Details for: PI 553276, Rubus hybr., 'Merton Thornless'


Summary Data
Taxonomy:
Rubus hybr.
Cultivar:
'Merton Thornless'
Origin:
Developed – England, United Kingdom
Received by NPGS:
05 Nov 1982
Improvement Status:
Cultivar
Form Received:
Plant
Life Form:
Perennial
Life Cycle:
Perennial
Availability
This accession is not available. Contact site for status.
Request are accepted July 1st - Sept. 30th; Ships in Nov.

  
There are no images for this accession.

Core Passport Data
Taxonomy:
Rubus hybr.
Cultivar:
'Merton Thornless'
Origin:
Developed – England, United Kingdom
Received by NPGS:
05 Nov 1982
Improvement Status:
Cultivar
Form Received:
Plant
Life Form:
Perennial
Life Cycle:
Perennial
Source History
Developed
1936.
England, United Kingdom
Comment: Introduced in England in 1936, in US in 1944
Developer(s):
Donated
05 November 1982.
Oregon, United States
Comment: Received from F. J. Lawrence collection to NCGR-Corvallis
Donor(s):
Accession Group(s)
Group name: Rubus: blackberries
Note: bramble cultivars fruit with solid center
To search for accessions in this group, click the following link. Rubus: blackberries

Group name: Rubus: heirloom
Note: heritage ccultivars
To search for accessions in this group, click the following link. Rubus: heirloom

Group name: Rubus: thornless
Note: 
To search for accessions in this group, click the following link. Rubus: thornless

Accession Names and Identifiers
'Merton Thornless'
Type: Cultivar name
Group: BLACKBERRY

Plant Patent 571
Type: Other or unclassified name
Group: PLNT
Accessions protected by U.S. Plant Patents

CRUB 254
Type: Site identifier
Group: LOCAL
Corvallis local number

Narrative
Orig. in Merton Park, London, England, by M.B. Crane, John Innes Inst. Introd. in England in 1936, introd. in the U.S. in 1944. Plant patent 571; 9 Mar. 1943; assigned to Armstrong Nurseries, Ontario, Calif. John Innes (Rubus ulmifolius inermis x R. thyrsiger) x a thornless selfed John Innes seedling. Fruit: large; round; drupelets large; long-mIdseason ripening. Bush: thornless; vigorous grower; crop production in U.S. has not been very high; tetraploid. Useful in breeding thornless plants. No longer propagated for its fruit. Mainly used as a source of thornlessness in breeding. BandO

cultivar release by M.B. Crane, John Innes Institute Introduced in England in 1936, introduced in the U.S. in 1944

NAMED FOR= Merton Park, London
Rubus hybr.
Genus:
Rubus
Family:
Rosaceae
Subfamily:
Rosoideae
Tribe:
Rubeae
Nomen number:

104971
Comment:
interim designation used in GRIN for Rubus hybrids which lack an acceptable binomial
Verified:
04/11/1988 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Heterotypic Synonym(s)
Rubus ×proteus C. H. Stirt. ex L. Hend., nom. inval.

Common names
LanguageNameAlternate namenoteseqCitation
EnglishMarionberry  1Facciola, S. 1998. Cornucopia II: a source book of edible plants Note: Kampong Publications
EnglishOlallieberry  1Facciola, S. 1998. Cornucopia II: a source book of edible plants Note: Kampong Publications
Englishyoungberry  1Facciola, S. 1998. Cornucopia II: a source book of edible plants Note: Kampong Publications
Annotations
Other Links
Actions
Pathogens
Bioassay
  • R. occidentalis 'Munger' sdlgs. NEGATIVE Inventory: CRUB 254 .001 PL
  • Malling Landmark red raspberry. NEGATIVE Inventory: CRUB 254 .001 PL
Elisa test
  • Tomato ringspot nepovirus. NEGATIVE 13 Mar 2015. plate 2015-06 Inventory: CRUB 254 .001 PL
  • Tobacco Ringspot Nepovirus. NEGATIVE 13 Mar 2015. plate 2015-06 Inventory: CRUB 254 .001 PL
  • Raspberry bushy dwarf virus. NEGATIVE 13 Mar 2015. plate 2015-06 Inventory: CRUB 254 .001 PL
  • Apple Mosaic Ilarvirus. NEGATIVE 13 Mar 2015. plate 2015-06 Inventory: CRUB 254 .001 PL
Herbaceous tests
  • Chenopodium quinoa. NEGATIVE Inventory: CRUB 254 .001 PL
PCR test
  • Raspberry Latent Virus. NEGATIVE Aug 2020. Inventory: CRUB 254 .001 PL
  • Xylella. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Tobacco Ringspot Virus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Tomato ringspot nepovirus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Rubus Yellow Net Virus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Raspberry ringspot virus. NEGATIVE Aug 2020. Inventory: CRUB 254 .001 PL
  • Raspberry Leaf Blotch Virus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Raspberry bushy dwarf virus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Phytoplasma. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Cherry Rasp Leaf Virus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Cherry leafroll Nepovirus. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Blackberry Virus Y. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Blackberry Virus X. NEGATIVE Aug 2020. Testing by Pairwise Plants, NC Inventory: CRUB 254 .001 PL
  • Blackberry Leaf Mottle Associated Virus. NEGATIVE Aug 2020. Inventory: CRUB 254 .001 PL
  • Blackberry Chlorotic Ringspot Virus. NEGATIVE Aug 2020. Inventory: CRUB 254 .001 PL
Vouchers
Citations
Pedigree
Date released:
1936
Description:
John Innes (Rubus ulmifolius inermis x R. thyrsiger) x a thornless selfed John Innes seedling It is a thornless selection of an F2 of John Innes
Intellectual Property Rights
U.S. Plant patent. 571, Issued: 09 Mar 1943.
U.S. Plant patent. Plant Patent 571, 46.Brambles. Issued: 09 Mar 1943.

