freising weihenstephan sunpatiens new guinea impatiens cold tolerance trials n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Freising-Weihenstephan SunPatiens & New Guinea Impatiens cold tolerance trials PowerPoint Presentation
Download Presentation
Freising-Weihenstephan SunPatiens & New Guinea Impatiens cold tolerance trials

Loading in 2 Seconds...

play fullscreen
1 / 52

Freising-Weihenstephan SunPatiens & New Guinea Impatiens cold tolerance trials - PowerPoint PPT Presentation


  • 95 Views
  • Uploaded on

Freising-Weihenstephan SunPatiens & New Guinea Impatiens cold tolerance trials. April 2012 Garry Grueber / Cultivaris. Climate-controlled greenhouse compartments for NG/SP trials. SP/NGI trials at 12°C in temperature-controlled greenhouse compartment. SP Compact Magenta. SP Compact Orange.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Freising-Weihenstephan SunPatiens & New Guinea Impatiens cold tolerance trials' - rumer


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
freising weihenstephan sunpatiens new guinea impatiens cold tolerance trials

Freising-WeihenstephanSunPatiens & New Guinea Impatiens coldtolerancetrials

April 2012

Garry Grueber / Cultivaris

slide4

SP Compact Magenta

SP Compact Orange

Overview of 12°C compartment, 9 cvs, 4 repetitions with 10 plants/repetition

slide6

Overview 12°C compartment

SP Compact Magenta

SP Compact Orange

SP Compact Deep Rose

slide16

SP Compact Orange grown in soil at 12°C, substantially smaller than plants grown in hydroponic system

slide17

SP Compact Orange at 12°C in hydroponic system: substantially larger and lusher due to optimized nutrition levels

slide22

Overview 16°C compartment

SP Compact Orange (significantly larger and lusher)

slide23

SP Compact Magenta

Overview 16°C compartment

slide24

Trials in 16°C compartment

SP Compact Deep Rose

SP Compact Magenta

results of climate compartment trials
Results of climate compartment trials
  • Plants were always lusher and larger in hydroponic system due to optimized nutrient availability and uptake
  • Flowers and buds were constantly removed and weighed, but it was confirmed that SunPatiens were substantially earlier to flower at all temperatures.
  • SunPatiens have a more aggressive and larger root system
  • At 12°C, SP Compact Orange and Compact Magenta had about 3 times the fresh mass of comparative NGI varieties
  • Compact Deep Rose is substantially smaller than Compact Orange and Compact Magenta, especially at lower temperatures – comparable in size and performance to standard NGIs
slide31

SP/NGI climate-chamber trialswith extreme cold stress (8°C and 4°C, control 20°C) to induce ethane production (instead of ethylene); goal was to see if ethane can be used as a quick test for cold tolerance.Cold exposure: 3-4 weeks

slide32
SP/NGI climate-chamber trialswith extreme cold stress (8°C, after cultivation at 20°C)Cold exposure: 3-4 weeks
slide42
SunPatiens thrive and perform at substantially lower temperatures than standard New Guinea Impatiens
slide43
At all three temperature regimes, SunPatiens were quicker to finish and quicker to flower than standard New Guinea Impatiens
slide44
Root mass and root development is significantly stronger and fuller with SunPatiens than with standard New Guinea Impatiens
slide45

Nutrient uptake is significantly higher with SunPatiens than with standard New Guinea Impatiens, hence need higher fertilizer rates for full performance

slide46
Without hardening off, SunPatiens will also suffer from sudden exposure to really low (above-freezing) temperatures.
slide47
Within the Compact series, there are still substantial differences in vigor, performance and cold tolerance between cultivars
slide48
Intense breeding and selection is needed to “true up” the Compact series and create a truly uniform, grower-friendly series
slide49

Most important: with SunPatiens, we have an exceptional product line that will perform extremely well under conditions that will damage and stunt competitive lines

slide50

Further research is needed to screen all SunPatiens varieties in the assortment, and all future varieties in the pipeline, in regard to cold tolerance

slide51
Further research is also needed to compare the cold tolerance of SunPatiens varieties with competitive lines such as SunHarmony
slide52
Many thanks and recognition goes to Dümmen for financing much of the research conducted, and for allowing us to share with the network