|
Post by steve1 on May 6, 2016 7:43:23 GMT -5
steev would be the same as getting on a long haul flight - not much at all. starbuckwhy - Thanks for the papers, will look them over and post back thoughts...
|
|
|
Post by steve1 on May 5, 2016 5:10:16 GMT -5
Hmm, I seem to have a small truck load of peas... But am unenthused as I know the dose on this equipment that causes reporting for cancer risk. It's a very, very long time with admittedly low dose gear. We are talking very expensive gear, and if it can't be done with warm up and safety check screenings I couldn't ask.
|
|
|
Post by steve1 on May 3, 2016 18:13:36 GMT -5
Has anyone got any papers regarding x Ray dosage rates for any seeds? If I have some numbers I could chat with a radiographer mate and see whether it might be achievable when they do machine warms ups and tests...
|
|
|
Post by steve1 on May 2, 2016 22:55:24 GMT -5
Not sure about the weather and size. Other yellow snaps are ok. Have thrown some liquid fertilizer at them to see if it makes a difference. I suspect not. It's probably in part at least the more genes you stack that negatively affected effect pod photosynthesis the smaller the pod. This one is homozygous for low parchment ppVV, yellow pod and snap but nothing else. Good work on the reds. Cheers Steve
|
|
|
Post by steve1 on May 2, 2016 19:35:41 GMT -5
Hi guys, here's a pic of one of the red snaps segregating at the moment. Three out of four lines appear to be very much on the small side. Not sure whats up with that. This is the larger line but mature (not so pretty) pod. dl.dropboxusercontent.com/u/94877168/redsnapsmall.jpgCheers Steve
|
|
|
Post by steve1 on Apr 30, 2016 19:20:17 GMT -5
From what I've read grafting to seedlings will produce a very large tree with matching large root system which may have advantages in dry areas where irrigation is limited. Total yield per acre will be less if that's a concern. Also they may not have resistances to things such as wooly aphids. That's why there are commercial rootstocks such as the malling series. If you do quite a bit of apple grafting you could get the rootstock of your choice and 'stool' it. Though it takes a couple of years to hit production they are long lived. It's not my area of expertise, just what I have been taught and read. Cheers Steve
|
|
|
Post by steve1 on Apr 28, 2016 1:02:09 GMT -5
Does that mean then the intermediates are pure breeding tall and the tallest are heterozygous? When they hit full size count them up - and if you want I'll run them through a chi square stats package. I think F2's are pretty vigorous from what I've seen - but I believe it's related to overall heterozygosity not just the Le/le locus. Cheers Steve
|
|
|
Post by steve1 on Apr 25, 2016 16:47:17 GMT -5
keen101 (Biolumo / Andrew B.) Interesting about the intermediate offspring. There are I think at least 5 recognized genes that only function in the presence of le. I seemed to have three different heights segregating in one cross - I just assumed I had one of the other genes in the mix. I suppose you could always check the numbers and run it through a chi square.
|
|
|
Post by steve1 on Apr 25, 2016 5:41:07 GMT -5
starbuckwhy - no need to mention it. X-rays of course do not leave any lasting danger/radiation, so at the point you are renting land it's simply a plant breeding project. End of story.
|
|
|
Post by steve1 on Apr 22, 2016 4:42:36 GMT -5
Nice work templeton . Sounds like you have a good plan. When's the snap due? Not that it's a competition... Cheers
|
|
|
Post by steve1 on Apr 14, 2016 13:22:38 GMT -5
You could also plant the different varieties at a gradient of spacings. I.e. Too close getting longer to above recommended. Some will be stunted and tassel/silk later. A useful way to get overlap, worked well for me, except for the day length sensitive Peruvian corn that was two months after.
|
|
|
Post by steve1 on Apr 14, 2016 5:16:57 GMT -5
Nice reference steev. Two references on Google. Gonna rent that one when I find it...
|
|
|
Post by steve1 on Apr 12, 2016 5:33:13 GMT -5
starbuckwhy check out Stig Blixt under Google scholar. He's the more recent genetic & radiation mutation pea guy (60's/70's) should give you ideas of doses for peas. Hope that helps.
|
|
|
Post by steve1 on Apr 6, 2016 9:35:27 GMT -5
Thanks keen101 (Biolumo / Andrew B.), I've read about tetraploid peas (from a Russian paper maybe). Not too hard to do with the right agent. Sigh, if I was going to import there'd be a few things well in front of that. And saying that I can only barely keep on top of my current projects.
|
|
|
Post by steve1 on Apr 6, 2016 4:54:48 GMT -5
My two cents worth... It depends how much you want to keep the pods. I have been forced to make pouches out of pet mesh (a sort of tough fly wire) to keep my crosses. Just cut a square fold in half and staple using an office stapler up the sides and across the top. The pet mesh pouch means that you have a much greater chance of finding important crosses later. If you are making pouches for rats you might have to find something that's heavier duty. If you are desperate you can graft peas to save special vines, but they often grow easily as a cutting too. Mouse proof pouch www.dropbox.com/s/icqhrd92sshsk44/smallpeapouch.jpg?dl=0
|
|