| GENSTOCK | py | Precocious yellowing, foliage color normal until near maturity, then foliage and pods rapidly turning yellow. Stem base pale. | | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | r | Cotyledons wrinkled, starch grains compound; amylose, sugar content and water uptake higher. R Rb round or smooth, r Rb wrinkled with compound starch grains, R rb wrinkled with simple starch grains and r rb wrinkled with compound starch | 4 - r | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | o | Foliage and pods yellowish green, I cotyledons very light yellow. Young pods with characteristic green stripe along upper and lower suture. | | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | gp | Pods yellow. New growth, peduncles and sepals often yellowish so character may be discerned before pods develop. | 2 - gp | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | i | Cotyledons green. | 1 - I | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | le | Internodes short, with zigzag pattern. Pleiotropic effects: flowering time slightly later; shorter roots; leaf and pod colors darker. | 2 - le | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | F | Dominant allele conditions testa with small violet spots . Spots more or less sharp and densely distributed, sometimes enlarging, bleached and reddish with b. Polymeric and duplicate to Fs. | 1 - F | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | cov | Foliage dark bluish green. | | 0 | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | cr | Flower color crimson; cr ce pale rose purple, cr ar light mauve, cr b antique rose. | | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | d | Axil pigmentation, d gives no pigmentation; Dco conditions a single pigment ring around the axil; Dw conditions a double ring. | 7 - Dw | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | a | Anthocyanin production. | 1 - A | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | bt | Bt pod apex blunt, bt pod apex pointed. | 3 - bt | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | Fs | Dominant allele conditions testa with small violet spots. Spots more or less sharp, densely distributed, sometimes enlarging, bleached with b. Polymeric and duplicate to F. | 1 - Fs | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| GENSTOCK | er | Probably er-1, er-2 or possibly en. | 1 - Er | | PEA-GENSTOCKS | W6 15163 94o 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 two decimal place. | 1.83 | | PEA-GENSTOCKS.2006.SHOUSE | W6 15163 2006i 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 two decimal place. | 7.7 | | PEA-GENSTOCKS.2006.SHOUSE | W6 15163 2006i SD | Not Available |
| MORPHOLOGY | Plant vegetative color | Plant vegetative color while in bloom | 17 - Munsell hue number: 7.5 GY 4 | | PEA-GENSTOCKS.2006.SHOUSE | W6 15163 2006i SD | Not Available |
| MORPHOLOGY | 100 Seed weight in grams | Weight of 100 seeds in grams. | 28.8 | | PEA.SEEDWEIGHT.WRPIS | W6 15163 95i SD | Not Available |
| OTHER | Marx Cross Number | Cross number used by Dr. Marx. Related accessions can be located by querying for the same cross number. | 74-151 | | PEA-GENSTOCKS | W6 15163 94o SD | Not Available |
| OTHER | Image/picture1 | A picture or image | flower | | PEA-GENSTOCKS.IMAGE.FLOWER | W6 15163 2004i SD | Not Available |
| OTHER | Image/picture1 | A picture or image | flower | | PEA-GENSTOCKS.IMAGE.FLOWER | W6 15163 2007i SD | Not Available |
| OTHER | Image/picture1 | A picture or image | plant | | PEA-GENSTOCKS.IMAGE.PLANT | W6 15163 2004i SD | Not Available |
| OTHER | Image/picture1 | A picture or image | plant | | PEA-GENSTOCKS.IMAGE.PLANT | W6 15163 2007i SD | Not Available |
| OTHER | Image/picture1 | A picture or image | pod | | PEA-GENSTOCKS.IMAGE.POD | W6 15163 2007i SD | Not Available |
| OTHER | Image/picture1 | A picture or image | tendril | | PEA-GENSTOCKS.IMAGE.TENDRIL | W6 15163 2004i SD | Not Available |
| OTHER | Image/picture2 | A picture or image | plant | | PEA-GENSTOCKS.IMAGE.PLANT | W6 15163 2004i SD | Not Available |
| PHENOLOGY | Day of first bloom | Day of the year when flowering begins. | 135 | | PEA-GENSTOCKS.2006.SHOUSE | W6 15163 2006i SD | 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
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