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Agriculture

University of Nebraska - Lincoln

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Drought stress

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Single And Multi-Trait Gwas Identify Genetic Factors Associated With Production Traits In Common Bean Under Abiotic Stress Environments, Atena Oladzad, Timothy G. Perch, Juan Carlos Rosas, Samira Mafi Moghaddam, James Beaver, Steve E. Beebe, Jimmy Burridge, Celestina Nhagupana Jochua, Magalhaes Amade Miguel, Phillip N. Miklas, Bodo Raatz, Jeffery W. White, Jonathan Lynch, Phillip E. Mcclean Jun 2019

Single And Multi-Trait Gwas Identify Genetic Factors Associated With Production Traits In Common Bean Under Abiotic Stress Environments, Atena Oladzad, Timothy G. Perch, Juan Carlos Rosas, Samira Mafi Moghaddam, James Beaver, Steve E. Beebe, Jimmy Burridge, Celestina Nhagupana Jochua, Magalhaes Amade Miguel, Phillip N. Miklas, Bodo Raatz, Jeffery W. White, Jonathan Lynch, Phillip E. Mcclean

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The genetic improvement of economically important production traits of dry bean (Phaseolus vulgaris L.), for geographic regions where production is threatened by drought and high temperature stress, is challenging because of the complex genetic nature of these traits. Large scale SNP data sets for the two major gene pools of bean, Andean and Middle American, were developed by mapping multiple pools of genotype-by-sequencing reads and identifying over 200k SNPs for each gene pool against the most recent assembly of the P. vulgaris genome sequence. Moderately sized Bean Abiotic Stress Evaluation (BASE) panels, consisting of genotypes appropriate for production in …


Seedling Root Architecture And Its Relationship With Seed Yield Across Diverse Environments In Phaseolus Vulgaris, Christopher F. Strock, James Burridge, Anica S.F. Massas, James S. Beaver, Steve E. Beebe, Samuel A. Camilo, Deidre Fourie, Celestina Nhagupana Jochua, Magalhaes Amade Miguel, Phillip N. Miklas, Eninka Mndolwa, Susan Nchimbi-Msolla, Jose Polania, T. Porch, Juan C. Rosas, Jennifer J. Trapp, Jonathan P. Lynch Jan 2019

Seedling Root Architecture And Its Relationship With Seed Yield Across Diverse Environments In Phaseolus Vulgaris, Christopher F. Strock, James Burridge, Anica S.F. Massas, James S. Beaver, Steve E. Beebe, Samuel A. Camilo, Deidre Fourie, Celestina Nhagupana Jochua, Magalhaes Amade Miguel, Phillip N. Miklas, Eninka Mndolwa, Susan Nchimbi-Msolla, Jose Polania, T. Porch, Juan C. Rosas, Jennifer J. Trapp, Jonathan P. Lynch

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Seedling root phenotypes may have important impacts on fitness and are more easily measured than mature root phenotypes. We phenotyped the roots of 577 genotypes of common bean (Phaseolus vulgaris), representing the bulk of the genetic diversity for recent cultivars and landraces in this species. Root architectural phenotypes of seedlings germinated for nine days were compared to root architectural phenotypes in the field as well as seed yield across 51 environments with an array of abiotic stresses including drought, nutrient deficiency, and heat, as well as non-stress conditions. We observed repeatability ranging from 0.52–0.57 for measures of root phenotypes in …


Gge Biplot Analysis Of Yield Stabi Lity For Andean Dry Bean Accessions Grown Under Different Abiotic Stress Regimes In Tanzania, E. J. Mndolwa, S. N. Msolla, T. G. Porch, Phillip N. Miklas Jan 2019

Gge Biplot Analysis Of Yield Stabi Lity For Andean Dry Bean Accessions Grown Under Different Abiotic Stress Regimes In Tanzania, E. J. Mndolwa, S. N. Msolla, T. G. Porch, Phillip N. Miklas

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Large seeded Andean dry beans (Phaseolus vulgaris L.) are most preferred in Africa. However, low soil fertility and increasing drought stress conditions due to climate change are among the challenges faced by farmers in this region. The purpose of this study was to identify Andean genotypes with yield stability and to identify the best environments for selection of this trait. GGE-Biplot analysis was used to examine 183 Andean bean genotypes in Tanzania. Results indicated significant environment (E), genotype (G) and genotype x environment (GE) effects for seed yield. The environment explained 46%, genotype 20%, and GE 34% of the total …