Question about breeding

tgplp · March 25, 2012

Hi everyone! Quick question. Say I crossed green zebra and lime green salad, looking for a dwarf with green zebra fruit. At the third generation, I had mostly dwarf plants with green fruits that were slightly striped. Would I want to cross the f3 plants with green zebra again, to try and bring more of green zebra's characteristics back into play? Has anyone done this?

Taryn

ChrisK · March 25, 2012

Backcrossing is a common breeding approach to do exactly what you say. That new F1 generation would be the BC1 generation.

See here for a description:

http://mcclintock.generationcp.org/i...102&Itemid=124

Quote:

Originally Posted by tgplp

Hi everyone! Quick question. Say I crossed green zebra and lime green salad, looking for a dwarf with green zebra fruit. At the third generation, I had mostly dwarf plants with green fruits that were slightly striped. Would I want to cross the f3 plants with green zebra again, to try and bring more of green zebra's characteristics back into play? Has anyone done this?

Taryn

tgplp · March 25, 2012

Thanks Chris! Maybe we could do this for our micro dwarf project. By the way, yesterday I transplanted my Micro Toms, Mohammeds, and Hahms Gelbe Topftomates to bigger peat pots. In another month or so I can put them in my hoophouse. How are your micro dwarfs doing?

Taryn

ChrisK · March 25, 2012

It's been so warm here I'm ready to dig in the soil! But I know there is a chance for colder weather to return. Mid April is when I will plant out. All 40 or so varieties are in 2" pots indoors under lights.

We should start a set of threads for all the crosses we succeed on when the time comes. I'm thinking we could get multiple generations in a season.

Chris

Quote:

Originally Posted by tgplp

Thanks Chris! Maybe we could do this for our micro dwarf project. By the way, yesterday I transplanted my Micro Toms, Mohammeds, and Hahms Gelbe Topftomates to bigger peat pots. In another month or so I can put them in my hoophouse. How are your micro dwarfs doing?

Taryn

frogsleap farm · March 26, 2012

The stripes in GZ are due to the gs (green stripe) gene. This line should be segregating for both dwarf habit and stripes. The heterozygous plant +/gs will have faint striping, as you describe here. One in four of the progeny in the next generation will be homozygous for gs, and show the prominent striping present in the GZ parent. There is no need to backcross unless you are trying to capture something else from the GZ parent.

**Tom Wagner** · March 27, 2012

I made GREEN ZEBRA crosses to GREEN ELF (LIME GREEN SALAD) many years ago. I think many of them are from the late 1980's. Too busy to find the seed, but I remember having them in Bakersfield, however dwarfs were not popular then and especially not in that hot climate.

I remember stabilizing the crosses with one gallon containers...and selected a single fruit per clone....with the heat stress...even a single fruit was appreciated. I remember an assortment of fruit sizes...and yes, green flesh and stripes.

March 25, 2012	#1
tgplp Tomatovillian™ Join Date: Jan 2011 Location: Pacific North West, zone 8a Posts: 510	Question about breeding Hi everyone! Quick question. Say I crossed green zebra and lime green salad, looking for a dwarf with green zebra fruit. At the third generation, I had mostly dwarf plants with green fruits that were slightly striped. Would I want to cross the f3 plants with green zebra again, to try and bring more of green zebra's characteristics back into play? Has anyone done this? Taryn

March 26, 2012	#5
frogsleap farm Tomatovillian™ Join Date: Nov 2008 Location: Minnesota Posts: 568	The stripes in GZ are due to the gs (green stripe) gene. This line should be segregating for both dwarf habit and stripes. The heterozygous plant +/gs will have faint striping, as you describe here. One in four of the progeny in the next generation will be homozygous for gs, and show the prominent striping present in the GZ parent. There is no need to backcross unless you are trying to capture something else from the GZ parent.

March 27, 2012	#6
Tom Wagner Crosstalk™ Forum Moderator Join Date: Aug 2006 Location: 8407 18th Ave West 7-203 Everett, Washington 98204 Posts: 1,157	I made GREEN ZEBRA crosses to GREEN ELF (LIME GREEN SALAD) many years ago. I think many of them are from the late 1980's. Too busy to find the seed, but I remember having them in Bakersfield, however dwarfs were not popular then and especially not in that hot climate. I remember stabilizing the crosses with one gallon containers...and selected a single fruit per clone....with the heat stress...even a single fruit was appreciated. I remember an assortment of fruit sizes...and yes, green flesh and stripes.