| GROWTH | Plant Height, final | Plant height of a typical plant in centimeters from the ground to tip at maturity. | 98 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Node Number | Number of nodes on the main stem that have pods. | 20 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Flower Color | Flower color | P - Pigmented | | PEA.IMAGE.2011.SPILLMAN | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Flowers per Peduncle | Maximum number of flowers per peduncle. | 1 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Pod Length | Average length of pods from first reproductive node of five different plants at full pod stage recorded in centimeters. Expressed to one decimal place. | 5.7 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Pod Width | Average width of pods from first reproductive node of five different largest pods (each from a different plant) measured at full pod stage recorded in centimeters. Expressed to one decimal place. | 0.9 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Pod Color | Pod color, taken at first reproductive node at full pod stage. | G - Green | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Pod Shape | Pod shape measured at flat pod stage. | S - Straight | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Pod Apex | Pod apex measured at flat pod stage. | B - Blunt | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Seeds per Pod | Fully develops on first reproductive node. Average number of seeds from five longest pods, each from five different plants. Expressed to one decimal place. | 5 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Leaflet Morphology | Leaflet morphology | N - Normal | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Stipules | Stipules | N - Normal | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Stem Fasciation | Stem fasciation | N - No | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| MORPHOLOGY | Seed weight 100 | Weight of 100 seeds in grams. | 7 | | PEA.SEEDWEIGHT.WRPIS | W6 20026 2012psp SD | Not Available |
| MORPHOLOGY | Stem basal branching | Number of basal branches at lower nodes of mature plant | 5 | | PEA.2010.GREENHOUSE.PSP | W6 20026 2009psp SD | Not Available |
| OTHER | Image/picture1 | A picture or image | flower | | PEA.IMAGE.2012.CFERRY.PSP | W6 20026 2009psp SD | Not Available |
| OTHER | Image/picture1 | A picture or image | tendril | | PEA.IMAGE.2012.CFERRY.PSP | W6 20026 2009psp SD | Not Available |
| SUBSET | Pea single plant | Accessions was developed by selecting seed from a single plant | Y - Yes, The accessions came from a single plant | | PEA.SINGLE.PLANT | W6 20026 2009psp SD | Not Available |
| SUBSET | Pisum Genetic Data | Accessions with Genetic Data | SNP.GENOTYPING.2015 | | An Excel file with the markers and genotypes">PEA.SNP.GENOTYPING.2015 | | Not Available |
| SUBSET | Pisum Genetic Data | Accessions with Genetic Data | SNP.PSP.PLUS.COLLECTION.2017 | | A ZIP'ed TEXT file with the markers and data (7.3 Mb in size)
A ZIP'ed TEXT file with the markers and data in VCF file suffix (28 Mb in size)
Abstract:
Globally, pea (Pisum sativum L.) is an important temperate legume crop for food, feed, and fodder, and many breeding programs exist to develop cultivars adapted to these end uses. In order to manage and utilize genetic resources for pea improvement, the USDA Pea Single Plant Plus Collection (PSPPC), which contains 431 Pisum accessions with morphological, geographic, and taxonomic diversity, was assembled. To maximize the value of this collection for trait mapping and genomics-assisted breeding projects, detailed genetic characterization was performed. To that end, genotyping-by-sequencing―a cost-effective method for de novo SNP marker discovery―was used to generate 66 591 high-quality SNPs. These data allowed us to identify accessions divergent from mainstream breeding germplasm that could serve as sources of novel, favorable alleles. In particular, a group of accessions from Central Asia appeared nearly as diverse as a sister species, P. fulvum, and subspecies, P. sativum subsp. elatius. Accession genotypes can be paired with new and existing phenotype data for trait mapping; as proof-of-concept, Mendel’s A gene controlling flower color was localized to its known position. SNP data were also used to define a smaller core collection of 108 accessions with similar levels of genetic diversity as the entire PSPPC, resulting in a smaller germplasm set for research screening and evaluation under limited resources. Taken together, the results presented in this study along with the release of a publicly available SNP data set comprise a valuable resource for supporting worldwide pea genetic improvement efforts.
Michael Mazourek, Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA Email: mm284@cornell.edu Phone: 607-254-7256 Fax: 607-255-6683
">PEA.SNP.PSP.PLUS.COLLECTION.2017 | | Not Available |