Denomination: 'ACS-C17'
Botanical Name: Brassica rapa
Applicant/Holder: Agriculture & Agri-Food Canada, Saskatoon
Saskatoon Research Centre
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Breeder: Kevin C. Falk, Agriculture & Agri-Food Canada, Saskatoon, Saskatchewan
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Tel: (403) 782-8126
Application Date: 2000-05-24
Application Number: 00-2288
Grant of Rights Date: 2003-11-06
Certificate Number: 1650
Date rights surrendered: 2013-11-06

Variety Description

Varieties used for comparison: 'AC Parkland' and 'Tobin'

Summary: The silique and beak of 'ACS-C17' are shorter than those of the reference varieties, 'AC Parkland' and 'Tobin'. The leaves of 'ACS-C17' are more lobed than they are in 'Tobin'. The plant height of 'ACS-C17' is taller than 'Tobin'.


'ACS-C17' is an open-pollinated spring Polish canola population. The cotyledons are narrow to medium in width. The leaves are light green with few to a medium number of leaf lobes. The leaf margins are rounded with shallow to medium depth dentation. The flowers of 'ACS-C17' are yellow. The silique is very short, the beak is long and the pedicel is short. Plants are short and seed colour is mixed yellow-brown. 'ACS-C17' has medium glucosinolate and low erucic acid levels. It is susceptible to Alternaria black spot (Alternaria brassicae and Alternaria raphani), moderately susceptible to Blackleg (Leptosphaeria maculans), highly susceptible to Sclerotinia stem rot (Sclerotinia sclerotiorum) and moderately resistant to white rust (Albugo candida).

Origin & Breeding History: Blackleg resistance present in Brassica juncea L. was introgressed into B. rapa L. through sexual crosses. Interspecific plants were backcrossed to 'Tobin' and selfed in the greenhouse. F2 plants were screened for blackleg resistance using both the cotyledon and stem inoculation methods. These plants were backcrossed to 'AC Parkland'. Approximately 100 of these F2 plants were interpollinated and harvested in the greenhouse and subsequently sown in the field. Ten of the most blackleg resistant plants were selected from the field and used to grow 200 plants. This process was repeated during the 1991, 1992, 1993 and 1994 growing seasons. In 1995, the C5 generation ('ACS-C17') was selected based on blackleg resistance, agronomic performance, oil and protein content and canola quality.

Tests & Trials: Tests and trials for 'ACS-C17' were conducted at the Elora Research Station, Elora, Ontario in the summers of 2000 and 2002. Trials consisted of 4 rows per plot, 2 replicates per entry with each replicate 1.5 metres wide by 5 metres long.

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