Pea ( Pisum sativum L.)

Redden, Bob; Leonforte, Tony; Ford, Rebecca; Croser, Janine; Slattery, J. F.

doi:10.1201/9780203489284.ch3

Cited by 12 publications

(13 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the neighbor-joining cluster, we found the placement of the two subspecies to be informative to the overall analysis of landraces from Asia. This would be explained by the environmental diversity of the regions where peas are cultivated worldwide and within China (Redden et al, 2005). elatius grouped together in an outlying cluster far from the centroid of the dendogram and apart from cultivated peas (Fig.…”

Section: Discussionmentioning

confidence: 99%

Genetic Diversity of Chinese and Global Pea (Pisum sativum L.) Collections

Li²,

Hao

et al. 2017

Crop Science

View full text Add to dashboard Cite

Pea (Pisum sativum L.) is an important food and feed legume grown across many temperate regions of the world, especially from Asia to Europe and North America. The goal of this study was to use 30 informative pea microsatellite markers to compare genetic diversity in a global core from the USDA and a core collection from the National Genebank of China (NGC). The Chinese and global collections had 295 and 305 accessions, respectively. A total of 259 alleles were detected in the full 600 accessions, with a mean of 8.7 alleles per locus. Given the range of countries represented, the global collection was found to be more diverse than the Chinese core. However, the Chinese accessions still formed two distinct groups. The first group had 90.6% spring‐planted peas from northern China. The second group had 65.9% winter‐planted peas from southern China. An outlier group included wild peas from the P. sativum elatius and asiaticum subspecies. In conclusion, the USDA collection had slightly more overall diversity than the NGC collection given its global nature, but the Chinese accessions represented a considerable fraction of overall diversity, with accessions representing spring and winter pea types from northern and southern China, respectively, that are only weakly represented in the USDA core. The origin of Chinese peas is likely to be from the region of domestication in the Middle East through an ancient route of dissemination through southern Asia, where some genetically similar peas are grown.

show abstract

Section: Discussionmentioning

confidence: 99%

Genetic Diversity of Chinese and Global Pea (Pisum sativum L.) Collections

Li²,

Hao

et al. 2017

Crop Science

View full text Add to dashboard Cite

show abstract

“…Most breeding gains for grain yield in field pea have been achieved by optimisation of crop architecture (i.e. reduced internode length), harvest index and phenology traits with growing season length and rainfall [4,5]. Breeding practices have also primarily focused on pyramiding genes for resistance to important fungal diseases such as ascochyta blight, powdery and downy mildew, and viruses such as pea seed-borne mosaic virus (PSbMV) and bean leaf roll virus (BLRV).…”

Section: Introductionmentioning

confidence: 99%

SNP marker discovery, linkage map construction and identification of QTLs for enhanced salinity tolerance in field pea (Pisum sativumL.)

et al. 2013

View full text Add to dashboard Cite

BackgroundField pea (Pisum sativum L.) is a self-pollinating, diploid, cool-season food legume. Crop production is constrained by multiple biotic and abiotic stress factors, including salinity, that cause reduced growth and yield. Recent advances in genomics have permitted the development of low-cost high-throughput genotyping systems, allowing the construction of saturated genetic linkage maps for identification of quantitative trait loci (QTLs) associated with traits of interest. Genetic markers in close linkage with the relevant genomic regions may then be implemented in varietal improvement programs.ResultsIn this study, single nucleotide polymorphism (SNP) markers associated with expressed sequence tags (ESTs) were developed and used to generate comprehensive linkage maps for field pea. From a set of 36,188 variant nucleotide positions detected through in silico analysis, 768 were selected for genotyping of a recombinant inbred line (RIL) population. A total of 705 SNPs (91.7%) successfully detected segregating polymorphisms. In addition to SNPs, genomic and EST-derived simple sequence repeats (SSRs) were assigned to the genetic map in order to obtain an evenly distributed genome-wide coverage. Sequences associated with the mapped molecular markers were used for comparative genomic analysis with other legume species. Higher levels of conserved synteny were observed with the genomes of Medicago truncatula Gaertn. and chickpea (Cicer arietinum L.) than with soybean (Glycine max [L.] Merr.), Lotus japonicus L. and pigeon pea (Cajanus cajan [L.] Millsp.). Parents and RIL progeny were screened at the seedling growth stage for responses to salinity stress, imposed by addition of NaCl in the watering solution at a concentration of 18 dS m-1. Salinity-induced symptoms showed normal distribution, and the severity of the symptoms increased over time. QTLs for salinity tolerance were identified on linkage groups Ps III and VII, with flanking SNP markers suitable for selection of resistant cultivars. Comparison of sequences underpinning these SNP markers to the M. truncatula genome defined genomic regions containing candidate genes associated with saline stress tolerance.ConclusionThe SNP assays and associated genetic linkage maps developed in this study permitted identification of salinity tolerance QTLs and candidate genes. This constitutes an important set of tools for marker-assisted selection (MAS) programs aimed at performance enhancement of field pea cultivars.

