A bit of text from DJ Short:
"Three subspecies
It is useful to agree, at least in theory, that there are three separate subspecies of the genus Cannabis – Sativa, Indica and Ruderalis.
Cannabis Sativa is the equatorial variety found primarily around 30 degrees latitude North or South. Sativa generally grow tall, from seven to thirty feet, have many long branches, narrower leaflets, and mature slowly.
Cannabis Indica varieties generally inhabit the areas between 30-50 degrees North or South latitude. Indica are generally much shorter than Sativa, only about three to five feet tall. They have fewer and shorter branches than Sativa, the longer of which are lower on the plant, with much wider leaflets. They also mature earlier and more rapidly than Sativa.
Cannabis Ruderalis grow naturally primarily past 50 degrees north latitude (the Siberian steppes). Ruderalis are the shortest, least bushy, and fastest maturing of the three.
The end of the sweet spots
Prior to the late 1970's, virtually all commercially available cannabis products came from the great outdoors. Many of these varieties had been grown in their particular region since antiquity – not since the advent of sailing had a greater diversification and distribution of the herb occurred.
Most cannabis available was also very well acclimated to its particular region of origin. Certain places tended to produce very unique and desirable types of herb that were renowned to each region. I like to refer to these high-quality cannabis producing areas as "sweet spots." The products coming out of these sweet spots during this era were among the finest herbs ever available.
A series of phenomena occurred in the late 1970's and early 80's that has since revolutionized the cannabis industry. This series included the triad of sinsemilla, High Intensity Discharge (HID) lighting, and the introduction of Indica genetics, coupled with draconian herb laws that drove the industry far underground. Never before in human history was so much genetic diversity of cannabis grown in such generic, indoor conditions. The results of this phenomenon have wreaked havoc on the cannabis gene pool.
The road to blandness
As Indica, sinsemilla and HID lighting became predominant, it became apparent that Sativa varieties were very difficult to coax commercial amounts of sinsemilla herb from indoors. The fast maturing, dense bud structure of the easy-to-grow Indica soon dominated the indoor grow scene.
Another factor contributing to the desirability of the indoor Indica was its truebreeding "dioecious" nature, meaning that individual plants tend to be male or female only, but not both. In contrast, many Sativa strains show hermaphroditic tendencies indoors, with male and female flowers on the same plant. (It is my opinion that wild Sativa strains of cannabis are primarily truebreeding hermaphroditic varieties.)
As outdoor production diminished due to intolerant laws and the drug war, indoor production of Indica phenotypes became the staple of the commercial indoor grower. The road to generic blandness had begun.
Although some Sativa/Indica crosses matched some of the Sativa flavor and head high with the Indica bud structure, this desirability would only last for a few generations of breeding. Unless a person is breeding for a very specific trait, crosses seven generations and beyond the original P1 Indica/Sativa cross lose much of their original charm and desirability. Cloning, however, helps to extend a given plant's potential.
Ruderalis: myth and misnomer
As indoor growers attempted to improve their genetic lines via breeding, another interesting phenomenon occurred: Ruderalis. Although there is a wild variety identified as Ruderalis in Russia ("Ruderalis" is supposedly Russian for "by the side of the road") that grows very short and matures very fast, I seriously doubt the rumor that someone actually went to Russia to collect seeds of this variety sometime in the past. Or, if someone actually did go all the way to Russia to find, collect and smuggle "rudy" seeds, I do feel sorry for their waste of time. They could have gotten the same worthless thing from Minnesota, Saskatchewan or Manitoba with much less hassle.
The North American Ruderalis probably originated as follows: After the Indica varieties arrived in the US and became incorporated into the gene pool, many breeders began to cross the earliest maturing individuals with each other in hopes of shortening the maturation cycle.
It would only take a few generations for the ugly Rudy phenotypes to begin expressing themselves. By ugly, I am referring to a strong lack of potency and/or desirability. I know, I was once guilty of the practice myself. It did not take me long to realize that this was a huge mistake in regard to the quality and potency of the future generations' finished product, and all subsequent breeding along this line was ceased.
Many of these manipulated rudies were released on the open market between 1981 and 1986. It was shortly after this period that the grow journals of the era (Sinsemilla Tips and High Times) ran articles about the possibility of a new wonder variety for indoor grows: fast blooming Ruderalis. Rumor had spread to myth and misnomer. Therefore, it may be more appropriate to say that the Ruderalis phenotype was coaxed from Indica genetics, via the indoor breeding environment.
The same applies to many of the Indica dominant varieties available today. Breeders selecting for early, fast flowering or fast growth often miss out on some of the finer and more subtle characteristics available from crossing certain genotypes. My advice to breeders is to wait until the finished product is suitably tested before coming to any conclusions regarding desirable candidates for future breeding consideration."
end
Maybe you guys don't know this but you do not need any 'special' strain of MJ to flower without vegging. All MJ species and strains will veg until mature, even under 12/12...usuallly in 3-4 weeks and then they will flower. Germ whatever beans you got in flower and you will get the same thing...little plants.