PPS08-168 A-Line

Canola

Denomination: 'PPS08-168 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: 09-6697
Protective direction granted: 2009-07-21
Grant of Rights Date: 2011-02-22
Certificate Number: 4010
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2013-02-22
Grant of Rights Termination Date: 2029-02-22

Variety Description

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

Summary: 'PPS08-168 A-Line' has a medium green leaf colour while it is light green in 'PPS02-144 A-Line'. The leaf petiole of 'PPS08-168 A-Line' is shorter than that of '5020'. 'PPS08-168 A-Line' flowers later than 'PPS02-144 A-Line' and '5020'. The flower petal of 'PPS08-168 A-Line' is shorter and narrower than that of '5020'. 'PPS08-168 A-Line' has a shorter silique that that of '5020' but longer than that of 'PPS01-140 A-Line'. The beak of 'PPS08-168 A-Line' is longer than that of 'PPS01-140 A-Line' but shorter than that of 'PPS02-144 A-Line' and '5020'. 'PPS08-168 A-Line' has a shorter pedicel than that of '5020'. The plant height of 'PPS08-168 A-Line' at maturity is taller than that of 'PPS02-144 A-Line' and '5020'. 'PPS08-168 A-Line' matures later than '5020'. The seed of 'PPS08-168 A-Line' has lower protein levels that that of 'PPS02-144 A-Line'.

Description:

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

COTYLEDON: medium to wide, medium length

LEAF: medium green, few to medium number of lobes, rounded margin, low density of shallow dentations, short to medium length, medium width, short to medium length petiole

FLOWER PETALS: yellow, short, medium to wide

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

SEED: black

AGRONOMIC CHARACTERISTICS: fair resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 0.26% of total fatty acids, oil content is 48.9% of whole dried seed, protein is 25.8% of dried oil free meal, medium glucosinolates (18.5 µmol/g)

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

Origin & Breeding History: 'PPS08-168 A-line' is a male sterile inbred line used in F1 hybrid production, that contains the Ms8 gene construct in heterozygous state. 'PPS08-168 A-line' is a doubled haploid line that was produced in Canada in 2003. 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 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 'PPS08-168 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.

Petiole length (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=17) 93 92 81 112
std. deviation 16.0 12.6 13.1 14.9

Days to flowering

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2.4) 47.5 47.0 43.0 42.0

Flower petal length (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=1.2) 11.9 10.7 13.0 17.1
std. deviation 0.9 0.8 0.8 0.8

Flower petal width (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=0.91) 6.6 5.8 6.9 7.8
std. deviation 0.6 0.8 0.6 0.6

Silique length (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2) 59.7 56.5 62.2 65.4
std. deviation 5.6 5.4 9.0 5.0

Beak length (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=0.6) 12.3 7.5 14.3 14.6
std. deviation 1.6 1.4 1.7 1.7

Pedicel length (mm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=1.6) 15.9 14.1 16.7 17.9
std. deviation 2.2 2.1 2.2 2.1

Days to maturity

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=5) 107 105 108 97.5

Plant height at maturity (cm)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=12) 144 146 125 129
std. deviation 7.4 6.5 5.8 8.1

Protein content of seed (% of dried oil free meal)

  'PPS08-168 A-Line' 'PPS01-140 A-Line' 'PPS02-144 A-Line' '5020'
mean (LSD=2.6) 25.8 26.9 28.8 24.6

Click on image for larger view
PPS08-168 A-Line
Canola: 'PPS08-168 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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