This section details the Plant Accessions from your chosen Collection (Watkins Stabilised Collection of Tetraploid and Hexaploid Landrace Wheats) that are maintained by the GRU.

Collection Details:

This entire collection of 1418 lines is made up of 1063 Hexaploid (Triticum aestivum – Sub collection Watkins Derived Hexaploid) and 356 Tetraploid (Triticum durum – sub collection Watkins Derived Tetraploid) landraces. All lines have undergone genetic stabilisation in the form of Single Seed Descent (SSD) development. Any notable differences (phenotypic and genotypic) within hexaploid genotypes have resulted in sub accessions being generated from the original noted by prefix 1-4. 

Initial genetic hexaploid characterisation is published (Wingen et al, 2014, doi: 1007/s00122-01402344-5) with 41 SSR markers. Further 35k genotyping is also published for 804 hexaploid accessions (Wingfield et al, 2017, doi: 10.1111/pbi. 12757). Genotyping data is available from CerealsDB. http://www.cerealsdb.uk.net/cerealgenomics.

A core set of 119 Hexaploid lines have been defined (Wingen et al 2014, available on SeedStor as a Compiled Accession List) which captures a sizeable amount of the total diversity available across the entire set. A set of 90 of these lines have been used to create the Nested Association Mapping (NAM) collections using elite common parent Paragon. Further details of which can found at http://wisplandracepillar.jic.ac.uk/results_resources and seed of this can be ordered from the DFW NAM panel in SeedStor 

The tetraploid collection was genotyped using 35K Axiom® array (data available upon request jic.geneticresources@jic.ac.uk). A core set of 50 tetraploid lines (available on SeedStor as a Compiled Accession List) was generated using Core Hunter 3 (https://doi.org/10.1186/s12859-018-2209-z). The development of biparental mapping populations is under construction.

Seed is generated and supplied as a precise genetic stock from hand harvested bagged ears of glasshouse grown plants or as field grown, machine combined stocks.

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