|
|
Post by galina on Apr 26, 2015 3:20:10 GMT -5
Got it now - off to read and enjoy  Thank you |
|
|
|
Post by keen101 (Biolumo / Andrew B.) on Apr 26, 2015 16:15:41 GMT -5
Nice web page... I'll go ahead and throw a wrinkle into it... At least with the yellow podded pea that I started with, AA was present in the yellow podded peas, as demonstrated by them having purple flowers. The three genes responsible for magenta coloring in the purple podded peas are all dominant. The pea variety that I started out with was approximately homozygous for all three magenta color traits. Therefore in my project every F1 plant exhibited purple pods. Well, that sure makes for a nice and easy cross. Well done! |
|
|
|
Post by templeton on May 6, 2015 23:20:15 GMT -5
I've just been rereading the JIC database, and noted a couple of genes for purple striations on the pods,and others for purple stripes along the pod edge. Some of these must be mixed up in my peas.
Also noted there's a gene for asymetric lobe development in the leaflets - this is what is showing up in my yellow semi-leafless trials...I must have a closer look tonight.
An exciting development for me - I've finally got to contact someone in the field crops gene bank in Horsham, Australia. This holds a huge repository of genetic material in favas, lentils, peas, barley, chickpeas and all sorts of other stuff - freely available even to amateur breeders! I have tried to get in touch in the past, but never struck a sympathetic ear.
Unfortunately their website isn't up yet, but I've emailed through my request, and we'll see what they have - at last, I might get access to fasciation, pink and red and yellow flowers, and all the disease resistance genes - most exciting.
T
|
|
|
|
Post by 12540dumont on May 7, 2015 0:07:15 GMT -5
Hurray! Isn't it wonderful to make a chink in the 'cracy?
I sure miss the bean curator at the USDA. She was a gem!
|
|
|
|
Post by keen101 (Biolumo / Andrew B.) on Aug 19, 2015 18:15:11 GMT -5
keen101.wordpress.com/2015/08/19/pea-breeding-resources/Since my website is hosted by me on my own computer (and thus very unreliable, especially since it is currently down), i have copied all pea breeding information that i was hosting on there to my external blog on wordpress.com. Thus this should be stable and at a permanent place that you can link to if you wish. Sorry for all the trouble
|
|
|
|
Post by templeton on Aug 20, 2015 6:13:39 GMT -5
Thanks, keen.
|
|
|
|
Post by galina on Aug 2, 2018 4:55:32 GMT -5
The problem with umbellatums is that their overall yield is lower than ordinary peas. And they need staking as the ones I know are half tall only and very top heavy. I am at the very early stages of evaluating/breeding with those peas that have multiple flowers at each node, but have not done any work on this project this year.
My one seed from a cross to a commercial stringless snap pea (Quartz) did not germinate this year. Unfortunately the Quartz peas I grew for the cross and for extra seed saving this year perished and I am getting low on seeds. Need to start right from the beginning with this project.
Quartz is a relatively short pea and those are always at risk locally, which is why I prefer tall peas. I note that backcrossing the F1 to the stringless variety is required to boost those stringless genes. It needs to be pollen from the stringless Quartz applied to the F1 for the backcross, if I got that right. The stringless pollen is not very competitive, so it needs to be helped a bit by removing the pollen on the F1.
I agree it is nonsense that mangetouts (snow peas) have round seeds, but the purpose of the video was how to breed stringless, so that is not an issue. I could just about cope with the audio.
Well I am not (yet) giving up on the project to breed stringlessness into other peas I like, but the start hasn't exactly been anything to boast about unfortunately. Frustrating. I wonder why the original stringless type perished.
|
|
|
|
Post by keen101 (Biolumo / Andrew B.) on Aug 2, 2018 13:06:24 GMT -5
The problem with umbellatums is that their overall yield is lower than ordinary peas. And they need staking as the ones I know are half tall only and very top heavy. I am at the very early stages of evaluating/breeding with those peas that have multiple flowers at each node, but have not done any work on this project this year. My one seed from a cross to a commercial stringless snap pea (Quartz) did not germinate this year. Unfortunately the Quartz peas I grew for the cross and for extra seed saving this year perished and I am getting low on seeds. Need to start right from the beginning with this project. Quartz is a relatively short pea and those are always at risk locally, which is why I prefer tall peas. I note that backcrossing the F1 to the stringless variety is required to boost those stringless genes. It needs to be pollen from the stringless Quartz applied to the F1 for the backcross, if I got that right. The stringless pollen is not very competitive, so it needs to be helped a bit by removing the pollen on the F1. I agree it is nonsense that mangetouts (snow peas) have round seeds, but the purpose of the video was how to breed stringless, so that is not an issue. I could just about cope with the audio. Well I am not (yet) giving up on the project to breed stringlessness into other peas I like, but the start hasn't exactly been anything to boast about unfortunately. Frustrating. I wonder why the original stringless type perished. I do think it would be clever to breed a umbel type into a shorter pea. In particular i wonder how well a super dwarf umbellatum would look like, in any case i imagine it would produce earlier, but i wonder if it would have less overall flowers because of less overall nodes. I think it probably would. I seem to remember from that video that the stringless sin2 gene was linked to a form of dwarfism, so i don't know how easy it would be to breed into a tall one or not. I think i May have had a tall stringless snap pea in my garden this year when doing taste tests. But if so it has been lumped with all the other snaps. Yeah who knows. Some have speculated that maybe sin2 is just a rediscovery of the lost or misplaced sin, but others have said they might have been different. |
|
|
|
Post by galina on Aug 6, 2018 3:01:23 GMT -5
Well Quartz is at the tall end of short peas, which bodes well. And I hope you can place your stringless one.
