Post by landarc on Mar 9, 2010 14:14:14 GMT -5
(Copied from Spudleafwillie information)
Sorellina received the RGP seed from me several years ago.
I have grown Roughwood Golden Plum from seed that its originator, William Woys Weaver gave me in the early nineties. RGP is a deliberate cross between San Marzano (RL) and Yellow Brandywine (PL) that produces loads of tasty bright orange double heart shaped fruits on potato leaf vines. It is a potato leaf cultivar, hence my interest in growing it since I collect and grow potato leaved varieties.
I received my seed many years ago in the F7 generation of seed and am presently growing the F18 version. One would think a variety would be stable after the F15 generation. But boy was i surprised in that year's grow out of 6 plants of RGP that one of the plants had thrown deep red double heart shaped fruits rather than the normal orange colored ones expected.
There were no red paste tomatoes grown within a 2 mile radius of my garden and the RGP plants were isolated by 25 feet from any other varieties so accidental cross pollination was ruled out. The only plausible explanation for the fruit color change was a genetic throwback in the F16 generation to the red color of the San Marzano parent some 15 generations earlier.
I have saved seed from this red PL variant and named it Throwback Potato Leaf Plum. It appears stable and I'm now growing the F5 with no change in leaf form or fruit color. It is the only genetic mutation I have ever seen in over sixty years of growing tomatoes.
Sorellina received the RGP seed from me several years ago.
I have grown Roughwood Golden Plum from seed that its originator, William Woys Weaver gave me in the early nineties. RGP is a deliberate cross between San Marzano (RL) and Yellow Brandywine (PL) that produces loads of tasty bright orange double heart shaped fruits on potato leaf vines. It is a potato leaf cultivar, hence my interest in growing it since I collect and grow potato leaved varieties.
I received my seed many years ago in the F7 generation of seed and am presently growing the F18 version. One would think a variety would be stable after the F15 generation. But boy was i surprised in that year's grow out of 6 plants of RGP that one of the plants had thrown deep red double heart shaped fruits rather than the normal orange colored ones expected.
There were no red paste tomatoes grown within a 2 mile radius of my garden and the RGP plants were isolated by 25 feet from any other varieties so accidental cross pollination was ruled out. The only plausible explanation for the fruit color change was a genetic throwback in the F16 generation to the red color of the San Marzano parent some 15 generations earlier.
I have saved seed from this red PL variant and named it Throwback Potato Leaf Plum. It appears stable and I'm now growing the F5 with no change in leaf form or fruit color. It is the only genetic mutation I have ever seen in over sixty years of growing tomatoes.