Registered: Jan 2004
Posts: 940

Anyone know the percent of natural inbreeding that occurs in cannabis. Is it like corn 90% outcrossed 10% inbreeding? I wasn't sure because some cannabis is intersexed (equatorial sativas i think) but am I even thinking about this right. Do i even need to take into account the intersexed individuals or do I need to know how the pollen blows and how far it naturally gets. Anyone wanna help me out? I'd appreciate it.

Registered: Jun 2004
Posts: 1697

high,

Canabis naturaly comes in 2 flavors: indica & sativa. The sativa is south american and the indica is from the himalaya's. (with some odd exceptions)

Depending on what part of the world your living you will have either a satvia dominant or a indica dominant type.

Male pollen travels about 50-100 mtrs depending on conditions.

The canabis is cultivated by crossing indica with sativa. If you want a true sativa or indica pick a strain from either of those. By inbreeding you wil get closer to the orginal plant. For that you will have to have some expirence with growing the strain so you will get familiar with its apperance during the whole live cycle.

HippieGurl

Overgrows Green Wave 2006 G6 #14 Posted by DSM IV 304.30 ...be careful the mouse, the G6 are extremely evil band of lesbian bull dykes with a severe case of penis envy....they are skinning their victems and trying to make "man suits"

Registered: Jun 2004
Posts: 1697

That would explain my question about the natural found canabis in Russia....

K+ for that one

Overgrows Green Wave 2006 G6 #14 Posted by DSM IV 304.30 ...be careful the mouse, the G6 are extremely evil band of lesbian bull dykes with a severe case of penis envy....they are skinning their victems and trying to make "man suits"

Registered: Jan 2001
Posts: 1314
Overgrow Moderator

You tell us gitt, here is a list of traits of both outcrossers and inbreeders; not all traits apply to all species.


Trait ============== OUTBREEDER=========== INBREEDER


Flower #-------------------- many flowers----------------- few flowers

Flower size ------------------ large flowers--------------- small flowers

Flower color------------------ bright colors--------------- mono-colored

Scent------------------------- scented flowers------------ unscented flowers

Anther position ------- anthers far from stigma---- anthers close to stigma

Pollen # ------------ many pollen grains----------- fewer pollen grains

Style position----- style exserted from flower ------style included in flower

Stigma ------ stigmatic area well-defined---- stigmatic area poorly-defined




.... that justification to the margins in a real pita!

Last edited by Chimera on June 21st, 2004 at 12:59 PM

Registered: Sep 2001
Posts: 8460
Overgrow Site Mod

Err... Cough.

>> HippieGurl

First , there are some very niiiice pure Sat landraces (cultivars) in Asia (Nepalese, Cambodian, Indian, Thai, Lao, Bengali, you name it...).

Second, cannabis is NOT "cultivated by crossing indica and sativa varieties". Some commercial strains are indeed indica/sativa hybrids (in various proportions), but you can also find pure indica and pure sativa strains.

The ruderalis ssp is probably an indica type that evolved differently because of very short seasons, but nobody knows for sure.

Finally, from the botanist's point of view, and despite the fancy names, there's only ONE species: Cannabis sativa L.

>> GreenintheThumbs

Some landraces/cultivars indeed present hermaphroditic tendencies, but this is accidental. The norm is dioecious plants in Cannabis sativa (distinct male and female plants). Also, hermaphroditic lines revert to straight dioecious plants after a few generations.

Last edited by Mandragora on June 21st, 2004 at 11:58 AM

Registered: Jan 2001
Posts: 1314
Overgrow Moderator

The norm is dioecious plants in Cannabis sativa (distinct male and female plants). Also, hermaphroditic lines revert to straight dioecious plants after a few generations.

>>> That is actually not true, monoecious vs dioecious is a matter of selection, nothing more.

-Chimera

Registered: Sep 2001
Posts: 8460
Overgrow Site Mod

Yes, it's a matter of selection. If you don't select monoecious plants only, you'll get dioecious plants again with the subsequent generations. How long did it take to create modern days Hemp cultivars (monoecious), then, and why did the breeders ever bother?

Registered: Jan 2004
Posts: 940

Yeah after reading more Allard I found out. It mentioned hemp as an outcrosser and that's what I figured. Your description Chimera matches it. So here's a paragraph from Allard "The most obvious of the outbreeding devices that require genetic diversity among individuals is, of course, dioecy (staminate and pistillate flowers borne on different individuals). Diocy is clearly an outbreeding device because, when absolute, it obviously prohibits selfing, the most intensive form of inbreedings; however, even perfect dioecy does not prohibit full-sib or other less sever forms of inbreeding. Dioecy, the great mating system of animals, is uncommon in higher plants, perhaps because it is wasteful of gametes in nonmobile organisms. Among cultivated plants some of the most important dioecious species are date palms, castor beans, hemp, hops, spinach, papays, and asparagus. Some individuals of these species produce hermaphroditic as well as staminate and pistallate flowers, and when this the case, at least some selfing is possible."

So as I read I should consentrate on Breeding Hybrid Varieties of Outcrossing Plants while being aware that some levels of selfing will function and vegatative propagation is obviously suggested for mainting elite individuals. Thanks folks and I'm sorry I couldn't be here often enough to participate in my own thread untill now. Damn broken computer. Peace and thanks again.