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St-Laurent d'Orleans

Strawberry

Denomination: 'St-Laurent d'Orleans'
Botanical Name: Fragaria × ananassa
Applicant/Holder: Agriculture & Agri-Food Canada, Saint-Jean-sur-Richelieu
Horticulture Research & Development Centre
430, boulevard Gouin, P.O. Box 457
Saint-Jean-sur-Richelieu, Quebec
J3B 3E6
Canada
Breeder: Shahrokh Khanizadeh, Agriculture & Agri-Food Canada, Saint-Jean-sur-Richelieu, Quebec
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Canada
Tel: (306) 385-9316
Application Date: 2002-06-07
Application Number: 02-3113
Grant of Rights Date: 2003-09-17
Certificate Number: 1554
Grant of Rights Termination Date: 2021-09-17

Variety Description

Variety used for comparison: 'Kent'

Summary: The diameter of the calyx of 'St-Laurent d'Orléans' is slightly smaller than the corolla whereas it is the same size to larger than the corolla in 'Kent'. The fruit of 'St-Laurent d'Orléans' is large whereas it is medium-sized in 'Kent'. 'St-Laurent d'Orléans' matures approximately one week later than 'Kent'. 'St-Laurent d'Orléans' is moderately susceptible to susceptible to leaf spot (Mycosphaerella fragariae (Tul.) Lindau) whereas 'Kent' is highly susceptible. 'St-Laurent d'Orléans' is resistant to moderately resistant to leaf scorch (Diplocarpon earliana Ell. & Ev.) whereas 'Kent' is highly susceptible.

Description:

'St-Laurent d'Orléans' is a June-bearing strawberry variety with an early flowering date and mid-season harvest maturity. Plants are globose in growth habit with medium to dense plant density and medium to strong vigour. The leaves are medium green on the upper side with very weak to weak to medium blistering between the veins. There are three leaflets present with a cupped terminal leaflet which is slightly longer than it is broad. The base of the terminal leaflet is obtuse with acute to obtuse margin teeth. The pubescence on the petiole is medium to dense with the hairs positioned outwards. 'St-Laurent d'Orléans' produces a medium amount of stolons which are medium to thick.

'St-Laurent d'Orléans' has medium to large-sized flowers which are positioned beneath to level with the foliage. In relation to calyx diameter, the flower is slightly smaller than the corolla with the inner calyx being the same size as the outer calyx. The flower petals are free to touching with the petal length/width ratio being as long as broad to longer than broad.

The fruiting truss of 'St-Laurent d'Orléans' is semi-erect and medium in length. The large fruit is slightly longer than it is broad. The fruit is round to globose-conical in shape with no differences between the shape of the primary and secondary fruits. The band without achenes on the fruit is medium in width with very weak to medium unevenness of the fruit surface. The light red to red fruit of 'St-Laurent d'Orléans' is slightly uneven in colour with strong glossiness. The achenes are inserted below to level with the fruit surface. The calyx is level to set above the fruit and the calyx segments are flat. In relation to fruit diameter, the calyx is the same size as the fruit and adheres strongly to the fruit. The fruit flesh is firm and is slightly uneven to even medium red in colour. The fruit has medium sweetness and medium to strong acidity.

'St-Laurent d'Orléans' is moderately susceptible to susceptible to leaf spot (Mycosphaerella fragariae (Tul.) Lindau) and resistant to moderately resistant to leaf scorch (Diplocarpon earliana Ell. & Ev.).

Origin & Breeding History: 'St-Laurent d'Orléans' originated from a controlled cross between the varieties 'L'Acadie' and 'Joliette'. The cross took place in 1996 at the Horticultural Research and Development Centre of the Agriculture & Agri-Food Canada Research Station in St-Jean-sur-Richelieu, Quebec. 'St-Laurent d'Orléans' has been tested at L'Acadie since 1997. Selection criteria included shelf life, yield, fruit size and colour and disease resistance. 'St-Laurent d'Orléans' was tested under the experimental designation, 'FIO9624-11'.

Tests & Trials: Tests and trials for 'St-Laurent d'Orléans' were conducted in matted rows at the Agriculture & Agri-Food Canada experimental farm in L'Acadie, Quebec since 1997. A completely randomized design for four replicates (4 plots) was used to evaluate the selections. Each experimental unit was a 4-meter long plot, 50 cm wide. A representative 2 metre section of the plot was used for data collection. The remainder was used as guard row.

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