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Post by Andre on Jul 7, 2013 2:51:47 GMT -5
In this very interesting document m.amjbot.org/content/95/10/1240.full#T3 we can see dendrograms for the main corn families (Mexican, tropical, Andean, SD and NF). Does anyone knows where to find a dendrogram of main famous corn populations ? That could help to improve our breeding tests ? |
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Post by Deleted on Jul 7, 2013 8:23:12 GMT -5
Andre, are you asking what maize collections historically contributed the most to modern improved corns, or what populations are the most employed by breeders now? Je suis confus. <  |
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Post by Andre on Jul 7, 2013 13:33:03 GMT -5
Both of your questions are interesting but it´s not my question. I'd like to find a dendrogram representing the genetic distance between famous corn populations. For example, let´s say I have 4 populations. I may be interested by knowing which one are more genetically distant from the others to use at the maximum the heterosis effect.
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Post by legume on Jul 7, 2013 18:18:19 GMT -5
This is a lot of fun,
Genetic distance is not often predictive of heterosis.
You obviously will not maximize heterosis in a very narrow cross...but the widest crosses do not nessassarrily result in the greatest level of heterosis.
There is still allot to be gained by understanding relationships between your populations, and these dendrograms are a nice way to visualize them.
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Post by Deleted on Jul 7, 2013 21:41:49 GMT -5
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Post by Andre on Jul 8, 2013 6:03:24 GMT -5
Thank you bjargakarlinn ! This is noted for next year ! Here's an example of the use of such informations. In this document, we can see that Lancaster Sure Cropper (Tx303) is very close to the french population Lacaune so there is 2 conclusions : 1/ No need to grow these two populations as they are so close 2/ One is probably made of the other (but we don't know in which direction) So if you know any other dendrogram like the one located page 7 on the document I quote, please let me know. |
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Post by Deleted on Jul 8, 2013 7:23:46 GMT -5
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Post by Andre on Jul 8, 2013 9:12:41 GMT -5
Suwan 1 also combines very well with Tuxpeno I think the Thaï composite Suwan 1 is too tropical for an European climate. BS 29 (Developed from Suwan 1 by five cycles of mass selection for adaptation to temperate areas) or Suwan 3 seems more adapted. |
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Post by Andre on Jul 11, 2013 2:09:37 GMT -5
Here's the kind of document I'm looking for (even is this one is not really a dendrogram because it's not genetically documented). It shows the big influence of Golden Bantam on many sweet corns. Source : "Specialty corns : Second edition" - R. Hallauer - 2001  |
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Post by mayz on Jul 11, 2013 4:33:57 GMT -5
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Post by Andre on Jul 11, 2013 4:47:35 GMT -5
Thank you Mayz ! That's exactly what I was looking for !
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Post by Dewdrop on Dec 19, 2021 4:59:41 GMT -5
Here's the kind of document I'm looking for (even is this one is not really a dendrogram because it's not genetically documented). It shows the big influence of Golden Bantam on many sweet corns. Source : "Specialty corns : Second edition" - R. Hallauer - 2001 <button disabled="" class="c-attachment-insert--linked o-btn--sm">Attachment Deleted</button> Thank-you for sharing this. How or where can I find more of these 'family trees' of vegetables? I'm also interested in snap peas and spaghetti squash. |
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