- The role of protected areas in supplying ten critical ecosystem services in drylands: a review. Let the communities take the lead, be inventive about governance.
- Breeding Oil and Table Olives for Mechanical Harvesting in Spain. 19,000 seedlings, 481 preselections in intermediate field trials, 31 advanced selections in a network of field trials, 1 new protected cultivar Sikitita (Chiquitita in USA).
- Phenotypic and molecular characterization of plants regenerated from non-cryopreserved and cryopreserved wild Solanum lycopersicum Mill. seeds. Oops, SSRs pick up some changes.
- Pollen Cryopreservation to Support Maintenance of a Wild Species Collection of the Genus Allium. Variable success. And no word on somaclonal variation.
- Epiphytic bacteria biodiversity in Brazilian Cerrado fruit and their cellulolytic activity potential. No fewer than 29 bacterial genera on 32 native fruits, 30% producing cellulase.
- Fine-scale spatial genetic structure of common and declining bumble bees across an agricultural landscape. Not much structure, due to queen dispersal. Declining species less diverse.
- Genetic Diversity in Remnant Swedish Hop (Humulus lupulus L.) Yards from the 15th to 18th Century. The old varieties are still there, having gone feral in abandoned yards because, unlike for 450 years until 1860, Swedish farmers are, alas, no longer obliged to grow the stuff.
- A comparison of wild and cultivated strawberries for nitrogen uptake and reduction. Some wild accessions might be better at assimilating N.
- Advances in European sea bass genomics and future perspectives. There’s a sequenced genome, but nobody’s using it.
- Genetic effects of forest management practices: Global synthesis and perspectives. There’s no excuse for not doing the right thing now.
- Exploring the variability of a photoperiod-insensitive sorghum genetic panel for stem composition and related traits in temperate environments. You can improve biomass quantity and quality simultaneously. Stem composition variability follows genetic origin.
Nibbles: Fossil biodiversity, Culture & health, Cicer drought experiment, Endangered fish, Wheat hydridization, Food aid, Ag trade double, Sustainable diets, Fermentation book
- The Global Fossil Record. Visualized. Not agricultural, but couldn’t resist it.
- Malnutrition? It’s the culture, stupid.
- Check out the world’s largest chickpea drought trial.
- Overfishing the Amazon.
- Ah, so that’s how wheat did it!
- Food aid can support sustainable livelihoods too.
- Soon, most crop production will go to feed China’s pigs. And you’ll be able to follow that on FAOStat’s interactive thingie on agricultural tradeflows.
- But it can’t possibly be good for sustainable diets, can it?
- New book on fermentation. Never enough of those.
Brainfood: Azeri grapes, Biodiversity & ecoservices, Ivorian melons, Omani chickens, Insecticides & pollinators, Czech wild wheat, African yams, Livestock breeding, Natural selection, Bean proteins
- Biodiversity and breeding of grapes: a study in Azerbaijan. Long history, 2 main wild types, 600 cultivated varieties, 100 of them threatened.
- Linkages between biodiversity attributes and ecosystem services: A systematic review. Mainly, but not exclusively, positive. Always complicated.
- Genetic relationships among accessions of African indigenous melons (Cucumis melo L. ssp. agrestis) using AFLP markers. Vegetable and soup thickener types separate genetically.
- From India to Africa across Arabia: An mtDNA assessment of the origins and dispersal of chicken around the Indian Ocean Rim. Arabian chickens come from India, Somali chickens from SE Asia.
- A restatement of the natural science evidence base concerning neonicotinoid insecticides and insect pollinators.. Here’s the data. Make up your own mind.
- Aegilops conservation and collection evaluation in the Czech Republic. 1 species in situ, 21 ex situ.
- Next-generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams. Both wild and cultivated species form distinct groups, except for Dioscorea rotundata, which is a mishmash of stuff.
- Issues and concerns in smallholder livestock genetic improvement programs in Africa. Got to select for multiple uses under less-than-ideal conditions. Not easy.
- Exploring natural selection to guide breeding for agriculture. Survival in the wild is not the same as performance in a cultivated field, but understanding the basis of adaptation can still help in breeding.
- Evaluating Two-Dimensional Electrophoresis Profiles of the Protein Phaseolin as Markers of Genetic Differentiation and Seed Protein Quality in Common Bean (Phaseolus vulgaris L.). Back to the future. Who needs DNA when you have proteins.
