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- W3096798558 abstract "Flowering time and sex determination in hemp (Cannabis sativa L.) strongly influence fibre quality and seed production of this crop. The control of these traits is paramount for the breeding of new cultivars. Yet, little is known about the genetics underlying such complex traits and a better understanding requires in depth knowledge of the molecular mechanisms responsible for these traits. In this report, the genetic architecture of flowering time and sex determination in hemp was studied using a Genome-Wide Association Studies (GWAS) approach. Association studies were performed on a panel of 123 hemp accessions, tested in three contrasting environments, using a set of 600K SNP markers. Altogether, eight QTLs were identified across environments; six for flowering time traits and two for sex determination. These QTLs covered genomic regions with 33 transcripts predicted to be involved in flowering and sex determination as well as a microRNA, miR156. Genes related to perception and transduction of light and transcription factors well-known to regulate flowering were identified in QTLs for flowering time traits. Transcription factors and genes involved in regulating the balance of phytohormones, specially auxins and gibberellic acid, were identified in QTLs for sex determination. Sex determination QTLs were associated with the development of male flowers in female plants and thus with the stability of sex determination in monoecious plants. The present study elucidates relevant knowledge on the genetic mechanisms of flowering and sex determination traits in hemp, and provides new tools for hemp breeding." @default.
- W3096798558 created "2020-11-09" @default.
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- W3096798558 date "2020-11-04" @default.
- W3096798558 modified "2023-10-14" @default.
- W3096798558 title "Genetic Architecture of Flowering Time and Sex Determination in Hemp (Cannabis sativa L.): A Genome-Wide Association Study" @default.
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- W3096798558 doi "https://doi.org/10.3389/fpls.2020.569958" @default.
- W3096798558 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7672029" @default.
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- W3096798558 hasPublicationYear "2020" @default.
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