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It is said it does. Perhaps those who have direct experience can answer.

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Seems like a simple question, but it isn't.

Influence on aspects of physiology that depend on mitochondria, chloroplasts and other plastids, all of which come only from the mother line and have some genes that are independent of the chromosomes... certainly. That would be efficiency of photosynthesis, energy processing, energy storage as starch, optimal light and temperature levels for those processes - things that effect growth and vigor. Intensity and distribution of green and yellow pigments too, to some extent. But in all cases those things depend on interaction with combinations of chromosomal genes too, and could be good bad or neutral.

For most other characteristics, whichever parent happens to have the most homozygous dominant genes that have an effect on the characteristics of interest will seem to have more influence. Obviously that can go either way.

I doubt anyone can offer actual evidence for a general case answer otherwise. Even with many years of experience, a general impression is too easily skewed by a few dramatic but statistically insignificant examples. And if there is a trend in certain cases, is it universally the same for diverse characteristics like flower color, petal length, petal width, flower count, stem strength, scent, flower texture, bloom season, etc.? In different breeding lines?
 

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