HiPlainDrftr
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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0133292
Anyone see this yet? Changes the game a little.
Its basically saying that most reported Sativa% / Indica% is bullshit. Considering Greenhouse Seeds and Paradise Seeds provided material for this study, I think its pretty damn significant.
"We found that in 6 of 17 comparisons (35%), samples were more genetically similar to samples with different names than to samples with identical names. We conclude that the genetic identity of a marijuana strain cannot be reliably inferred by its name or by its reported ancestry."
It makes the case with Jamacian Lambs Bread, which has always been labelled as Sativa. If you've ever grown it, you've probably doubted it too.
"For example we found that Jamaican Lambs Bread (100% reported C. sativa) was nearly identical (IBS = 0.98) to a reported 100% C. indica strain from Afghanistan. Sample mix-up cannot be excluded as a potential reason for these discrepancies, but a similar level of misclassification was found in strains obtained from Dutch coffee shops based on chemical composition [10]. The inaccuracy of reported ancestry in marijuana likely stems from the predominantly clandestine nature of Cannabis growing and breeding over the past century. Recognizing this, marijuana strains sold for medical use are often referred to as Sativa or Indica “dominant” to describe their morphological characteristics and therapeutic effects [10]. Our results suggest that the reported ancestry of some of the most common marijuana strains only partially captures their true ancestry."
It also says-
Hemp varieties have more alleles in common with C. Indica than C. Sativa-
"Hemp is consistently classified as C. sativa in previously published literature [11, 12], and the prevailing assumption has been that varieties used for fibre and seed production are derived from C. sativa [1]. Our results are incompatible with this proposition: a marijuana strain’s genetic distance to hemp is negatively correlated with its reported C. sativa ancestry"
I'd really like to hear others take on this.
Anyone see this yet? Changes the game a little.
Its basically saying that most reported Sativa% / Indica% is bullshit. Considering Greenhouse Seeds and Paradise Seeds provided material for this study, I think its pretty damn significant.
"We found that in 6 of 17 comparisons (35%), samples were more genetically similar to samples with different names than to samples with identical names. We conclude that the genetic identity of a marijuana strain cannot be reliably inferred by its name or by its reported ancestry."
It makes the case with Jamacian Lambs Bread, which has always been labelled as Sativa. If you've ever grown it, you've probably doubted it too.
"For example we found that Jamaican Lambs Bread (100% reported C. sativa) was nearly identical (IBS = 0.98) to a reported 100% C. indica strain from Afghanistan. Sample mix-up cannot be excluded as a potential reason for these discrepancies, but a similar level of misclassification was found in strains obtained from Dutch coffee shops based on chemical composition [10]. The inaccuracy of reported ancestry in marijuana likely stems from the predominantly clandestine nature of Cannabis growing and breeding over the past century. Recognizing this, marijuana strains sold for medical use are often referred to as Sativa or Indica “dominant” to describe their morphological characteristics and therapeutic effects [10]. Our results suggest that the reported ancestry of some of the most common marijuana strains only partially captures their true ancestry."
It also says-
Hemp varieties have more alleles in common with C. Indica than C. Sativa-
"Hemp is consistently classified as C. sativa in previously published literature [11, 12], and the prevailing assumption has been that varieties used for fibre and seed production are derived from C. sativa [1]. Our results are incompatible with this proposition: a marijuana strain’s genetic distance to hemp is negatively correlated with its reported C. sativa ancestry"
I'd really like to hear others take on this.
