Could there have been a single cross in 2009-2010, the seed of which produced the (F1) bulbing flower, which ....nah, doesn't work, the F1 didn't produce flowers to get fertilised and segregate out...so, a bud sport - how exciting!
My reading a few years ago suggested that bunching onions/ topset onions were a complex, long-in-cultivation lineage, that was very difficult to unpick, with a number of suggested antecedents. Some bunched, some didn't, some topset, some didn't, some hade fertile material, in varying shades, some didn't. All very messy. T
I felt as though it couldn't have been a cross pollination of some kind during the summer just past when generation (1) branched into the two distinctive but uniform groups. So if the autumn ones grow bulblets but the spring ones only grow onions,that means i could sell the bulblets in spring only and that means ;D ;D
Update on season #3,first photo is of the autumn sown and this year only two have grown a bulbil/flower stem red arrow the rest will go onto growing a normal onion, blue arrow are the replants from last seasons normal onions to see what they produce,bulbils or flowers.
Second photo are the spring sown bulbils,i what to see any of these grow a stem which i doubt they will, mainly want to see if they grow a quality onion,its the first time ive sown any in spring
Last Edit: Nov 15, 2012 0:08:10 GMT -5 by richardw
Some of the strange topset qualities may be more properly be called a reversion rather than mutation. Seed onions as we know them haven't been around so very long. Look at all of the known varieties and not many are more than 100 years old. It's known that topsetting types will cross with seed types. In addition to the topsets, those also do produce blossoms and those blossoms do have pollen.
The last two years the plants that produced the bulbils didn't produce flowers,in the photo which is from the first season and you can see on the top which looks like flowers developing,well thats as much as they did,they never developed any further,it was the same last season and it will be interesting if this seasons bulbil heads do the same.
Last Edit: Nov 16, 2012 12:52:02 GMT -5 by richardw
As well as having a bed of bulbil producing onions ive also a block of California red onions for seed,this season one onion produced what looked the same as the bulbil plants,but today i noticed that its growing flowers instead so i pulled it out as i don't want to take chances with this ugly looking thing crossing.
Post by Joseph Lofthouse on Feb 1, 2013 14:06:45 GMT -5
This is how I am packaging seeds for shipment these days:
Then I put it in a social envelope and mail it without customs forms... It meets the regulations of being flat, and less than 3/4" thick. With many species, it's less than 1/4" thick.
I construct the letter like this: Cut a piece of cardboard to fit in the party envelope. Cut a hole that fits the seed envelope(s). Glue cardstock to either side of the cardboard with the seeds sandwiched in between. Slip the whole thing into the party envelope.
Silt/clay, high-altitude, super-arid, sun-drenched, irrigated-desert garden. Cold radiant-cooled nights. ~100 frost free days. Grow most of my own locally adapted landrace seed. GDD10C ~1300. Author of Mother Earth News: Landrace Gardening Blog.