Mapping QTLs for Plant Phenology and Production Traits Using Indica Rice (Oryza sativa L.) Lines Adapted to Rainfed Environment

Drought is a major abiotic stress limiting rice production and yield stability in rainfed ecosystems. Identifying quantitative trait loci (QTL) for rice yield and yield components under water limited environments will help to develop drought resilient cultivars using marker assisted breeding (MAB) s...

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Veröffentlicht in:Molecular biotechnology 2012-10, Vol.52 (2), p.151-160
Hauptverfasser: Suji, K. K, Biji, K. R, Poornima, R, Prince, K. Silvas Jebakumar, Amudha, K, Kavitha, S, Mankar, Sumeet, Babu, R. Chandra
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container_issue 2
container_start_page 151
container_title Molecular biotechnology
container_volume 52
creator Suji, K. K
Biji, K. R
Poornima, R
Prince, K. Silvas Jebakumar
Amudha, K
Kavitha, S
Mankar, Sumeet
Babu, R. Chandra
description Drought is a major abiotic stress limiting rice production and yield stability in rainfed ecosystems. Identifying quantitative trait loci (QTL) for rice yield and yield components under water limited environments will help to develop drought resilient cultivars using marker assisted breeding (MAB) strategy. A total of 232 recombinant inbred lines of IR62266/Norungan were used to map QTLs for plant phenology and production traits under rainfed condition in target population of environments. A total of 79 QTLs for plant phenology and production traits with phenotypic variation ranging from 4.4 to 72.8% were detected under non-stress and drought stress conditions across two locations. Consistent QTLs for phenology and production traits were detected across experiments and water regimes. The QTL region, RM204–RM197–RM217 on chromosome 6 was linked to days to 50% flowering and grain yield per plant under both rainfed and irrigated conditions. The same genomic region, RM585–RM204–RM197 was also linked to harvest index under rainfed condition with positive alleles from Norungan, a local landrace. QTLs for plant production and drought resistance traits co-located near RM585–RM204–RM197–RM217 region on chromosome 6 in several rice genotypes. Thus with further fine mapping, this region may be useful as a candidate QTL for MAB, map-based cloning of genes and functional genomics studies for rainfed rice improvement.
doi_str_mv 10.1007/s12033-011-9482-7
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K</creatorcontrib><creatorcontrib>Biji, K. R</creatorcontrib><creatorcontrib>Poornima, R</creatorcontrib><creatorcontrib>Prince, K. Silvas Jebakumar</creatorcontrib><creatorcontrib>Amudha, K</creatorcontrib><creatorcontrib>Kavitha, S</creatorcontrib><creatorcontrib>Mankar, Sumeet</creatorcontrib><creatorcontrib>Babu, R. Chandra</creatorcontrib><title>Mapping QTLs for Plant Phenology and Production Traits Using Indica Rice (Oryza sativa L.) Lines Adapted to Rainfed Environment</title><title>Molecular biotechnology</title><addtitle>Mol Biotechnol</addtitle><addtitle>Mol Biotechnol</addtitle><description>Drought is a major abiotic stress limiting rice production and yield stability in rainfed ecosystems. Identifying quantitative trait loci (QTL) for rice yield and yield components under water limited environments will help to develop drought resilient cultivars using marker assisted breeding (MAB) strategy. 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subjects Adaptation, Physiological
alleles
Biochemistry
Biological and medical sciences
Biological Techniques
Biotechnology
breeding
Cell Biology
Chemistry
Chemistry and Materials Science
chromosome 6
Chromosome Mapping - methods
chromosomes
Cloning
Crop production
Crop yield
Crops, Agricultural - genetics
Crops, Agricultural - growth & development
Cultivars
drought
Drought resistance
drought tolerance
Droughts
Ecosystem
ecosystems
Flowering
Fundamental and applied biological sciences. Psychology
Gene mapping
Genome, Plant
Genomics
Genotype
Genotype & phenotype
Genotypes
Grain
grain yield
harvest index
harvesting
Human Genetics
inbred lines
Inbreeding
irrigated conditions
landraces
Molecular biology
molecular cloning
Monoclonal antibodies
Oryza - genetics
Oryza - growth & development
Oryza sativa
Phenology
Phenotype
phenotypic variation
Phenotypic variations
Plant biology
Plant breeding
Plant production
Protein Science
Quantitative trait loci
Quantitative Trait Loci - genetics
Rain
Rice
Stress
Water regimes
water stress
title Mapping QTLs for Plant Phenology and Production Traits Using Indica Rice (Oryza sativa L.) Lines Adapted to Rainfed Environment
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