SV1893GH

Bean

Variety Description

Variety used for comparison: 'Avanti'

Summary: The guides of 'SV1893GH' are short whereas the guides of 'Avanti' are long. The attitude of the branches is intermediate between semi-erect and semi-prostrate for 'SV1893GH' whereas the attitude is semi-erect for 'Avanti'. The intensity of green colour of the upper side of the leaf is light for 'SV1893GH' whereas the intensity is medium for 'Avanti'. The terminal leaflet of 'SV1893GH' is large whereas the terminal leaflet of 'Avanti' is of medium size. The intensity of the ground colour of the pod of 'SV1893GH' is medium whereas the intensity is strong for 'Avanti'. The degree of curvature of the beak of the pod is weak for 'SV1893GH' whereas the curvature of the beak is medium for 'Avanti'. The pod of 'SV1893GH' has secondary colour whereas the pod of 'Avanti' has no secondary colour. The time of flowering of 'SV1893GH' is late whereas the time of flowering of 'Avanti' is mid-season.

Description:

HYPOCOTYL: absent or very weak intensity of anthocyanin colouration

PLANT: dwarf type, determinate growth type, short guides, attitude of branches is intermediate between semi-erect and semi-prostrate

LEAF: light green upper side, weak rugosity
TERMINAL LEAFLET: large, circular to quadrangular shape, long tip

FLOWERING: begins late
INFLORESCENCE: positioned predominantly in foliage at full flowering
FLOWER: small bracts, white standard, white wing

POD: elliptic shape in cross-section through seed, small ratio of thickness to width, yellow ground colour of medium intensity, secondary colour distributed sparsely as violet flecks, stringiness of ventral suture present, absent or very weak curvature in concave shape, distal part is truncate in shape with beak excluded, weak curvature of beak, moderately rough surface, absent or very weak constrictions at dry stage
SEED: navy type, very low weight, circular to elliptic shape in longitudinal section, broad elliptic shape in cross-section, short, broad in cross-section
SEED COAT: white

DISEASE RESISTANCE: type 2 resistance to Bean Common Mosaic Virus (BCMV) where resistance to mosaic development is absent and resistance to black root development is present; resistant to Rust race 53

Origin & Breeding History: 'SV1893GH' (experimental designations 'NAVC6V1200' and '12-NAV-1200') is a dry, edible bean in the navy bean market class, developed by pedigree breeding selection. It originated from a hand pollinated cross conducted in the spring of 2003 between the variety 'Regent' and the breeding line 'RWR2381'. The breeding work was conducted under the direction of Kenneth Kmiecik at the Seminis Vegetable Seed, Inc. breeding stations located in Filer, Idaho, and De Forest, Wisconsin, USA. From 2004 to 2006, plant type and visual yield were used as selection criteria for selection from the generations F2 to F6. Additionally in 2004, selection for resistance to Aphanomyces was conducted on the F3 generation. From 2007 to 2009, plant type and yield were used as selection criteria for selecting from the F6 generation. Additionally in 2009, selection for resistance to Bean Common Mosaic Virus (BCMV) and rust was conducted on the F6 generation. During the summer of 2010, a foundation seed crop was planted in an open field in Filer, Idaho, to assess yield. 200 single plants were harvested, bulked and subjected to yield trials in Filer, Idaho; De Forest, Wisconsin; Grand Marsh, Wisconsin; and Red River Valley, North Dakota and Manitoba. During the summer of 2011, foundation seed was planted as progeny rows in an open field in Filer, Idaho, and inspected for off-types and uniformity. Any suspect rows were removed. Seed from these progeny rows was then bulked and given the commercial name 'SV1893GH'.

Tests & Trials: The comparative trials for 'SV1893GH' were conducted during 2016 and 2017 at the University of Guelph, Ridgetown Campus in Ridgetown, Ontario. A four replicate, randomised complete block design was planted with each replicate consisting of one row per variety. Each row was 3 metres long and spacing between rows was 0.75 metres. The plants were spaced 0.075 metres within the rows. The number of plants per variety was 80 X 4 replicates.

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Bean: 'SV1893GH'

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Bean: Reference variety 'Avanti'