- Assessment of Genetic Diversity and Population Structure in a Global Reference Collection of 531 Accessions of Carthamus tinctorius L. (Safflower) Using AFLP Markers. Bayesian analysis of genetic diversity of global (43 countries) collection held in India reveals 19 geographic groups, with most diversity in the Near East and Iran–Afghanistan regions.
- Molecular evaluation of orphan Afghan common wheat (Triticum aestivum L.) landraces collected by Dr. Kihara using single nucleotide polymorphic markers. Analysis (Bayesian, natch) of genetic diversity of over 400 wheat landraces collected 1950-1970 and conserved at the Kihara Institute for Biological Research, Japan reveals agroecological patterning and hotspot in Badakhshan province.
- Sources of pest resistance in cassava. Analysis of 89 trials over 25 years involving the CIAT cassava collection identifies 129 landraces with high resistance to thrips, 33 to green mites and 19 to whiteflies.
- Screening sweetpotato genotypes for tolerance to drought stress. Days to permanent wilting point (DPWP) points to 8 promising clones in Kenya.
- Olive domestication and diversification in the Mediterranean Basin. About 400 wild and cultivated accessions divide up into W, central and E groups and show evidence of admixture among them and local domestication events.
- The Multiple Functions and Services of Community Seedbanks. More than just conservation.
- Diversification practices reduce organic to conventional yield gap. More data and fancier maths finds a lower organic yield gap (20%), which is halved by multi-cropping and crop rotations.
- Conserving landraces and improving livelihoods: how to assess the success of on farm conservation projects? All you need is two graphs.
- Finding Our Way through Phenotypes. “We urge all biologists, data managers, and clinicians to actively support the development, evaluation, refinement, and adoption of methodologies, tools, syntaxes, and standards for capturing and computing over phenotypic data and to collaborate in bringing about a coordinated approach.” Amen.
- Wild food in Europe: A synthesis of knowledge and data of terrestrial wild food as an ecosystem service. 65 million people collect, and at least 100 million consume, wild food. But only 81 plants? Thought it would be more. But even so, quite an ecosystem service.
All maize, all the time
Lots on maize on the interwebs lately. First, there was a Nature Plants paper on the origin of the crop in the southwestern US, comparing DNA from ancient cobs with that from Mexican landraces:
“When considered together, the results suggest that the maize of the U.S. Southwest had a complex origin, first entering the U.S. via a highland route about 4,100 years ago and later via a lowland coastal route about 2,000 years ago,” said Jeffrey Ross-Ibarra, an associate professor in the Department of Plant Sciences.
A separate article in the journal summarized the results and set them in a wider context:
As genomic and palaeo-genomic studies have become more common, it has become increasingly clear that virtually every domestic plant and animal has incorporated genomes of numerous populations, including many that were not involved in the original domestication process. For example, although grapes, apples and pigs were domesticated outside of Europe, admixture with native wild European species has been so significant as to obscure the geographic origins of the modern domestic populations.
Meanwhile, the controversy over how to measure genetic erosion in maize continues, though I’m afraid in this case only the extract is free.
Which all means that the rather nice learning resource on maize domestication at the University of Utah, which I coincidentally recently came across, may need to be tweaked a bit.
Incidentally, if you plug Zea into the Native American Ethnobotany database at the University of Michigan, also a serendipitous find over the holidays, you’ll see that maize was far from being just a food plant.
There are even a couple of historical maize specimens included in the beta version of the new data portal of the Natural History Museum in London, which seems to be getting the softest of launches just now. Great to browse through. Not sure what kind of launch Brazil’s new(ish) biodiversity information system (SiBBs) got, but it too features maize records, over 400 in this case, though only 10 georeferenced. The source of most is given as “Dados repatriados – United States (no coordinates)”, which means that they came from GBIF, and in the case of maize are probably therefore mostly from GRIN. As I said a couple of posts ago for wheat, data sure does get around online.
Nibbles: Domesticating grasses, Svalbard, Explaining genebanks, Australian edibles, Carolina African Runner, Whale ball beer
- Grasses with bigger seeds and fewer stems make better crops.
- Genebanks are just the start.
- Wait, what’s a genebank?
- How much bush tucker is in genebanks anyway?
- Bringing back the Southern peanut.
- Smoked whale testicle beer for you, sir?
