4PVHL21R

Canola

Variety Description

Varieties used for comparison: 'NS6569MC' and 'G00555MC'

Summary: ‘4PVHL21R' has a longer silique and beak than ‘G00555MC'. At maturity, the plants of ‘4PVHL21R' are shorter than the plants of ‘NS6569MC'.

Description:

PLANT: male fertile inbred line, open pollinated spring type, medium height at maturity

COTYLEDON: medium width

LEAF: medium green, very few to few lobes, rounded margin, shallow to medium depth of margin indentations, medium length, narrow to medium width, short petiole

FLOWER PETAL: yellow, not touching to touching petal spacing
ANTHER: pollen production present

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

Origin & Breeding History: ‘4PVHL21R' is a restorer inbred line developed by Pioneer Hi-Bred International, Inc. Using the double haploid method of plant breeding. The variety originated from a cross between two proprietary inbred lines conducted in 2013 in Caledon, Ontario, Canada. Both parental inbred lines carried the Ogura and Ogu-INRA cytoplasmic male sterility restorer genes in a homozygous state. The resulting F1 generation was subject to the double haploidization process with one double haploid line selected and designated as ‘4PVHL21R' in 2015 based on plant vigour, time of flowering and pod development, glucosinolate levels, saturated fats, and oil content. Breeder seed production commenced in 2019.

Tests & Trials: The comparative trials for ‘4PVHL21R' were conducted during the 2022 and 2023 growing seasons in Saskatoon, Saskatchewan. The trial included 3 replicates. The candidate and reference variety were sown side by side in the first replicate whereas varieties in the second and third replicate were completely randomized. The plots consisted of 2 rows that were 3 metres in length with spacing of 50 cm between rows. The planting density of 26 seeds per metre resulted in a total of 468 plants per variety per year. The measured characteristics were based on 30 measurements per variety per year except for silique characteristics which were based on 60 measurements per variety per year. Mean differences were significant at the 2% probability level based on LSD values.

Comparison tables for '4PVHL21R' with reference varieties 'NS6569MC' and 'G00555MC'

Silique length (mm)

Beak length (mm)

Plant height (at maturity) (cm)

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Canola: ‘4PVHL21R' (left) with reference variety ‘NS6569MC' (right)

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Canola: Reference variety ‘G00555MC' (left)