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Indigo Pear Drops


Denomination: 'Indigo Pear Drops'
Botanical Name: Solanum lycopersicum
Applicant/Holder: Oregon State University
Office of Commercialization and Corporate Development
312 Kerr Administration Building
Corvallis, Oregon
United States of America
Breeder: Berry Treat, Oregon State University, Corvallis, United States of America
Agent in Canada: Global Agri Services Inc.
376 New Maryland Highway
New Maryland, New Brunswick
E3C 1E5
Tel: 506-462-9493
Application Date: 2015-01-22
Provisional Protection:: 2015-04-28
Application Number: 15-8629
Grant of Rights Date: 2017-11-28
Certificate Number: 5587
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2019-11-28
Grant of Rights Termination Date: 2037-11-28

Variety Description

Variety used for comparison: 'Indigo Rose'

Summary: The plants of 'Indigo Pear Drops' flower early to mid-season whereas the plants of 'Indigo Rose' flower late in the season. The internode length on the stem of 'Indigo Pear Drops' is longer than that of 'Indigo Rose'. The upper side of the leaf blade of 'Indigo Pear Drops' is medium green with weak glossiness while that of 'Indigo Rose' is dark green with medium glossiness. The style of the flower of 'Indigo Pear Drops' has pubescence whereas the style of 'Indigo Rose' has no pubescence. The fruit of 'Indigo Pear Drops' is small and pear shaped with a large length/diameter ratio whereas the fruit of 'Indigo Rose' is small to medium sized and circular with a very small length/diameter ratio. The peduncle end of 'Indigo Pear Drops' has absent or very weak ribbing whereas that of 'Indigo Rose' has weak ribbing. The peduncle scar of 'Indigo Pear Drops' is very small whereas that of 'Indigo Rose' is small to medium sized. The mature fruit of 'Indigo Pear Drops' has black and yellow skin whereas that of 'Indigo Rose' has black and red skin. The flesh of the fruit of 'Indigo Pear Drops' is yellow whereas it is red for 'Indigo Rose'. The epidermis of the fruit of 'Indigo Pear Drops' is yellow whereas it is colourless for 'Indigo Rose'.


SEEDLING: no anthocyanin colouration of hypocotyls
PLANT: indeterminate growth habit, weak intensity of anthocyanin colouration on upper third of stem, flowers early to mid-season, mid-season fruit maturity

LEAF: horizontal to semi-drooping attitude, bipinnate division of blade, medium green on upper side, weak glossiness on upper side, weak blistering, small sized blisters
LEAFLET: large to very large from middle of leaf, semi-erect to horizontal attitude of petiolule in relation to main axis of leaf

INFLORESCENCE: mainly uniparous type
FLORET: no fasciation of first floret of inflorescence, pubescence of style present, yellow
PEDUNCLE: abscission layer present, medium to long

IMMATURE FRUIT: no green shoulder, no green stripes, no green colour on skin
MATURE FRUIT: small size, large length/diameter ratio, pear shaped in longitudinal section, absent or very weak ribbing at peduncle end, round in cross-section, absent or very weak to weak depression at peduncle end, very small sized peduncle scar, very small blossom scar, indented to flat at blossom end, small mid-point of core (in cross-section) in relation to total diameter when viewed from above, medium thickness of pericarp, only two locules, black and yellow skin colour at maturity, weak to medium glossiness of skin, yellow flesh, yellow epidermis, firm, medium shelf-life

Origin & Breeding History: 'Indigo Pear Drops' (experimental designations 'P183' and 'S285') originated from a cross conducted at Oregon State University in Corvallis, Oregon, USA. The cross was made in 2005 between the female parent variety 'Yellow Cherry', and the male parent variety 'P20-7' which resulted from a four-way controlled cross using accessions containing wild species germplasm. The resulting progeny was designated as 'P183' and advanced by pedigree selection from the F2 generation to the F7 generation. In 2012, approximately ten F8 single plants were massed and designated 'S285' and then advanced to the F10 generation as of 2014. Selection was based on intense purple colour, excellent flavour, plant vigour, freedom from disease, reduced fruit cracking and sunburn, good productivity and uniform fruit size.

Tests & Trials: The comparative trials for 'Indigo Pear Drops' were conducted during the 2015 and 2016 growing seasons in New Maryland, New Brunswick. In each year of test, the seeds were started indoors, transplanted into 10 cm pots, grown on in the greenhouse and planted outdoors in early June. Each plot consisted of 20 plants each of the candidate and reference variety grown in a single row. Plants were spaced 0.60 metres apart within the row and spaced 0.75 metres between rows.

Comparison table for 'Indigo Pear Drops' with reference variety 'Indigo Rose'

Stem internode length between 1st and 4th inflorescences (cm)

  'Indigo Pear Drops' 'Indigo Rose'
mean 9.5 7.6
std. deviation 1.29 0.79

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Indigo Pear Drops
Tomato: 'Indigo Pear Drops' (left) with reference variety 'Indigo Rose' (right)

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Indigo Pear Drops
Tomato: 'Indigo Pear Drops' (left) with reference variety 'Indigo Rose' (right)

Click on image for larger view
Indigo Pear Drops
Tomato: 'Indigo Pear Drops' (left) with reference variety 'Indigo Rose' (right)

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