show abstract

“…Climate change can be expected to exacerbate climate unpredictability and to result in unprecedented levels of heat and drought stress during the reproductive phase in agricultural areas of the temperate, sub-tropical zones worldwide, especially in the sub-Sahara and northcentral India [35][36][37][38]. Targeted utilization of selected landraces and wild relatives for adaptation to climate change will almost certainly be an urgent priority during this century.…”

Section: Assessment and Conservation Of Pea Diversitymentioning

confidence: 99%

“…Pea production will be challenged by climate change this century. This can be expected to exacerbate climate unpredictability and to result in unprecedented levels of heat and drought stress during the reproductive phase in agricultural areas of the temperatesub-tropical zones worldwide, especially in the sub-Sahara and north central India [35][36][37][38].…”

Section: Application Of Genomics and Phenomics In Pea Breeding: Statumentioning

confidence: 99%

Pea (Pisum sativum L.) in the Genomic Era

Smýkal

Aubert²,

Burstin³

et al. 2012

Agronomy

Self Cite

195

158

View full text Add to dashboard Cite

Pea (Pisum sativum L.) was the original model organism used in Mendel's discovery (1866) of the laws of inheritance, making it the foundation of modern plant genetics. However, subsequent progress in pea genomics has lagged behind many other plant species. Although the size and repetitive nature of the pea genome has so far restricted its sequencing, comprehensive genomic and post genomic resources already exist. These include BAC libraries, several types of molecular marker sets, both transcriptome and proteome datasets and mutant populations for reverse genetics. The availability of the full genome sequences of three legume species has offered significant opportunities for genome wide comparison revealing synteny and co-linearity to pea. A combination of a candidate gene and colinearity approach has successfully led to the identification of genes underlying agronomically important traits including virus resistances and plant architecture. Some of this knowledge has already been applied to marker assisted selection (MAS) programs, increasing precision and shortening the breeding cycle. Yet, complete translation of marker discovery to pea breeding is still to be achieved. Molecular analysis of pea collections has shown that although substantial variation is present within the cultivated genepool, wild material offers the possibility to incorporate novel traits that may have been inadvertently eliminated. Association mapping analysis of diverse pea germplasm promises to identify genetic variation related to desirable agronomic traits, which are historically difficult to breed for in a traditional manner. The availability of high throughput 'omics' methodologies offers great promise for the development of novel, highly accurate selective breeding tools for improved pea genotypes that are sustainable under current and future climates and farming systems.

show abstract

Pea ( Pisum sativum L.)

Cited by 12 publications

References 84 publications

Genetic Diversity of Chinese and Global Pea (Pisum sativum L.) Collections

Genetic Diversity of Chinese and Global Pea (Pisum sativum L.) Collections

SNP marker discovery, linkage map construction and identification of QTLs for enhanced salinity tolerance in field pea (Pisum sativumL.)

Pea (Pisum sativum L.) in the Genomic Era

Contact Info

Product

Resources

About