English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) pollen stored at low moisture content experiences imbibition shock when put directly onto culture media. This can be overcome by rehydrating the pollen in 100 % relative humidity prior to culturing. The long-term effect of rehydration on pollen tube growth was investigated. The impact that osmoticants such as sucrose and poly- ethylene glycol (PEG) have on pollen elongation and tube formation was also studied, using culture media of increasing osmotic potentials obtained with different sucrose/PEG ratios. Rehydration not only improved survival and pollen development on all media but also enhanced pollen tube induction and growth on most of them. Douglas fir pollen produced tubes over a wide range of osmot- ic potentials (-0.73 to -1.88 MPa). Depending on the sucrose/PEG ratio, between 5 and 55 % of grains produced tubes. There was

In vitro Douglas fir pollen germination: influence of hydration, sucrose and polyethylene glycol