Lycopersicon glandulosum Peruvian Wild Tomato

[Stepheninky]

Was wondering since this variety is not self compatible, is there any special tips or tricks to get a cross to take?


This species stigmas exert well beyond the anther cone and are self-incompatible. They are exclusively outbreeders.
Crossing this species with the cultivated tomato, L. esculentum, is extremely difficult due to several barriers which exist. The stigma of L. glandulosum will not accept pollen from the cultivated tomato and almost always leads to the abortion of the flower. The reciprocal cross, pollen from L. glandulosum applied to the stigma of L. esculentum, can result in the formation of fruit but few seeds are viable. However, some of the seeds do contain embryos of sufficient size to facilitate embryo rescue.

So if I am reading that right to make a cross I will use the Peruvian Wild Tomato as the male only and use the pollen to try and cross it to the female plant?

If so, what type of crosses would people be interested in seeing? Also if I can get the crosses to take would any one be interested in forming a project out of it and doing grow outs?

I will go ahead and list some of the traits that might be expected:

As far as disease resistance goes:
Tomato spotted wilt virus - Lots of research projects documenting strong resistance to TSWV
early blight
leaf mold
fusarium wilt
septoria leaf spot
nematodes

It is also reported to have some insect resistances but most of that research is in South American countries so not sure how much of that would apply.

Forgot to add that drought resistance and also some frost resistance has been noted in some research I have read but the results were inconsistent.

F1 hybrid with a red tomato as the parent from what I have read usually produces green to greenish yellow fruits and some yellow and orange fruits, F2 green, yellows, oranges and possible red fruit. F3 is were the purple or bluish trait tends to show up.

Size wise the f1 fruits when parented by a commercial type tomato tend to be larger than the Wild Peruvian fruit. In F2 -F3 generations the fruit size and shape will vary.

Since the Wild Peruvian has to be used as the male parent a successful cross will be indicated by the wild type plant traits and growth habit its not in till further grow outs that cultivated tomato characteristics will appear. (note that selection of larger darker seeds will give more of the cultivated tomato properties)

For my possible grow outs resistance traits will be hard to realistically select for, So I will be using different factors: plant characteristics, Fruit color, size and shape leaf size shape, general health characteristics Self compatibility (The ability of the plants to self pollinate{This may require SIB crossing at the F1/ F2 phase}) Course taste will also be a factor as well.

Other possibilities for the crosses would be an OP root stock suitable for grafting at a reduced cost vs the expensive hybrid types on the market.