Population Structure, Genetic Diversity and Molecular Marker-Trait Association Analysis for High Temperature Stress Tolerance in Rice

Autor: Jitandriya Meher, Elssa Pandit, Annamalai Anandan, Sudipti Mohapatra, Sharat Kumar Pradhan, Anumalla Mahender, Ambika Sahoo, Saumya Ranjan Barik, Deepak Kumar Nayak
Rok vydání: 2016
Předmět:
0106 biological sciences
0301 basic medicine
Leaves
lcsh:Medicine
Population genetics
Plant Science
01 natural sciences
chemistry.chemical_compound
Plant Resistance to Abiotic Stress
Molecular marker
Cluster Analysis
lcsh:Science
Genetics
Principal Component Analysis
education.field_of_study
Multidisciplinary
Ecology
Physics
Plant Anatomy
Temperature
Classical Mechanics
Agriculture
Plants
Phenotypes
Phenotype
Plant Physiology
Physical Sciences
Mechanical Stress
Research Article
Genetic Markers
Thermotolerance
Inflorescences
DNA
Plant
Genotype
Breeding program
Population
Crops
Biology
Quantitative trait locus
Research and Analysis Methods
03 medical and health sciences
Model Organisms
Plant and Algal Models
Plant-Environment Interactions
Genetic variation
Plant Defenses
Grasses
Panicles
education
Alleles
Evolutionary Biology
Genetic diversity
Population Biology
Plant Ecology
Ecology and Environmental Sciences
lcsh:R
Organisms
Genetic Variation
Biology and Life Sciences
Oryza
Plant Pathology
Plant Leaves
Plant Breeding
Thermal Stresses
030104 developmental biology
chemistry
Genetic Loci
Genetic marker
lcsh:Q
Rice
Population Genetics
Crop Science
Cereal Crops
010606 plant biology & botany
Zdroj: PLoS ONE, Vol 11, Iss 8, p e0160027 (2016)
PLoS ONE
ISSN: 1932-6203
Popis: Rice exhibits enormous genetic diversity, population structure and molecular marker-traits associated with abiotic stress tolerance to high temperature stress. A set of breeding lines and landraces representing 240 germplasm lines were studied. Based on spikelet fertility percent under high temperature, tolerant genotypes were broadly classified into four classes. Genetic diversity indicated a moderate level of genetic base of the population for the trait studied. Wright’s F statistic estimates showed a deviation of Hardy-Weinberg expectation in the population. The analysis of molecular variance revealed 25 percent variation between population, 61 percent among individuals and 14 percent within individuals in the set. The STRUCTURE analysis categorized the entire population into three sub-populations and suggested that most of the landraces in each sub-population had a common primary ancestor with few admix individuals. The composition of materials in the panel showed the presence of many QTLs representing the entire genome for the expression of tolerance. The strongly associated marker RM547 tagged with spikelet fertility under stress and the markers like RM228, RM205, RM247, RM242, INDEL3 and RM314 indirectly controlling the high temperature stress tolerance were detected through both mixed linear model and general linear model TASSEL analysis. These markers can be deployed as a resource for marker-assisted breeding program of high temperature stress tolerance.
Databáze: OpenAIRE
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