Brainfood: Greek olives, Slovak grapes, Wild cotton, Livestock breeding, Urban veggies, Dismal millet, Beautiful plumage, Nutritious millet, Kiwifruit double
- Genetic structure of the Greek olive germplasm revealed by RAPD, ISSR and SSR markers. Reflects usage.
- Genotyping of Vitis vinifera L. within the Slovak national collection of genetic resources. Unclear whether it reflects usage.
- Molecular confirmation of species status for the allopolyploid cotton species, Gossypium ekmanianum Wittmack. It has been hiding in collections as “wild” G. hirsutum, but it really isn’t.
- North American animal breeding and production: meeting the needs of a changing landscape. We’ll need a better fit of genotype to production environment, better meat quality, better animal health and decreased residual feed intake; climate change will make it more difficult, but it will still be possible, especially using new genomic tools.
- Urban agriculture: a global analysis of the space constraint to meet urban vegetable demand. We’re going to need bigger cities, to grow enough vegetables in them, to feed them. No, wait…
- Niche Markets for Agrobiodiversity Conservation: Preference and Scale Heterogeneity Effects on Nepalese Consumers’ WTP for Finger Millet Products. That’s Willingness to Pay. And there is a bit of the population with enough of it to suggest that a price premium could translate into more acreage. And maybe more public investment.
- Selection and Crossbreeding in Relation to Plumage Color Inheritance in Three Chinese Egg Type Duck Breeds (Anas platyrhynchos). Hybrids are better layers, but then you can lose the desired plumage. Here’s how to have your beautiful duck and eat it too.
- Micronutrient Density and Stability in West African Pearl Millet — Potential for Biofortification. There is some, but there would be more if some Indian material was used in breeding too.
- Genetic diversity in kiwifruit polyploid complexes: insights into cultivar evaluation, conservation, and utilization. Interploid crosses can increase genetic diversity. The red-fleshed cultivars are genetically distinct. Red? Really?
- Natural hybridization, introgression breeding, and cultivar improvement in the genus Actinidia. We should collect new material in natural hybrid zones.
Yam secrets revealed
I ran across an interesting article in The National newspaper last week in PNG, but I can’t find it online, so I’m posting a scan of it below. You should be able to read it ok if you click on it. It’s worth it. How can anything with the title “Secret Abelam yam initiation exposed” not make for fascinating reading.
The Abelam people are from East Sepik province and their life — especially the life of the men — revolves around yams:
Among the Abelam, the yam cult is a unique cultural institution and the focus of male existence. It involves men striving to produce long tubers (up to a length of 6 feet/180 cm or more), in intense competition with a long term partner in a neighbouring village. There are two major ritual cycles in Abelam life, both centred on this cult — initiation ceremonies which instruct young men in the magic and skills required to grow the prized long yams, and yam growing ceremonies and rituals designed to ensure the success of the current crop.
There are also yam festivals after harvest:
The actual yam displays are very festive occasions. Yam growers from rival villages generally arrive together on the morning of the event. When they are all gathered, the yams, which have been concealed behind barriers and decorated with shell, feather, and basketry ornaments, are carried onto the ceremonial ground. Each waapi is attached to a pole, and carried by two men, one at each end. As the yams are paraded, guests show their approval of their rivals’ efforts by putting special leaves (naarendu) or lime on particularly good specimens. Subsequently the waapi are lined along wooden frames in front of the ceremonial houses where they are carefully inspected and measured by ritual exchange partners. Following the inspection, rivalrous songs, particularly on the themes of yam exchanges and warfare, are sung by individuals. Groups and individuals may claim victory in these song contests by virtue of “evidence” and superior oratory.
It all sounds very spectacular. And extremely important:
…ceremonial yams have an important political function: to a large extent, male status, prestige, and power are dependent on the size and quality of ceremonial yams grown.
In addition to their importance in the political arena, “long yams” have considerable expressive content. Since all yams are propagated vegetatively, yams also form a link between living Abelam men and their ancestors, who planted genetically identical yams. Abelam often invoke their ngwaalndu (clan ancestral spirits) when growing and tending yams. The link between a man, his ceremonial yams, and his ngwaalndu is very close. Yams are of paramount social, symbolic, and religious importance to the Abelam people.
The species involved are Dioscorea alata (waapi) and D. esculenta (jaambe). These are under pressure in some parts of Papua New Guinea, being replaced by recently introduced African species, which seem to withstand pests, diseases and drought somewhat better, I was told. This doesn’t yet seem to be the case for the Abelam, but I wonder for how long. Maybe aeroponics is the answer?