- Characterizing the allopolyploid species among the wild relatives of soybean: Utility of reduced representation genotyping methodologies. Allopolyploids are more than the sum of their diploid progenitors, but also less.
- Genetic Diversity within a Global Panel of Durum Wheat (Triticum durum) Landraces and Modern Germplasm Reveals the History of Alleles Exchange. Modern varieties have a lot of rare alleles, and Ethiopian landraces may be the results of a separate domestication. But I’m not sure you can call this a core collection. Incidentally, genotyped by 35K Affymetrix Axiom wheat breeders array1 at TraitGenetics (Gatersleben, Germany).
- Genome Wide Association Study to Identify the Genetic Base of Smallholder Farmer Preferences of Durum Wheat Traits. Farmers know what they’re talking about. No word on any overlap with above. Incidentally, genotyped on the Infinium 90K wheat chip at TraitGenetics (Gatersleben, Germany). There’s a coincidence!
- The role of livestock intensification and landscape structure in maintaining tropical biodiversity. If we want to keep more livestock while maintaining biodiversity, we should spare forests and avoid using agrochemical inputs. Assuming that dung beetles can stand in for tropical biodiversity as a whole.
- Organic farming enhances soil microbial abundance and activity — A meta-analysis and meta-regression. Especially legumes in crop rotations and organic inputs.
- Identification of promising sources for fodder traits in the world collection of pearl millet at the ICRISAT genebank. From over 300 to about a dozen.
- Genetic Diversity and Population Structure of Brachiaria Species and Breeding Populations. Fancy molecular markers agree with morphology.
- Bottlenecks in the PGRFA use system: stakeholders’ perspectives. Need better policies, capacity and access.
- Solanum jamesii: Evidence for Cultivation of Wild Potato Tubers by Ancestral Puebloan Groups. But does it make good chips?
- Resistance to Sclerotinia sclerotiorum in wild Brassica species and the importance of Sclerotinia subarctica as a Brassica pathogen. Thanks to the U. of Warwick genebank.
- Genetic changes in a novel breeding population of Brassica napus synthesized from hundreds of crosses between B. rapa and B. carinata. Any of them resistant to Sclerotinia?
Brainfood: Kolli Hills diversity, Fergana diversity, Chinese rice terraces, ICRISAT prebreeding, Spanish CWR collecting, Edible flowers, Diversification, Prices vs volatility
- An ethnographic exploration of perceptions of changes in dietary variety in the Kolli Hills, India. Cassava cash cropping has had unforeseen effects on dietary diversity.
- Mapping and assessing crop diversity in the irrigated Fergana Valley, Uzbekistan. More crops on the edges.
- An Analysis on Crops Choice and Its Driving Factors in Agricultural Heritage Systems—A Case of Honghe Hani Rice Terraces System. Established for “red rice”, but that’s not enough.
- Prebreeding Using Wild Species for Genetic Enhancement of Grain Legumes at ICRISAT. It’s not easy, but it’s been worth it.
- A Multispecies Collecting Strategy for Crop Wild Relatives Based on Complementary Areas with a High Density of Ecogeographical Gaps. Collecting in Spain in “…top 10 selected complementary areas would allow the capture of 59 of the 88 targeted taxa and 31% of the 683 different taxa-ELC category combinations identified in the ecogeographical gaps.”
- Antioxidant power, anthocyanin content and organoleptic performance of edible flowers. Tycoon Blue will be quite the marketing challenge.
- Diversifying Food Systems in the Pursuit of Sustainable Food Production and Healthy Diets. And nary an edible flower mentioned.
- Cereal price shocks and volatility in sub-Saharan Africa: what really matters for farmers’ welfare? Prices.
Domesticating horsegram
The indefatigable Dorian Fuller has been even less fatigable than usual lately, with a couple of papers in the past few weeks on the history of the horsegram, Macrotyloma uniflorum. The first is a general review of the geographical, linguistic and archaeological evidence for the origins of the crop. They point to a long history in India and at least two separate domestications there.
The second is a much deeper dive into the history of domestication, using high resolution x-ray computed tomography with a synchrotron to measure non-destructively the decrease in seed coat thickness with time in archaeological remains of domesticated material. A thin seed coat is thought to be related to loss of dormancy, and hence part of the domestication syndrome. It had been suggested that rare non-dormant variants might have been selected during domestication, but the evidence from horsegram is that even the thick-coated, and therefore presumably still dormant, material was domesticated.
Which is all very interesting, but what I want to leave you with is a little quiz. Given that Kersting’s groundnut is now also in Macrotyloma, as M. geocarpum (Harms) Maréchal & Baudet, how many other con-generic species can you think of that were domesticated on separate continents? Apart from the two Oryza species, of course.
Brainfood: African tea, Iranian olives, Persistent identifiers, Fast breeding, Lablab domestication, Pea origin, Celebs & conservation, Ancient dope, Sugarcane evolution, Chicken selection
- Multiple origins and a narrow genepool characterise the African tea germplasm: concordant patterns revealed by nuclear and plastid DNA markers. It’s a “potpourri,” but kinda missing Chinese Assam stuff.
- The eastern part of the Fertile Crescent concealed an unexpected route of olive (Olea europaea L.) differentiation. It was in Iran before domestication.
- Identifiers for the 21st century: How to design, provision, and reuse persistent identifiers to maximize utility and impact of life science data. Why DOIs succeeded, and why something like them needs to be applied to biological specimens, including genebank accessions, to combat “desultory citation practices”. But we knew that.
- Speed breeding: a powerful tool to accelerate crop research and breeding. Can double the number of generations per unit time with fully-enclosed controlled-environment growth chambers.
- Evidence for two domestication events of hyacinth bean (Lablab purpureus (L.) Sweet): a comparative analysis of population genetic data. With the 2-seeded group domesticated in Ethiopia, the 4-seeded somewhere else in Africa.
- Refinement of the collection of wild peas (Pisum L.) and search for the area of pea domestication with a deletion in the plastidic psbA-trnH spacer. Maybe not Turkey.
- The effectiveness of celebrities in conservation marketing. Use carefully, and evaluate.
- Cannabis in Eurasia: origin of human use and Bronze Age trans-continental connections. Proto-Indo-Europeans were real stoners.
- Analysis of Three Sugarcane Homo/Homeologous Regions Suggests Independent Polyploidization Events of Saccharum officinarum and Saccharum spontaneum. It’s really complicated, not least because of plant breeders.
- Genomic Comparison of Indigenous African and Northern European Chickens Reveals Putative Mechanisms of Stress Tolerance Related to Environmental Selection Pressure. African chickens able to withstand high temperatures due to a region on chromosome 27 and European chickens low temperatures due to region on chromosome 2.
Nibbles: Dwarf rice, Ricestoration, Tarostoration, Biorepositories, Sustainable coffee, Cactus wars, Goaty portraits, Spandrels, Potato genebank, Forests and nutrition
- The long and short of Green Revolution rice.
- Restoring historical slave-worked rice fields in North Carolina.
- Kinda similar, but taro in Hawaii.
- There’s a bank for milk diversity.
- Nice review of sustainable coffee production.
- Opuntia: tasty but deadly (to some).
- Handsome goat pix.
- Festoons of fruits at the Farnesina: Jeremy is incensed.
- Great new webpages for the CIP genebank.
- Another report on a report that living close to forests is good for nutritional security, up to a point. But bushmeat?