Observations

Phenotype Data

CategoryDescriptorDescriptionValueSample SizeStudyInventoryAvailability
CYTOLOGICCHROMOCOUNTCHROMOCOUNT28 RUBUS.Thompson.ChromosomeCount.1995CRUB 254 .001 PLNot Available
CYTOLOGICPloidy EquationEquation of the ploidy of the plant. Example 2n = 2x = YY2n = 4x = 28 RUBUS.Thompson.ChromosomeCount.1995CRUB 254 .001 PLNot Available
GENSTOCKRUBUS CORE SUBSETA flag to indicate the accession is part of the core subset  RUBUS.CORE.1998 Not Available
GROWTHVIGORPLANT VIGOR, LITTLE TO VERY5 - (1 = LITTLE, 9 = VERY) RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYTHORNINESSTHORNINESS, NONE TO EXTREME1 - NONE RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYDRUPLETSDRUPELETS PER FRUIT7 - (1 = FEW, 9 = MANY) RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYFIRMNESSFRUIT FIRMNESS7 - (1 = SOFT, 9 = FIRM) RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYSEED_SIZESEED SIZE, SMALL TO LARGE5 - (1 = SMALL, 9 = LARGE) RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYFRUIT_SIZEFRUIT SIZE (GRAMS / FRUIT)4.2 RUBUS.CORVALLIS.1987 Not Available
MORPHOLOGYFRUIT_COLORFRUIT COLORB - BLACK RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYLEAFLET NUMBERNUMBER OF LEAFLETS PER LEAF3 RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYCANE WAXINESSCANE WAXINESS, CODED 1-9.1 - LITTLE WAXINESS RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYSPINE DENSITY LOWSPINE DENSITY ON THE LOWER PART OF THE CANE.1 - FEW SPINES RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYSPINE DENSITY MIDSPINE DENSITY ON THE MID PART OF THE CANE1 - FEW SPINES RUBUS.CORVALLIS.STD.1994 Not Available
MORPHOLOGYSPINE DENSITY HIGHSPINE DENSITY ON THE HIGH PART OF THE CANE.1 - FEW SPINES RUBUS.CORVALLIS.STD.1994 Not Available
PHENOLOGYBLOOM1JULIAN DATE OF FIRST BLOOM121 RUBUS.CORVALLIS.1987 Not Available
PHENOLOGYBLOOM1JULIAN DATE OF FIRST BLOOM162 RUBUS.CORVALLIS.1986 Not Available
PHENOLOGYBLOOM2JULIAN DATE OF LAST BLOOM199 RUBUS.CORVALLIS.1987 Not Available
PHENOLOGYRIPE1JULIAN DATE OF FIRST RIPE BLOOM213 RUBUS.CORVALLIS.1987 Not Available
PHENOLOGYRIPE2JULIAN DATE OF LAST RIPE FRUIT240 RUBUS.CORVALLIS.1987 Not Available
PRODUCTIONPROPAGATIONPropagation by tip layering or rooted cuttingstip RUBUS.PROPAGATION.2017CRUB 254 .001 PLNot Available
PRODUCTIONTYPECROP TYPEB - BLACKBERRY RUBUS.CORVALLIS.STD.1994 Not Available
PRODUCTIONFLAVORFRUIT FLAVOR, POOR TO EXCELLENT3 - (1 = POOR, 9 = EXCELLENT) RUBUS.CORVALLIS.STD.1994 Not Available
PRODUCTIONHARVEST_EASEHARVEST EASE, DIFFICULT TO EASY1 - DIFFICULT TO REMOVE RUBUS.CORVALLIS.STD.1994 Not Available