…ok…anyway…
Lets see this from a home breeders perspective. It would be better to let the mother be the bush which can handle alot of sun, CO2, nutes. So what im saying is that If you have 2 plants that you BLAST 5000w at and you got a high CO2 environment. If one plant preform better in that environment, it MIGHT be a sign of more efficient mDNA. If its F1 children is also able to thrive like their mother. That is a sign of strong mDNA. This is completely bro science at this stage, but as far of my understanding this MIGHT be true. 
Edit: at 100w scrog, you wouldnt notice a difference between the mDNA test subjects. What im geting at is that there are a difference in which plant is the mother and which is the father. But it might not be visable to you, its only visable in extreme environments since extreme environments pressure the genetics to its limits, and The more efficient mitochondria, the more respiration and The more energi can be produced to the cell.
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Are you sure though? If the plant sex determination is not XY based but is X-to-Autosome, then negating the male IS negating some genes there… I’m also finding that the Y chromosome seems to be smaller than the X chromosome for the majority of species. I can’t actually find one where its larger. X seems to control most of the process, with Y there to regulate.
Have you ever looked at fem plants and reg plants together? Never thought something just seemed off on the fem plants even though they look fine?
Here’s some random info and links from my previous search… Sounds like we really just need to do some genetic work on the cannabis plant in order to move on from this particular question 
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Sex inheritance and sex chromosomes in plants are strikingly similar to those in animals. The majority of plants studied have heterozygous males, or, when the chromosomes are visibly different (perhaps half of plants that have separate sexes, see Westergaard, 1958), male heterogamety (XY males, XX females).
…
Self fertilisation of such plants in several species has provided genetic evidence that males are heterozygous. As will be explained below, the male genotype must include a dominant suppressor of femaleness (Su F). On selfing, a 3:1 ratio of males to females is expected if Su F*/Su* F is viable, or 2:1 if the Y chromosome is genetically degenerated and this genotype is inviable. Each of these ratios has been found (Westergaard, 1958; Testolin et al, 1995). Some plant Y chromosomes are therefore at least partially genetically degenerate.
https://www.nature.com/articles/6800016
There are three functionally different Y chromosome regions (see Figure 2), the Su F region, and two regions containing factors controlling early and late anther development (Westergaard, 1958; Grant et al, 1994; Farbos et al, 1999; Lardon et al, 1999). In these species, X and Y pairing in male meiosis is confined to the tips (Westergaard, 1958; Parker, 1990; Lardon et al, 1999), and recombination is absent for most of the Y chromosome.
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The first step toward sex chromosome evolution is the occurrence of male sterile or female sterile mutations leading to the development of unisexual flowers. Such mutations occur frequently and repeatedly in plant species, as demonstrated by the presence of unisexual species in 75% of angiosperm families and numerous male sterile mutants in domesticated crop plants (Yampolsky and Yampolsky, 1922; Renner and Ricklefs, 1995).
https://bsapubs.onlinelibrary.wiley.com/doi/10.3732/ajb.94.2.141
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Hop (H. lupulus var. lupulus ) is normally diploid (2n = 2x = 20) with nine autosomal bivalents and two heteromorphic sex chromosomes. Female plants have a pair of X chromosomes, while male plants have an XY pair with the Y chromosome being smaller8,17,18,19. In all other species of the genus Humulus , such as H. lupulus var. cordifolius , H. japonicus , H. yunnanensis and H. acetosa , the sex is expressed based on a multi-sex chromosome system20,21,22. Expression of sex phenotype in hop is also influenced by the X: autosomes ratio8, indicating that the genes controlling pollen development are in the sex determining region and structural genes located on autosomes17,21. In hop, monoecious plants occasionally occur, especially among progeny of specific crosses. Škof et al .23 revealed that a high percentage of monoecious hop plants were triploids. Experimental work of this study focusses on diploid germplasm.
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XX is 1636Mbp and XY is 1683 Mbp. So the Y is larger then the X.
https://www.jstage.jst.go.jp/article/cytologia1929/63/4/63_4_459/_article
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Nice! Ty for the link too!
I know the size is highly dependent on the species so nice seeing a paper that’s cannabis specific.
Next question is, is that Y heterozygous or homozygous 
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As far as I know its hetero. But i would love If it was homo. That would make reversing males more viable for predicting outcome 
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Oh, I think it is homo! In that same paper:
“We detected differences in the DNA content between female and male C. sativa. The differences in the nuclear DNA content was approximately 47 Mbp (Table 1). This value occupies about
2.8% of the total genome size of the male plants and could correspond to the large long arm of the
Y chromosome. In another dioecious plant, Silene latifolia, there is a 2 to 5% difference in the nuclear DNA content between females and males (Costich et al. 1991, Vagera et al. 1994, DoleZel et
al. 1995). Differences might be due to the large size of the Y chromosome.”
That right there sounds like X and Y are the same sans that 47Mbp difference
Edit: Hmm on further thought, I’m not sure. That 47mbp is likely specifically from the extended long arm of the Y chromosome, they say nothing about the genes themselves… Need more research.
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Happens alot in science: We know, what we learned., until we re-learn, what we knew!..
Well ill dig abit but atm i cant find anything about pollen passning mDNA. Sperm and pollen is VERY different. So i do want to find something specific for plants. Ill get back to you…
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Hmm… This is beyond my knowledge, but it would be interesting to know for sure. In my experience fathers are the weakest link in locking traits in and a homo Y would explain that experience. Then its the wild west, most of Times, what get passed to the next generation from the father.
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Only if those (male gametes) came out wet… 
All is good and well.
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HEY!!
I wasn’t finished reading that…
It was really good for a first draft… 
Cheers
G
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aw its all gone now 
I was gonna say, if you make an f1 with a potent plant and a terpy plant and got less potent less terpy F1’s (of course), you just need to go to F2 to find that potent+terpy plant you wanted/needed.
BX’s are the same deal, backcross to homogenize the genes. If you f2 a BX line it should open it back up a bit. Obviously the more bx the less variation… I know Tony has done some work on this and reported on the results
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First damn thing i do when i find something i like is backcross, lol…i dont even flinch, get that stuff locked up and get going on improving it.
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Smoke something…. It’s good for you.
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No it’s just to get the uniform bud structure and veg structure i want locked in. I don’t smoke something and then create the plant.
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I build my high first and then build the plant around it.
I don’t care how nice a plant looks when it doesn’t smoke worth a flip. I will not use that type of plant for structure when I can used a better smoking plant to do the same thing.
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You dont come across many runts and oddballs huh?
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I grow indoor so what you consider a runt would be something totally different than what I consider a runt.
I have 2 blueberries plants. One is sitting on a 5 gallon bucket to get in the sweet spot of the light. Would that be a runt?