Quote:
Originally Posted by TheLoud
Thanks for the laugh, guys.
Over breakfast, I followed the sticky thread in this forum called "Useful Links" to this page:
http://tgrc.ucdavis.edu/Genes.html
and scrolled down to the alphabet to P, where I found 2 genes for parthenocarpy, both recessive. Either one would do. So, if you cross a parthenocarpic variety to a normal, your F2 will segregate 3:1 normal to parthenocarpic. This would be a bit labor-intensive to screen for, as on each F2 plant, you'd want to remove anthers from some flower buds and bag them, to make sure they don't get any pollen. Then weed out the 3/4 of the plants that don't set fruit inside their bags.
If anyone feels like paying me $600 for this information, feel free. |
There is a fair bit of information available for free if you look for it.
Even though most research articles are pay per view, you can get a lot from a well written abstract.
here's one that might interest you, about determining parthenocarpy in the F2:
http://www.sciencedirect.com/science/article/pii/0304423887900112
This is what I found so far on parthenocarpy:
There may be more than the three established QTL's involved in parthenocarpy
http://www.ncbi.nlm.nih.gov/pubmed/18231773 which is good to know in case you need to work around linkages or pleiotroic traits.
There's some documentation of the genes involved in specific parthenocarpic cultivars or lines:
cultivar Nadja: parthenocarpy due to a single recessive gene:
http://www.springerlink.com/content/j46459731p800218/
cultivar Severianin : two recessive genes
http://www.springerlink.com/content/v272m3443w220t17/
in line RP 75/59: three recessive genes. This one also identified linkages between two of the genes: one with diageotropica (dgt) and the other with yellow verescent (yv).
http://www.springerlink.com/content/v67u238260nx4548/
There's a full text available of some work with Sevarianin here:
http://www.plantphysiol.org/content/122/2/471.full
Sub-Arctic Plenty is another cultivar that's mentioned as parthenocarpic, but I didn't manage to find the paper or abstract that discusses the genes involved.
I've never grown a parthenocarpic tomato. I think I'm more interested in varieties that produce fruit
and seed reliably in spite of the short season and adverse conditions. I reckon a parthenocarpic might decide not to produce any seed for me here at all!
