- Genetic diversity and phylogeography of broomcorn millet (Panicum miliaceum L.) across Eurasia. One origin or two? Moving east or west? We still don’t know, but crop wild relatives may tell us.
- Next-generation sequencing for understanding and accelerating crop domestication. Those who understand history may be able to repeat it.
- Competition among loblolly pine trees: Does genetic variability of the trees in a stand matter? Can’t really say either way.
- The potential of South African indigenous plants for the international cut flower trade. Could do better.
- Genetic variability of banana with ornamental potential. The Embrapa Musa collection has some really cool-looking plants.
- Cytological Behavior of Hybridization Barriers Between Oryza sativa and Oryza officinalis. I guess that’s why they call it the tertiary genepool.
- Ancient lipids reveal continuity in culinary practices across the transition to agriculture in Northern Europe. Crap on 6000-year-old ceramic vessels shows people in the Western Baltic continued to eat fish and clams even after agriculture arrived. Well do you blame them?
- Options for support to agriculture and food security under climate change. Show ’em yer multi-pronged strategies, that’ll get their attention.
- N.I. Vavilov’s Theory of Centres of Diversity in the Light of Current Understanding of Wheat Diversity, Domestication and Evolution. When genes flow from centre of origin, that centre will not coincide with centre of diversity.
Desperately seeking germplasm
Thanks to Cary for pointing out this interesting request on IdeaConnection, which is basically an online market-place for crowdsourcing solutions to R&D problems. A “client” is willing to pay a finder’s fee of $2,000 for cucumber germplasm resistant to nematodes, Fusarium, CGMMV, downy mildew and cold. Easy money? Hardly. We’re talking about Genebank Database Hell here.
You can search GRIN on evaluation descriptors, but the only one of the target traits for which there are data is downy mildew. Some 175 accessions are listed as having low susceptibility to that disease, but that basically is as far as you can go. You could theoretically download those results with additional data on origin and then maybe focus in on specific countries where you think you might have a better chance of finding cold-tolerant material. Like Canada, maybe. But I was not able to get the download to work. There are probably ways around it, but the bottom line is that at most we’d be able to satisfy one and maybe a half of the conditions. CGN also allows a search on plant traits, but only characterization descriptors, and if any of its 937 cucumber accessions satisfy the search criteria, we won’t be able to find out online. AVRDC does allow a search on pest and disease resistance, but I don’t know enough about the subject to know whether the two cucumber mosaic viruses listed are the same as CGMMV, and in any case there are no accessions resistant to either.
That two grand clearly won’t be easy to claim just by trawling public genebank databases, which is kind of a damning indictment of the state of genetic resources documentation, and probably the reason why the “client” went the IdeaConnection route in the first place. It’ll have to be an inside job, I guess, a breeder or genebank curator who knows they have the requisite germplasm sitting on their shelf, say.
But wait, not all is lost, maybe watermelon might be easier?
Nibbles: Bangladeshi horticulture, USDA-ARS impact, NY native seeds, Spate irrigation, FIGS, Livestock trifecta
- The floating gardens of Bangladesh.
- So, USDA-ARS, what have you done for me lately?
- The story of Ed Toth, the director of New York City’s native plant center on Staten Island. In other news, New York City has a native plant center.
- Not all floods are bad.
- The Consortium discovers FIGS.
- Livestock genetic resources for the poor: The interview. And the PowerPoint. And the Fancy Science.
Naked and susceptible to smut — but not new
Kudos to Carolyn Ali at straight.com — “Vancouver’s online source” — for a fluffy and under-researched story that led me to something of real interest. Ms Ali reported breathlessly on “a new — and naked — oat”. But of course there is nothing new about naked oats. They lack the hull that surrounds the grains of ordinary oats. That makes them a lot easier to thresh, and they were recorded in England in the middle of the 16th century, where they were known as “peelcorn” and “skinless oats”. So not really novel. And not rare either. Luigi rapidly found me hundreds of accessions in genebanks around the world.
