spherical seeds in Ipomoea nil

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evr Toronto, ON(Zone 5b) Oct 17, 2008

Again, according to a translated website http://translate.google.com/translate?u=http://mg.biology.kyushu-u.ac.jp/&hl=en&ie=UTF-8&sl=ja&tl=en, there is a genotype expression for spherical seeds of I. nil. sph sph called spheloid. It's defined as "small seed, brown seed coat". Just comparing my seeds, there are ones that are not "boat-shaped" and somewhat circular and more like half a circled-shaped (bottom pic: top row illustrate boat-shaped seeds, bottom row, half a circle) Are these spheloids? or is it just the way they're positioned in the pod? Are there any differences in relation to the size of the seeds and their growth/vigour/leaf size/blooms?

Would be nice if somebody could help me or have your input =D

Eliz

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dany12 szarvas, Hungary Oct 17, 2008

sometime there is only 1 seed in the pod , big and roundish
Dany

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RON_CONVOLVULACEAE Netcong, NJ(Zone 5b) Oct 17, 2008

I have not seen spherical seeds that I could say are the result of any specific gene for producing spherical seeds...
Dany has already mentioned that if only one seed is produced in a pod,that the seed thus produced is usually rounded due to the absence of any other seed impinging upon it...
The seedpods with only 2 seeds in them often produce seeds with a large flat surface...seedpods with the largest number of seeds produce seeds which are smaller and very wedge shaped...

The larger seeds have larger embryos and produce larger seedlings and these larger seedlings often have a survival advantage over smaller seedlings,but (for reasons unknown) many times smaller seeds can carry for unusual colors that may not be carried in the larger seeds...

There is *sometimes* a bloom size correlation in relation to the size of the seeds produced...


Ron

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