Meridian
| Denomination: | 'Meridian' |
|---|---|
| Botanical Name: | Lactuca sativa |
| Applicant/Holder: |
Sakata Seed America, Inc. 18095 Serene Drive Morgan Hill, California 95037 United States of America |
| Breeder: |
Vanguard Seed, Inc., Salinas, United States of America |
| Agent in Canada: |
BioFlora Inc. 38723 Fingal Line R.R. #1 St. Thomas, Ontario N5P 3S5 Canada Tel: 519-317-7511 |
| Application Date: | 2021-06-22 |
| Provisional Protection: | 2021-06-22 |
| Application Number: | 21-10585 |
Variety Description
Description:
PLANT: iceberg type, in the open culture type, growing seasons are spring and summer, very large diameter, strong degree of overlapping of upper part of leaves, mid-season harvest maturity, begins bolting very late, medium axillary sprouting, weak fasciation on bolting stem
HEAD: medium to large, circular in cross-section, very dense
LEAF: semi-erect attitude, absent or very few divisions, narrow oblate shape, rounded apex, convex in longitudinal section, absent or very weak intensity of anthocyanin colouration, medium green, medium to strong glossiness of upper side, thin to medium thickness, weak blistering, medium sized blisters, flabellate venation
LEAF MARGIN: medium undulation, bidentate type incisions, shallow depth incisions, shallow depth secondary incisions, medium density of incisions
SEED: white
DISEASE REACTIONS: resistance to Bremia lactucae isolates Bl: 16EU, Bl: 20EU, Bl:21EU, Bl: 27EU, Bl: 30EU, and Bl: 31EU present; resistance to Bremia lactucae isolates Bl: 26EU, Bl: 29EU, Bl: 33EU, Bl: 35EU, Lettuce mosaic virus pathotype II absent
INSECT REACTION: resistance to currant-lettuce aphid (Nasonovia ribisnigri) biotype Nr: 0 absent
Origin & Breeding History: 'Meridian' originated from a cross conducted between the female parent variety ‘Diamond Back' and the male parent, a proprietary breeding line ‘BCD108-3' in Corcoran, California in July 2012. Resulting seed was collected and sown in the San Joaquin Valley, California. Selections were made at each generation from 2012 to 2013. The final selection of ‘Meridian' was made in the San Joaquin Valley, California in August of 2014 based on Fusarium, tip burn and bolting tolerance as well as uniform characteristics.
Tests & Trials: The detailed description of ‘Meridian' is based on the UPOV report of Technical Examination, application number 20211619, purchased from the Community Plant Variety Office in Angers, France. The trial was conducted by the Variety and Seed Study and Control Group (GEVES) in Brion and Cavaillon, France in 2022.
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Lettuce: 'Meridian'
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Lettuce: 'Meridian'
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Lettuce: 'Meridian'
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