Projects per year
Abstract
Flowering time and sex determination in hemp (Cannabis sativa L.) strongly influence fiber 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 600 K 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 monecious 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.
Original language | English |
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Article number | 569958 |
Journal | Frontiers in Plant Science |
Volume | 11 |
DOIs | |
Publication status | Published - 4 Nov 2020 |
Keywords
- Cannabis sativa
- flowering time
- GWAS
- hemp
- plant breeding
- QTL
- sex determination
Fingerprint
Dive into the research topics of 'Genetic Architecture of Flowering Time and Sex Determination in Hemp (Cannabis sativa L.): A Genome-Wide Association Study'. Together they form a unique fingerprint.Datasets
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Dataset for the annotations of the transcriptome of the hemp cultivar C. sativa ‘Finola’ (finola1) and the marihuana cultivar C. sativa ‘Purple Kush’
Petit Pedro, J. (Creator), Salentijn, E. (Creator), van Loo, R. (Creator), Caldas Paulo, J. (Creator), Denneboom, C. (Creator) & Trindade, L. (Creator), Wageningen University & Research, 21 Oct 2020
DOI: 10.4121/13121885
Dataset
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Dataset of the RADseq data and genotyping from a panel of 123 hemp accessions
Petit Pedro, J. (Creator), Salentijn, E. (Creator), van Loo, R. (Creator), Caldas Paulo, J. (Creator), Denneboom, C. (Creator) & Trindade, L. (Creator), Wageningen University & Research, 7 Oct 2020
DOI: 10.4121/12826832
Dataset
Projects
- 1 Finished
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MULTIHEMP: Multipurpose hemp for industrial bioproducts and biomass
1/09/12 → 28/02/17
Project: EU research project