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Post by Drahkk on Feb 16, 2015 22:37:52 GMT -5
Specifically, two of my peppers this year will be Capsicum baccatum and one will be C. chinense. I've never grown anything but C. annuum peppers before, and they cross almost as readily as pepo squash in my garden if I don't isolate varieties. I know the various squash species can hybridize, albeit rarely. Will baccatum, chinense, and annuum peppers cross, or will I be ok as long as I keep the two baccatum varieties separate from each other?
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Post by darrenabbey on Feb 17, 2015 8:02:44 GMT -5
This page has a link to a powerpoint presentation about chiles: www.plantsciences.ucdavis.edu/vc221/pepper/PEPPERrd.htmOn slide 7 there is a diagram illustrating how different pepper species can cross. It suggests you would have to isolate the three different "species" in question. |
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Post by taihaku on Feb 17, 2015 15:51:02 GMT -5
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Post by Drahkk on Feb 17, 2015 17:42:56 GMT -5
I'm looking to save seed both for myself and to share, yes. 3 of this year's varieties were extremely difficult to acquire, and two are my last seeds of the variety. I love the pill casing idea! I've been trying to figure out how to isolate 12 different pepper varieties in my very small garden, and that would let me plant wherever is convenient. Thanks!
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Post by ilex on Feb 18, 2015 11:52:51 GMT -5
I think such crosses are rare, and if you do get any, the result is worth growing. at least, it should be easy to identify. Same species do cross very easily.
If I remember well, pubescens won't cross with any other.
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Post by 12540dumont on Feb 18, 2015 13:38:54 GMT -5
Darren, Great article! I had clicked on one of the links and found myself at the NM State University Chili Center! Oh my, seeds! I think I have gone chili mad this year.
I blame Dar for this sudden onset-chili-madness. It began when I started pepper seeds. I had asked him whether I should plant Tobago Seasoning or Chapeau de Frade. Dar thought the Tabago was wimpy. So there I was at the potting trays and planted them both. That of course led to should I plant Friarello or Jimmy Nardello? I planted them both. From there on it was a slippery slope.
Note to self: C. annuum x C. baccatum = male sterility Now I have to go check to make sure I didn't plant any C. baccatum.
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Post by darrenabbey on Feb 18, 2015 13:42:06 GMT -5
Note to self: C. annuum x C. baccatum = male sterility Now I have to go check to make sure I didn't plant any C. baccatum. Keep in mind that male sterility can be used to help consistently breed F1 hybrid types. This technique can be used by the home-grower as well as the agribusiness giants. It isn't the style I like to go with, but it is an option. |
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Post by 12540dumont on Feb 18, 2015 14:04:30 GMT -5
I consistently root out anything that's sterile. I don't have time to fool around with CMS or hybrids, they don't fit well into my system of trialing, seed saving, growing and sharing.
My Chapeau will have to be sent to segregation. Most of my garden has promiscuous pollination, so I have to separate the sweet from the hots. About 90% of the pepper seeds I have received are not labeled as to species. What a pain to look them each up and hunt for it.
I was just checking my peppers and had zero germ from my Jimmy Nardello. This is my favorite frying pepper. Any one? Can you spare me 6 seeds? See this is what happens when you skip a few years saving pepper seeds. Send me a pm if you have any.
Ferdzy, you know what this means? I'll have to plant all the silk road peppers.
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Post by Drahkk on Feb 19, 2015 19:07:44 GMT -5
Darren, Great article! I had clicked on one of the links and found myself at the NM State University Chili Center! Oh my, seeds! I think I have gone chili mad this year. I blame Dar for this sudden onset-chili-madness. It began when I started pepper seeds. I had asked him whether I should plant Tobago Seasoning or Chapeau de Frade. Dar thought the Tabago was wimpy. So there I was at the potting trays and planted them both. That of course led to should I plant Friarello or Jimmy Nardello? I planted them both. From there on it was a slippery slope. Note to self: C. annuum x C. baccatum = male sterility Now I have to go check to make sure I didn't plant any C. baccatum. You probably didn't. Ají amarillo, Lemon Drop, and the two Peppadews are the only baccatum varieties I know of. Of course, I'm not the most experienced person here... I certainly know the feeling of planting more than you know what to do with! Six different varieties are usually all I can reasonably space out in my little garden, and this year I started twelve. I just couldn't talk myself out of any more. That hybrid sterility has me wondering about one of the varieties I planted. I wonder if it would persist even if crossed back to a fertile variety? |
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Post by darrenabbey on Feb 19, 2015 20:46:57 GMT -5
That hybrid sterility has me wondering about one of the varieties I planted. I wonder if it would persist even if crossed back to a fertile variety? The usual mechanism for male sterility is a cytoplasmic factor, which can persist across generations... essentially leaving you with a female only plant line that requires continuous pollen input from outside. |
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Post by Drahkk on Feb 19, 2015 22:09:10 GMT -5
The first study I found suggests that it's poor pollen viability due to a lack of homologous chromosomes because of the genetic distance between the species, rather than CMS genes.
I guess time will tell. They probably aren't crossed with anything anyway. Then again, at this point I'm still waiting to see if the seeds are even viable...
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Post by darrenabbey on Feb 19, 2015 22:49:54 GMT -5
Interesting. I would think the lack of homologous chromosomes would also interfere with egg formation, rather than just in the pollen.
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Post by Drahkk on Feb 20, 2015 0:43:56 GMT -5
It very well may. In fact, I'd be surprised if it didn't, since both are essentially the same process. I haven't done much research yet, and that first paper mainly tested pollen viability of various interspecies Capsicum crosses. The annuum x baccatum crosses averaged about 36% viability. I found this graphic that suggests that although the diploid number is the same, homology issues may be due to the evolutionary distance between them. It seems to agree with the research article, in that species on the same branch in this picture had high pollen viability, while crosses between species on different branches had lower viability (some exceptionally low).  |
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Post by darrenabbey on Feb 20, 2015 1:51:06 GMT -5
That is a really nice diagram. Where did it come from?
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Post by Drahkk on Feb 20, 2015 2:10:57 GMT -5
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