Ingunn M. Vågen
Forsker
Forfattere
Sylvain Poque Ulrika Carlson-Nilsson Muhammad Omer Anna Palmé Ingunn M. Vågen Gert Poulsen Matti W. Leino Kristiina Himanen Hamid KhazaeiSammendrag
Faba bean ( Vicia faba L.) has great potential to contribute to sustainable agriculture and protein security globally but is known to be very sensitive to drought stress. Uncovering drought-adapted germplasm is critical for developing resilient cultivars and advancing our understanding of the mechanisms underlying stress adaptation. However, high-throughput plant phenotyping under stress conditions remain a major bottleneck in crop genetics and breeding programs. In this study, a multi-sensor indoor phenotyping platform was used to assess 44 faba bean genotypes under water deficit conditions. Standardized, monitored stress conditions were achieved by watering-by-weighing for drought onset, duration, and intensities allowing genotype-level comparisons. The genotypes showed a range of stress responses in growth and physiology, including traits such as plant height, biomass, water use efficiency (WUE), and chlorophyll fluorescence parameters. Digital biomass, derived from combined top- and side-view plant imaging, was strongly correlated with biological biomass at the experimental endpoint, validating its use as a non-destructive proxy for growth assessment in faba bean. Time-resolved generalized additive modelling further revealed genotype-specific differences in the timing and magnitude of water deficit response. Genotypes that maintained growth and WUE under water deficit conditions may serve as valuable pre-breeding materials for development of drought-adapted faba bean.
Forfattere
Pia Heltoft Thomsen Arne Gillund Jan Erik Hole Reidar Gusland Lars-Arne Høgetveit Hilde Marie Saastad Ingunn M. Vågen Arne Hermansen Gerd Guren Trond HofsvangSammendrag
Det er ikke registrert sammendrag
Sammendrag
Løk trenger god tilgang på vann gjennom nesten hele vekstperioden. Vanntilgangen ved dyrking av løk er spesielt viktig i første halvdel av vekstperioden. Følsomheten er størst i perioden når løken har 3–7 blad. For lite vann i denne perioden kan gi stort avlingstap og mindre løkstørrelse. Det er også viktig med god vanntilgang etter at løkdanningen er i gang for å sikre god løkstørrelse og avling. En grønnsakprodusent med begrenset vanningskapasitet bør gi høy prioritet til vanning av løk på forsommeren.