Nibbles: Svalbard recruitment, Barley breeding video, Orphan crops breeding, Agroforestry double, Afghan pomegranate, Australian hazlenut, DivSeek video, Raspberry breeding video, Strawberry fungi, OFSP, Genebanks, Old chiles, Mexican cuisine, Shakesperean sallat, Dietary diversity, Seed exchange, European wild animals, Dutch AnGR, UK indicators, Millets promotion, Wheat extravaganza, Deforestation map, Chickens & turkeys, Ancient horses, Kenyan grass, Olive pests, Penang anniversary
- Sorry about the light blogging lately. I’m on leave and Jeremy is in the manure. Thankfully Robert has been picking up the slack lately, apparently because he has nothing better to do. Anyway, here’s a juicy roundup of Nibbles covering the past week and more. Starting with this stunner: Svalbard needs an adviser!
- Breeding better barley: The video. No videos, however, on breeding Africa’s orphan crops. Yet.
- Some of those are agroforestry species. Which is not confined to Africa, of course. But pomegranate is not included, alas for the Afghans. Nor the hazlenut, alas for the Australians, who will however admittedly probably sequence the thing themselves.)
- DivSeek does have a video, though.
- Even raspberry breeding has a video. But if this strawberry hack works for other plants, breeders might not be needed at all :)
- Orange-fleshed sweet potato folks meet in Ghana for annual jamboree.
- An insurance policy for agriculture? Yes, you guessed it.
- Recovering the NM chile. Hot stuff from a cold place. Yes, you guessed it. Again. (BTW, not only important in New Mexico.
- How to make a 17th century sallat. You heard me.
- CIAT on getting ahead of dietary trends. No, not from the 17th century. This being the current situation, however. And more specifically for dietary diversity among women. Yes, it’s all about diversification. Including in homegardens. Which were the great love of the great, late Olga Linares.
- The benefits would be so great to get nutrition right. And yet we haven’t. And without Olga it’s not going to be any easier. Maybe we could start by curing Indians of their pizza habit.
- The largest seed exchange in the world. It says here. There I was thinking it was the CGIAR genebanks.
- Rewilding Europe. Kinda sorta.
- The Dutch have new policies on conserving livestock genetic resources. At least yaks are not an issue.
- Meanwhile, the UK biodiversity indicators include one on crop genetic diversity.
- Maybe all it needs is better marketing, like these millets?
- Or perhaps a data portal, like wheat’s.
- Which may soon be out of date for the Punjab. Or should be, anyway, according to this IFPRI study. And also for the US, according to this maverick breeder getting a writeup in the NY Times.
- Be that as it may, help is on the way for wheat, in the form of its wild relatives. According to some people who should know.
- Interactive global deforestation map. Because we can.
- Black chicken? And why not? Not Icelandic, though, I’m willing to bet. Chickens? “…it was the forced opening of China by the West in the 1840s that made the modern [chicken] possible.” Not so the turkey, though.
- Ancient horse breeders liked spots. And then they didn’t. And then they did…
- Disease resistant Napier grass in Kenya. Must ask the mother-in-law whether she has some.
- Oh dear, Italian olives are in trouble. Again. Ah, yes, the olive, symbol of peace.
- Penang Botanic Gardens has a big birthday.
- Hope that keeps you going for a while…
Brainfood: Garden pollinators, Herbarium Analytics, Rice & nutrients, High altitude barley, Sunflower hybrids, Coconut pollen cryo, Evolution & dormancy, Evolution of C4, Maize landraces, Viruses
- Culturally valuable minority crops provide a succession of floral resources for flower visitors in traditional orchard gardens. Proper gardens better for pollinators than unmanaged plots.
- Trends in access of plant biodiversity data revealed by Google Analytics. No impact of social media on the use of plant data, and the future is mobiles.
- Worldwide Genetic Diversity for Mineral Element Concentrations in Rice Grain. Most, though not all, elements showed high heritability, which is good news for breeders.
- Agriculture facilitated permanent human occupation of the Tibetan Plateau after 3600 BP. No barley, no Tibetans.
- Seed fates in crop-wild hybrid sunflowers: crop allele and maternal effects. Having wild mothers helps wild-crop hybrids survive in the wild.
- Coconut (Cocos nucifera l.) pollen cryopreservation. Eureka!
- The evolution of seed dormancy: environmental cues, evolutionary hubs, and diversification of the seed plants. More dormancy, more speciation.
- The evolutionary ecology of C4 plants. C4 opens new niches, but it’s all a matter of contingency and you have to follow the whole evolutionary history of a group to understand its current ecological strategy.
- A Minor Role for Environmental Adaptation in Local–Scale Maize Landrace Distribution: Results from a Common Garden Experiment in Oaxaca, Mexico. It’s the social factors, stupid.
- Crop immunity against viruses: outcomes and future challenges. PAMP (pathogen-associated molecular patterns)-triggered immunity (PTI) may be the future.