 14.3 14.6
std. deviation 1.8 1.4 1.7 1.7

Pedicel length (mm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=1.6) 17.2 14.1 16.7 17.9
std. deviation 2.5 2.1 2.2 2.1

Plant height at maturity (cm)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=12) 129 146 125 129
std. deviation 6.7 6.5 5.8 8.1

Erucic Acid (% of total fatty acids)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean 38.9 0.35 0.48 0.03

Oil content of seed (%in whole dried seed)

  'PPS08-169 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=4.0) 50.9 45.4 46.0 48.9

Click on image for larger view
PPS08-169 A-Line
Rapeseed: 'PPS08-169 A-Line' (far left) with reference varieties 'PPS01-140 A-Line' (centre left), 'PPS02-144 A-Line' (centre right) and '5020' (far right)

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