Mapping novel QTLs for yield related traits from a popular rice hybrid KRH-2 derived doubled haploid (DH) population

Autor:	M. Anila, E Punniakoti, K. Chaitra, M. Ayyappa Das, Pragya Sinha, G. Rekha, A. S. Hari Prasad, S. K. Hajira, Raman Meenakshi Sundaram, Divya Balakrishnan, D. Aleena, Kandasamy Ulaganathan, Mastanbee Shaik, Swapnil Ravindra Kulkarni, K. Pranathi, Sena M. Balachandran, T. Dilip, Ravindra Ramarao Kale, M. B. V. N. Kousik
Rok vydání:	2021
Předmět:	education.field_of_study Population Chromosome Environmental Science (miscellaneous) Quantitative trait locus Biology Agricultural and Biological Sciences (miscellaneous) Horticulture Grain weight Inclusive composite interval mapping Yield (chemistry) Doubled haploidy Original Article education Biotechnology Panicle
Zdroj:	3 Biotech
ISSN:	2190-572X
Popis:	A doubled haploid (DH) population consisting of 125 DHLs derived from the popular rice hybrid, KRH-2 (IR58025A/KMR3R) was utilized for Quantitative Trait Loci (QTL) mapping to identify novel genomic regions associated with yield related traits. A genetic map was constructed with 126 polymorphic SSR and EST derived markers, which were distributed across rice genome. QTL analysis using inclusive composite interval mapping (ICIM) method identified a total of 24 major and minor effect QTLs. Among them, twelve major effect QTLs were identified for days to fifty percent flowering (qDFF12-1), total grain yield/plant (qYLD3-1 and qYLD6-1), test (1,000) grain weight (qTGW6-1 and qTGW7-1), panicle weight (qPW9-1), plant height (qPH12-1), flag leaf length (qFLL6-1), flag leaf width (qFLW4-1), panicle length (qPL3-1 and qPL6-1) and biomass (qBM4-1), explaining 29.95–56.75% of the phenotypic variability with LOD scores range of 2.72–16.51. Chromosomal regions with gene clusters were identified on chromosome 3 for total grain yield/plant (qYLD3-1) and panicle length (qPL3-1) and on chromosome 6 for total grain yield/plant (qYLD6-1), flag leaf length (qFLL6-1) and panicle length (qPL6-1). Majority of the QTLs identified were observed to be co-localized with the previously reported QTL regions. Five novel, major effect QTLs associated with panicle weight (qPW9-1), plant height (qPH12-1), flag leaf width (qFLW4-1), panicle length (qPL3-1) and biomass (qBM4-1) and three novel minor effect QTLs for panicle weight (qPW3-1 and qPW8-1) and fertile grains per panicle (qFGP5-1) were identified. These QTLs can be used in breeding programs aimed to yield improvement after their validation in alternative populations. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13205-021-03045-7.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::316d63c8885ac42f2eb86cdb3bdea7b2 https://pubmed.ncbi.nlm.nih.gov/34926111 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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