Any Genetic Difference in which Pod Parent Plant you Choose?
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Any Genetic Difference in which Pod Parent Plant you Choose?
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Any Genetic Difference in which Pod Parent Plant you Choose? Members Any Genetic Difference in which Pod Parent Plant you Choose? Any Genetic Difference in which Pod Parent Plant you Choose? Today's PostsAny Genetic Difference in which Pod Parent Plant you Choose? Any Genetic Difference in which Pod Parent Plant you Choose? Any Genetic Difference in which Pod Parent Plant you Choose?
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 01-23-2019, 10:06 AM
Ki6bud Ki6bud is offline
Member
 

Join Date: May 2018
Posts: 50
Default Any Genetic Difference in which Pod Parent Plant you Choose?

Is there any genetic difference in which Phalaenopsis you choose to be the pod parent? So, if you have two Phals and you cross pollinate the two with the other's pollen, will the outcome of the progeny be different?
Reply With Quote
  #2  
Old 01-23-2019, 10:36 AM
MrHappyRotter MrHappyRotter is offline
Senior Member
 

Join Date: Aug 2013
Zone: 7b
Location: Raleigh, NC
Posts: 1,197
Any Genetic Difference in which Pod Parent Plant you Choose? Male
Default

There's a lot of hand waving and glossing over some details here, so bare that in mind.

During fertilization, each plant contributes half its genes to the cross. As long as both plants have the same number of sets of chromosomes, called ploidy, there will be little to no discernible difference at a population level in terms of the genetics between offspring from using one plant as the pod parent versus using the other plant as the pod parent.

However, the egg from the mother is the sole donor of mitochondria, which are the cell's metabolic power stations. Mitochondria are basically symbiotic microbes themselves, and even have their own DNA. As a result, the mother plant exclusively provides 100% of the mitochondrial DNA to a cross. So, when you consider that, then yes, at a genetic level, the choice of pod parent does make a genetic difference.

With the right tests, and assuming the two plants you chose are from different maternal lineages to begin with, then it's possible to discern between a cross using one plant as the pod parent compared to a cross using the other plant as the pod parent.

It's basically a matter of 2 sets of DNA to consider: The plant's DNA and its mitochondrial DNA. The plant's DNA isn't going to differ substantially at a population level regardless of which parent is chosen as the pod parent. The mitochondrial DNA does, assuming the two plants have different maternal lineages.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Ki6bud liked this post
  #3  
Old 01-23-2019, 10:50 AM
Ki6bud Ki6bud is offline
Member
 

Join Date: May 2018
Posts: 50
Default

I never thought about the mitochondria DNA as being a factor when crossing. If the two plants do have different maternal lineages, will there be a larger percentage of offspring that will contain the mother's characteristics?
Reply With Quote
  #4  
Old 01-23-2019, 11:24 AM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 18,654
Any Genetic Difference in which Pod Parent Plant you Choose? Male
Default

Essentially all the mitochondria of all living organisms come from the female parent. On rare occasions one, or a tiny number, might come from the male parent if something goes wrong during spermatogenesis.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
  #5  
Old 01-23-2019, 11:41 AM
MrHappyRotter MrHappyRotter is offline
Senior Member
 

Join Date: Aug 2013
Zone: 7b
Location: Raleigh, NC
Posts: 1,197
Any Genetic Difference in which Pod Parent Plant you Choose? Male
Default

Well, you asked about genetic differences, so I kept my first response mostly to that. Phenotypic differences? That's a whole other level of ambiguous complexity. LOL The most concise answer I can come up with is "It depends."

Selection of the pod parent can influence a plant's general vigor, growth rate, vegetative size, and even to an extent things like floriferousness and flower quality. In practice, the differences are generally minimal if discernible at all. Sometimes breeders will make specific choices about pod parent based on vigor or plant size with the expectation that the offspring will be more likely to take after the pod parent in those regards. Presumably that hunch works out sometimes as a direct result of the pod parent's mitochondria (and thus mitochondrial dna).
Reply With Quote
  #6  
Old 01-23-2019, 12:23 PM
Ki6bud Ki6bud is offline
Member
 

Join Date: May 2018
Posts: 50
Default

Very interesting. Yes, you answered my question. Thank you.
Reply With Quote
  #7  
Old 01-23-2019, 02:52 PM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Any Genetic Difference in which Pod Parent Plant you Choose? Male
Default

If the two "pod" parents are the same species or same hybrid, they are VERY unlikely to have identical DNA (infinitesimal probability), and considering the bell-curve distribution of traits, you're going to end up with a LOT of different offspring.

Certainly, SOME of them might look similar, but there will be some wildly different offspring, as well.
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #8  
Old 02-01-2019, 09:53 PM
Fairorchids's Avatar
Fairorchids Fairorchids is offline
Senior Member
 

Join Date: Aug 2013
Zone: 7a
Location: North Plainfield, NJ
Posts: 2,819
Any Genetic Difference in which Pod Parent Plant you Choose? Male
Default

Apart from the DNA issues discussed above, there can be considerable differences between AxB and BxA. For example:
  • Cattleya Horace 'Maxima' is known to impart good shape to it's progeny, but it tends to be recessive in terms of color dominance.
  • The same applies to Paphiopedilum Hellas 'Westonbirt'.
  • When you cross Paph insigne with Paph villosum (= Paph Nitens), the pod parent strongly dominates the flower shape, but the colors are always identical to Paph insigne.
  • In a different branch of the orchid family, I have seen a lot of Vandachostylis Pinky (formerly Neostylis Pinky), which is the cross between Vanda (Neofinetia) falcata and Rhynchostylis gigantea. When Vanda falcata is the pod parent, the plant is tiny (4-6" NS) and the flowers are star shaped. When Rhy gigantea is the pod parent, plants are much larger (8-10" NS), and flower segments are much wider.

I don't know much about dominant traits in the Phalaenopsis group, so I can't give you examples there.
__________________
Kim (Fair Orchids)

Founder of SPCOP (Society to Prevention of Cruelty to Orchid People), with the goal of barring the taxonomists from tinkering with established genera!

I am neither a 'lumper' nor a 'splitter', but I refuse to re-write millions of labels.
Reply With Quote
  #9  
Old 02-04-2019, 11:13 AM
Ki6bud Ki6bud is offline
Member
 

Join Date: May 2018
Posts: 50
Default

I remember a lot of my genetic diagrams in University with recessive and dominant traits. Unfortunately with all of the hybridization, "pure" traits may be buried and it would be a lot of work to re-invent the wheel.
Reply With Quote
Reply

Bookmarks

Tags
choose, difference, genetic, parent, pod


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why you can not id a phal hybrid dennis Identification Forum 11 11-06-2015 01:00 PM
Let's Play "Name That Orchid"!! AaronM Identification Forum 37 05-28-2008 01:15 PM
difference between plant & aquarium & sun light ladyslipper Growing Under Lights 1 06-10-2007 07:22 PM
Dendrobium aggreatum majus TOMD Dendrobium Alliance 6 05-28-2007 03:31 PM

All times are GMT -4. The time now is 10:08 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.