PPS03-149 A-line

Canola

Variety Description

Varieties used for comparison: 'PPS03-149 B-Line', '2733', 'Sprint', 'Westar' and 'Excel'

Summary: 'PPS03-149 A-Line' has a narrower flower petal than the reference varieties. The pedicel of 'PPS03-149 A-Line' is shorter than the reference varieties. 'PPS03-149 A-Line' has a taller plant height at maturity than 'Sprint'. The oil content, as a percentage of the whole dried seed of 'PPS03-149 A-Line' is lower than in 'PPS03-149 B-Line' '2733', and 'Westar'. 'PPS03-149 A-Line' is resistant to glufosinate ammonium herbicides while 'PPS03-149 B-Line', 'Sprint', 'Westar and 'Excel' are not. The blackleg resistance in 'PPS03-149 A-Line' is better than in 'Sprint', 'Westar' and 'Excel'.

Description:

PLANT: male sterile inbred, glufosinate ammonium resistant, spring seasonal type, medium height at maturity

COTYLEDON: medium to wide, medium to long

LEAF: light green, very few number of lobes, rounded type margin, low to medium density of shallow dentations, medium length and width, medium length petiole

FLOWERS: yellow, petals short to medium in length, narrow to medium

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

SEED: black

AGRONOMIC CHARACTERISTICS: fair to good resistance to lodging

QUALITY CHARACTERISTICS: erucic acid 0.20% of total fatty acids, oil content 45.9% of whole dried seed, protein 27.6% of dried oil free meal, low glucosinolates less than 20 µmol/g

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

Origin & Breeding History: 'PPS03-149 A-Line' is a male sterile line which contains the Ms8 gene construct in heterozygous state. It was derived by backcrossing a doubled haploid line 98-55-256 to the male sterile line used as the source of the Ms8 gene. Doubled haploid line 98-55-256 which was produced in 1998, was extracted from the F1 generation derived from the cross 97CGH406 / 97CGH409 which was made in Canada in 1997. 'PPS03-149 A-Line' was selected in 2001 on the basis of male sterility stability, expression of tolerance to glufosinate ammonium herbicides and good combining ability with numerous restorer lines. Other selection criteria included, height, vigour, maturity, blackleg resistance, oil content, fatty acid profile, and glucosinolates content.

Tests & Trials: Test and trials were conducted in Saskatoon, Saskatchewan during the summers of 2004 and 2005. Plots consisted of 3 rows that were spaced 50 cm apart with a row length of 6 meters. There were two replicates arranged in a RCB design.

Comparison tables for 'PPS03-149 A-line' with reference varieties 'PPS03-149 B-Line', '2733', 'Sprint', 'Westar' and 'Excel'

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

Flower petal width (mm)

Pedicel length (mm)

Plant height at maturity (cm)

Oil content (% of whole dried seed)

Glucosinolates (µmol/g)

Click on image for larger view

Canola: 'PPS03-149 A-line' (left) and 'PPS03-149 B-line' (second from left) with reference varieties '2733' (center left), 'Sprint' (center right), 'Westar' (second from right) and 'Excel' (right)