Button Ads!         



                  GrowStoreFinder.com Grow Shop Directory            1-15-2014                              GreenBookPages.com Grow Shop’s Directory Product Reviews 
         Local grow shops and hydroponic store locator with reviews                      
Find Local Hydroponics Shops and Grow Stores.   10-10-14  
Mega Text Ad’s Spaces Available! 
                                                                                   Advertise On All 3 Of Our Marijuana Websites   


  We Update Daily!

Chris S. Kenoyer. Owner
MMJ Patient, Medical Activist,
Online Patients Advocate, 
Online MMJ News Journalist 

My Personal Medical Bio 

Follow Us Now On Twitter


Or Follow Us Now
  On Facebook

        Email Us Here

Or Email Us Securely Here
NEW 100% Encrypted Email Server

OLP’s Free MMJ News EList  
Get The Latest In MMJ News

Press Contact Info

 Is CBD?  A Possible Cure For
Breast Cancer..? And All The Other
Many Forms & Types Of Cancer..?
Learn More About CBD Here


Advertise Here On OnlinePot
Rates As Low As  $50 a Year
24/7 – 365 Days A Year Of Sales! 


Website Navigational Links

Main Start Page 2


Latest Marijuana News Reports


Parody’s Cartoons US 
Government Grown Pot,
Term Papers, School 
Reports, & Thesis’s On  
Marijuana & Cannabis


Amsterdam A to Z


Canadian Marijuana Websites


Church’s & Pot Cannabis


Co-Ops, Clinics, Dispensary’s 


Marijuana Doctors & Clinics 


Pot Cooking Recipes


Drug Testing A To Z


Pot Games


Pot Songs Video’s


100’s Of Grow Guides  


Hash A- Z


Cannabis Legal Info, Drug 
Lawyers, State, Federal Laws, 
State  & Supreme Court Rulings


POW’s Of The MMJ War!


Other Marijuana Websites 
Reciprocal Link Exchange


Medical Marijuana Studies, 
Research Report’s, Medical
Cannabis Clinic Study’s


Parody’s & Cartoons  
When We All Need A Good Laugh!  


Avoiding Online MOM Scammers
Newly Re-Updated Info!


The Politics Of Contraband 
Medical Marijuana In The Mail?


The Hall Of Shame Section
The Online MOM Scammers 


Online MOM Providers Ads


Politicians & Voters Rights


Medical Marijuana, Strains 


The OG  Marijuana Strain Guide


800+ FAQ Growing Questions


Patients Spiritual Guidance,
Free Online Crisis Help Center


Online Marijuana Seed Banks


Maximum Security Section 
      Just Updated!    


Traveling Tips, Guides, B & B’s


Vaporizers A To Z


Online Pot Video’s & Movies


Please Visit Both Of Our Sister Websites!

Maine Patients Coalition.org

The Reefer Madness Teaching Museum.org 

Listen Right Here Online! 
To Original 1930-1950’s
Reefer Madness Propaganda 
Radio Shows And Programs
Before TV There Were 
"Radio Stars"





Legal Disclaimer

Guest Book

Translate Text or Web Page Go To:
Language Tools Google Translations

Article Submissions &  News
Reports Are Always Gladly
Accepted Here.


No part of this site maybe used or
reproduced in whole or in part
without the written consent of the
Copyright Owner

1999-2013 Copyright
? All rights reserved

OnlinePot assumes no legal liability for any products, or information or  
news posted, services offered,  Or
any contests or give away’s offered.



What is a phenotype and what does phenotype mean?

  Added by: 10k  Last edited by: 10k  Viewed: 957 times   Rated by 25 users: 9.00/10
Contributed by: Chimera

Phenotype is one of the most incorrectly used terms on marijuana grow forums in my opinion.

What does phenotype really mean?

Phenotype is the observable/qualifiable/quantifiable representation of a trait.

So what does that mean?

Most folks say there are two main genres, sativa dominant and indica dominant, when actually there is a wide range of leaf phenotypes… the skinny sativa like class, thick indica type class, and many intermediate phenotypes in between the two.

This can be further compounded by leaves that are pinnate, webbed (ducks foot), curly, pointy tipped, round tipped, single or double serrations etc etc. A quick look in the book MJ botany will show a page of many different leaf phenotypes.

In this case we are talking about LEAF phenotype. All of these phenotypes can also show purple leaf, or green leaf, The green leafs can be classified as lime green or dark green.. thick leaved, thin leaved (texture).

Any of these plants may also show purple buds, or green buds… or even red buds.

See where this is going? There are multiple phenotypes for each and every discernable trait, well more than two. If you examine a pure indica population, you will see variation across the population with respect to many traits.

We have still only looked at two parts of the plant…. the leaf and the buds.

The buds can further be broken down into many different characteristics.

Highly resinous buds vs not quite as resinous. High THC content, or high CBD content. We also have mixed CBD/THC content. This can be further expanded to low overall levels of the primary cannabinoid (THC, CBD, or mixed), or high levels of the primary cannabinoid.

What about bud density? Dense, airy, or somewhere in between?. Large calyxes or small? Round tipped smaller buds, or long pointy tipped buds? What about large round buds? Small pointy ones? Small airy ones? Large airy ones?

Smells… fruity, skunky, piney? If fruity, citrus or berry? Citrus? Grapefruit? lemon? Orange? Strawberry? Blueberry? Grape?

All of these traits can come together in any combination… when we start thinking about which traits are associated, we are actually thinking about something called linkage.

For example, myself and another breeder have found that orange seems to segregate (appear most often) along with the pointy tipped bud characteristic.

In order to determine linkage, we have to calculate the frequency of occurrence of these two traits, or phenotypes, in the same plant, over an entire population… the larger the population, the more confident we can be that our conclusions about linkage are accurate.

So when you see a breeder or seed maker say “I selected the most Thai dominant males”, you should ask how did that seed maker determine which were the most “Thai dominant”.

If he says leaf traits, you should laugh!!


Because leaf traits are not known to segregate with the overall positive characteristics of Thai’s… there is no assurance that the selection for thin leaves, will in turn guarantee the selection for the uplifting, soaring, STRONG Thai type of high. Get it?

The only way to select for the Thai high is to cross MANY males to the chosen/desired females, and examine the progeny of each lot individually, in order to determine which male(s) contributed the desired genes.

If you want my honest opinion…. seed descriptions are a scam. They are advertising tools, and should be looked at as such by the seed buying public. If you notice, many seed makers have started giving “probable outcomes” of plants that they have not grown. A quick look through some of our sponsors shows this in droves.

Don’t be on the lookout for any plant that say have a “grape” flavour, just because the “breeder” says says these are the most potent. The grape one might have been the most potent in the 10 to 15 seedlings he grew (LOL), but overall the grape flavoured one may be less potent on average.

If a claim is made to look for any phenotype, ask how they came to that conclusion.

You should only be on the look out for the grape flavour if that is the most important criteria for you.

If you want the most potent, keep clones of each and after you have harvested only keep the clones from the most potent plants. It just depends on what YOU find important… to me, when growing drug cannabis, I look for drug content.

OK, so I got off topic a little, but I hope you can see what I was trying to say… there are many possible observable phenotypes for each trait, not just two. It is far more complex than just sativa or indica. Beware of seed makers that make it seem this easy is my advice. If you don’t believe me, just grow a couple of packs of any given strain and see the many differences.

  Last modified: 09:12 – Aug 25, 2003  
Quicklink:  http://overgrow.com/growfaq/1561
GrowFAQ © 2000-2004 Overgrow
faq:1561 “What is a phenotype and what does phenotype mean?”