Redbat 8


Denomination: 'Redbat 8'
Previously Proposed Denomination: '2710-1'
Botanical Name: Pisum sativum
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Breeder: Tom Warkentin, University of Saskatchewan, Saskatoon, Saskatchewan
Application Date: 2014-06-02
Application Number: 14-8349
Grant of Rights Date: 2017-05-10
Certificate Number: 5479
Grant of Rights Termination Date: 2037-05-10

Variety Description

Varieties used for comparison: 'Redbat 88' and 'CDC Meadow'

Summary: The number of nodes, up to and including the first fertile node, on the stem of 'Redbat 8' is few to medium whereas it is medium to many for 'Redbat 88'. 'Redbat 8' flowers mid-season whereas 'Redbat 88' is late flowering. The pods of 'Redbat 8' are shorter than those of 'Redbat 88'. The stem length of 'Redbat 8' is shorter than that of 'Redbat 88'. The cotyledons of 'Redbat 8' are orange whereas those of 'Meadow' are yellow. The 100 seed weight of 'Redbat 8' is less than that of 'Redbat 88'.


PLANT: field type, no anthocyanin colouration, no stem fasciation, green at flowering, no leaflets, mid to late maturing

STEM: no anthocyanin colouration of axil, few to medium number of nodes up to and including first fertile node

STIPULE: medium to long from axil to tip, absent or very short lobe below axil, very sparse density of flecking

FLOWER: blooms mid-season, two flowers per node
STANDARD: white, level base, absent or very weak undulation

POD: parchment entire, thickened wall absent, blunt distal part, weak curvature, medium green when fully swollen, suture strings present
IMMATURE SEED: light green
DRY SEED: ellipsoid shape, simple starch grain, orange cotyledon, hilum same colour as testa

Origin & Breeding History: 'Redbat 8' (experimental designation 2710-1) was developed from the cross '8510' / 'CDC Dundurn' // 'CDC Bronco' carried out in 2004 at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. In 2005, a single plant was selected from the F2 population for orange cotyledon colour. Yield, days to maturity, days to flower, vine length, resistance to lodging and seed weight were evaluated in F3 and subsequent generations.

Tests & Trials: Tests and trials for 'Redbat 8' were conducted at the Sutherland Field Site of the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan during the 2014 and 2015 growing seasons. The trials were conducted using a complete randomized block design consisting of 2 replications per variety. Each replicate consisted of 3 rows spaced 30 cm apart, with a row length of 3.66 metres and a planting density of 65 seeds per square metre. Measured characteristics were based on 20 measurements per variety per year. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for 'Redbat 8' with reference varieties 'Redbat 88' and 'CDC Meadow'

Pod length (cm)

  'Redbat 8' 'Redbat 88' 'CDC Meadow'
mean 2014 6.6 7.3 6.6
std. deviation 2014 0.4 0.5 0.6
mean 2015 6.3 6.8 6.2
std. deviation 2015 0.6 0.4 0.6

Stem length (cm)

  'Redbat 8' 'Redbat 88' 'CDC Meadow'
mean 2014 76.5 84.7 77.6
std. deviation 2014 6.3 3.6 7.6
mean 2015 65.5 75.6 67.2
std. deviation 2015 4.9 4.9 7.1

Seed weight (grams/100 seeds)

  'Redbat 8' 'Redbat 88' 'CDC Meadow'
mean 2014 18.7 20.8 19.8
std. deviation 2014 0.2 1.0 0.0
mean 2015 20.2 22.6 21.6
std. deviation 2015 0.4 1.0 0.3

Click on image for larger view
Redbat 8
Pea: 'Redbat 8' (centre) with reference varieties 'Redbat 88' (left) and 'CDC Meadow' (right)

Click on image for larger view
Redbat 8
Pea: 'Redbat 8' (centre) with reference varieties 'Redbat 88' (left) and 'CDC Meadow' (right)

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