hybridizing john & mitchie moe master rosarians pacific northwest district american rose society...
TRANSCRIPT
![Page 1: Hybridizing John & Mitchie Moe Master Rosarians Pacific Northwest District American Rose Society February 15, 2012 ‘Seattle Sunrise’ [(‘Pristine’ x ‘Selfridges’)](https://reader035.vdocuments.mx/reader035/viewer/2022062308/56649d9c5503460f94a84d68/html5/thumbnails/1.jpg)
Hybridizing
John & Mitchie MoeMaster Rosarians
Pacific Northwest DistrictAmerican Rose Society
February 15, 2012
‘Seattle Sunrise’[(‘Pristine’ x ‘Selfridges’) x ‘Finest Hour’]
Photo by Rich Baer
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Acknowledgements
Photos by authors, except where credits are shown
Excellent sources
Rose Hybridizing for Beginners,
Rose Hybridizers Association
Rose Hybridizing “The Next Step”,
Rose Hybridizers Association
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The Concept of Hybridizing
Definition – to produce or cause to produce hybrids; to crossbreed
So then – to hybridize, take the pollen from the stamens of one flower and apply it to the pistils of another
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Genetics?
Photo by Jason Kottke
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How it Really Works!
A cross of these two…….
‘Love & Peace’ ‘Blue Peter’Photo by Rich Baer Credit - Photo Files
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Produced These Seedlings
‘Lynn’ ‘Judie’‘Barbara’
SeedlingSeedling
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But, Before You Start
Stop and picture your ideal rose Now – what characteristics should it have? Some possibilities include;
A particular form – e.g., HT, Fl, Mini, etc. A specific color Fragrance Disease resistance
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Choosing a Trait of Interest
The possibilities are endless because of DNA
Thus – focus on your interest before you begin!
Do your research, and then select your parents
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A Good Place to Start
Are the parents healthy roses? Are the parents of those parents healthy? Are other combinations of its parents
healthy? You need a good reference book for
parentage – e.g., Modern Roses or Helpmefind.com
Then plan your crosses!
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The Anatomy of a Rose
Roses are capable of self fertilization as
each has stamens
(male organs), and pistils (female organs)
Texas A & MRose Breeding & Genetics Program
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Gather Your Supplies
Tweezers,camel hair
brush,pollen
containers(35mm film,
baby food jars, etc),
Q-tips, tags
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Selecting the bloom
Stamens should be starting to
show, so anthers are mature
The more petals, the more it must
be open
Timing can be critical!
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Emasculating the bloom
Removepetals to expose
the stamens
and pistils
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Emasculated Bloom
Petals removed
Pistils surrounded
by the anthers
containing pollen
Anthers
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Removing the anthers
Carefully remove anthers
with tweezers or fingers
Stamenswith
anthers removed
Stigma
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Collecting Pollen
Let mature anthers drop to a sheet of
paper for drying to release pollen
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Drying Pollen
Most pollen will be
released by the next day
The powder-like grains of pollen will be visible on the
paper
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Storing Pollen
Store pollen in a covered
container away from sunlight at room temp for
1 – 2 weeks, or refrigerate up to
4 weeks
Freeze for long term
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Applying Pollen
Apply generous amount of pollen by
clean fingertip,
Q-tip, pipe cleaner, or camel hair
brush
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Label your Cross
Label should be weather-
proof
List seed parent first followed by the pollen
parent
Include date!
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Hip Developing
If pollination was initially successful, the hip will
start to swell in a
few weeks
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Hips Maturing
It takes 90 – 120 days so the seeds
that are inside are mature and ripe for
harvest
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Hips can be any size!
One of my crosses‘Gemini’ x ‘Seattle Sunrise’
R. acicularis
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Hip cut opened
Dried stigma
Connected to ovary
Seeds
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Hip and seeds
Harvest the hip and cut
open to remove the hard, bony
seeds
Wash to remove all parts of the fleshy hip
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Soaking seeds
Soak for 1-2 days in a
mild fungicide
solution to prevent
mold that can kill the embryo in storage
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Stratifying the Seeds
Store in moist Perlite for 6 weeks
at room temp,
followed by 6 weeks in
fridge before planting
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Sowing the Seeds
Use a 2 inch deep tray with
drain holes and plant ¼ - ½ in deep in sterile
potting soil (peat/Perlite
1:1) or Sunshine #4
Add no fertilizer!
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Seedling sprouting
Once sprouted, give tray 16 hours
of light per day
Keep moist!
Mist weekly with mild
fungicide to prevent
damp-off
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Seedling after a few weeks
In 5 – 6 weeks you should see some buds
The waiting seems forever!
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Waiting for that first bloom
Watch growth for vigor, disease
resistance, etc.
Here area couple of
nice, healthy buds!
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The first bloom!
More waiting,
but a nice one!
Now, wasn’t
the wait worth it?
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The Next Step
Wait for next bloom – how many petals, how long to repeat, etc.
If a keeper, take some cuttings to see how it propagates
Plant some to check vigor, disease resistance, etc.
Evaluate – did it meet your goal?
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Questions?
‘Hot To Trot’‘Klima’ x ‘Freisinger Morgenrote’
Photo by Corinne Brown
Thank you