I was going to leave it at that, a pained someone-is-wrong-on-the-internets or a smug why-are-modern-“journalists”-too-lazy-to-do-basic-research diatribe. Ms Ali’s piece is essentially a puff for Manitoba farmer Scott Sigvaldason, who grows the stuff and cannily registered the name Cavena nuda (geddit?). ((Oats are Avena sativa. Naked oats are usually A. nuda, sometimes A. sativa var. nuda. Cavena for Canada, the country that brought you Canola, because rape is way too inflammatory a name.)) But looking at Naked Oats, a paper by T.R. Stanton in the Journal of Heredity (vol 14, 1923), I learned about more than the antiquity of naked oats.
I learned also that in every trial to date, naked oats had performed very poorly indeed in comparison to their clothed brethren, which gave three, four, even six times more grain. Yield, of course, isn’t everything. Unfortunately, naked oats are more susceptible to smut and rust than other oats, and deteriorate very quickly in storage, which also affects their viability as seed. They do, however, possess one very valuable quality: each spikelet contains several flowers, which produce 4 to 12 grains per spikelet, compared to two in normal oats. Several breeders (prior to 1923) had tried to insert this characteristic into normal oats, without success. Stanton concludes:
[S]uch a variety is impossible. [Researchers] have shown that the many-flowered spikelet and naked kernel or membraneous palea are linked. For this reason the number of flowers is reduced in all plants which breed true for adherent palea (hulled condition). According to Capron, a biflorous naked form is possible, but from the practical aspect is not desirable. On the other hand, a multiflorous hulled form is very desirable, but seems impossible genetically.
Ali’s article cites Vernon Burrows (“Dr Oats” according to some sources) as the breeder who created Cavena nuda, aka AC Gehl. Had he achieved the impossible? It doesn’t matter, because we’re talking about naked oats. It is rust resistant, which is good. Of greater interest, to me, is that the protein of at least some of the newer naked oat varieties is of rather good quality, so much so that Campbell’s created a new kind of soup, called Nourish, based on naked oats. Campbell’s further offered to give 100,000 cans of Nourish to Food Bank Canada. The soup is touted as:
[A] complete meal, delivering iron, calcium and a full serving of vegetables, fibre and at least 18 g of protein. The first-of-its-kind product was developed to address the problem of hunger both in Canada and internationally, as well as to be a reliable food source for people impacted by disaster situations abroad.
Campbell Soup Company is keen to “push hunger into a smaller box” (see for yourself) and is giving Canadians a chance to help the World Food Programme by donating $0.25 — the price of a school meal — to WFP for every can a Canadian buys. So I’m feeling really bad about my initial instinct to trash Carolyn Ali’s story just because it was a bit wrong.
And I’ll bet T.R. Stanton would be feeling bad too, for being so negative about naked oats.
During the past fifty years naked oats have been advertised several times as a valuable new variety, with extravagant claims as to their yielding power and usefulness as compared with common oats. The purchaser in every case was “gold bricked” and became the unfortunate victim of the clever advertising of the promoter.
Stanton goes on to talk about the Bohemian oats scandals.
In the decade from 1870 to 1880, naked oats, under the name of Bohemian oats, were for the first time widely exploited in this country. They were known prior to this, but apparently had been given no serious consideration, especially [sic. huh?] as a plant novelty that would lend itself readily to spurious exploitation. During the period of the Bohemian oat scandal the seed was sold for as much as fifty cents a pound. The Bohemian oats were rather widely distributed, but farmers discovered that they were greatly inferior to ordinary oats and soon they had almost entirely disappeared from cultivation. However, sporadic exploitation of naked oats under other names has occurred up to the present day.
The Bohemian oats scandal is an absolutely beautiful con, beautifully explained by Laura Bien at Ypsinews.com. It could never happen again.
Could it?
Nibbles: Bioinformatics, Extension, Apples, Potatoes, Research, Cacao genebank, Cassava hope, Rice and Striga
- Bioinformatics for Dummies. Not that anyone I know needs it.
- Are there simpler ways to close the yield gaps in developing countries? Indeed, there are, but they’re not very sexy.
- And speaking of low-hanging fruit: How the apple took over the planet.
- Tuber diversity. Miss Hathorn is showing off the progeny of some true potato seed. And by true, I also mean truly potato.
- USDA ARS ♥ CGIAR ♥ USDA ARS
- And Trinidad & Tobago ♥ CFC, ICCO and Bioversity.
- Nigeria pins green revolution hopes on cassava. Is it ever a good idea to pin your hopes on just one thing?
- NERICA’s Striga problem deconstructed.