The issue is I think that tiny umbellatum would still be top heavy, bend over and end up with pea pods in the mud. At least you won't get that by staking the half tall ones. I believe you need a certain proportion of green material to pods and a tiny plant may not make that many, even if it were possible. But I must admit that some of the modern tiny peas seem to defy that ratio if pictures are anything to go by. Good luck @keen
|
|
|
|
Post by galina on Aug 16, 2018 1:24:23 GMT -5
I've just been rereading the JIC database, and noted a couple of genes for purple striations on the pods,and others for purple stripes along the pod edge. Some of these must be mixed up in my peas. Also noted there's a gene for asymetric lobe development in the leaflets - this is what is showing up in my yellow semi-leafless trials...I must have a closer look tonight. T I can't find the database anymore. Has it been moved? |
|
|
|
Post by keen101 (Biolumo / Andrew B.) on Aug 16, 2018 7:53:35 GMT -5
I've just been rereading the JIC database, and noted a couple of genes for purple striations on the pods,and others for purple stripes along the pod edge. Some of these must be mixed up in my peas. Also noted there's a gene for asymetric lobe development in the leaflets - this is what is showing up in my yellow semi-leafless trials...I must have a closer look tonight. T I can't find the database anymore. Has it been moved? Yes, and no. After the director retired last year they changed a lot. Old links are broken and some odd new spam bot filter(?) Is now annoyingly in affect. I think someone should complain. Really hard to use. data.jic.ac.uk/pgene/ |
|
|
|
Post by galina on Aug 16, 2018 12:04:24 GMT -5
keen101 (Biolumo / Andrew B.), thank you so much. Glad it is still there. I wondered whether it was to do with Mike Ambrose retiring. He has been so helpful and friendly and never minded amateur questions. Yes the access to it is tedious, but at least it is still available to us.
|
|
|
|
Post by galina on Mar 17, 2019 4:37:39 GMT -5
A question for all please. I am utterly confused between internode length, number of nodes to flowering and flowering height. For example: www.seedstor.ac.uk/search-infoaccession.php?idPlant=23739Inter Node Length 95 Height to Flower (cm) 70 Nodes to Flower 15 If I have 15 nodes to flower there should be 14 inter node lengths 70 cm divided by 14 means we have 50mm internode length, not 95. What am I getting wrong here please? |
|
|
|
Post by keen101 (Biolumo / Andrew B.) on Mar 17, 2019 11:36:46 GMT -5
A question for all please. I am utterly confused between internode length, number of nodes to flowering and flowering height. For example: www.seedstor.ac.uk/search-infoaccession.php?idPlant=23739Inter Node Length 95 Height to Flower (cm) 70 Nodes to Flower 15 If I have 15 nodes to flower there should be 14 inter node lengths 70 cm divided by 14 means we have 50mm internode length, not 95. What am I getting wrong here please? That is a great question! I have no idea, but I wonder if some of the pea breeders on OSSI forum would know. I could venture a guess that the nodes to first flower does not mean the plant is done growing and thus more nodes can come after flowering. Could that be throwing off your math? Bouncing off the last conversation, do you think breeding umbel types (or crown peas) with the semi-leafless / hyper-tendril trait would work? I think it could and I want to try for it some time. Two recessives might be tricky but not impossible. I'll have to double check if umbel and semi-leafless are on the same chromosome or separate. P.s. the pea database has been restored back to openwetware after my website spam mishap. openwetware.org/wiki/Pea_Database_Collaboration_Project/Pea_Genetics |
|
|
|
Post by galina on Mar 18, 2019 1:52:36 GMT -5
Thank you keen101 (Biolumo / Andrew B.) good idea. Maybe Mike Ambrose's email still works? Thank you for the pea database link. On the database af (hypertendrils) and fa fa2 fas are all in different linkage groups. Should be pretty straightforward 1 in 16 in the F2 or come through in later generations. I am not sure of the difference between the fasciation genes. But there is only one needed (if I understand the database right) to get fasciation. Not all of them together. |
|
Thank you
