- Resistance and Tolerance to Root Herbivory in Maize Were Mediated by Domestication, Spread, and Breeding. Domestication and spread decreased maize resistance to Western corn rootworm, but breeding increased it.
- Does genetic diversity protect host populations from parasites? A meta‐analysis across natural and agricultural systems. Yes, but it depends. Western corn rootworm unavailable for comment.
- Genome of Solanum pimpinellifolium provides insights into structural variants during tomato breeding. Lots of variants in regulatory genes for agronomic traits, compared to domesticated lines.
- Genomic evidence for recurrent genetic admixture during the domestication of Mediterranean olive trees (Olea europaea L.). There was a domestication bottleneck back in the day, but that was almost wiped out by later repeated introgression from the wild relative as the crop spread. So quite different from the above maize and tomato cases?
- Multi-parent populations in crops: a toolbox integrating genomics and genetic mapping with breeding. Not just good for QTL mapping any more, but you need a whole package of stuff for them to be useful to breeding programmes.
- Current uses of Andean Roots and Tuber Crops in South American gourmet restaurants. None of the chefs interviewed knew of mauka, but it’s not their fault.
- Payments for agrobiodiversity conservation services: An overview of Latin American experiences, lessons learned and upscaling challenges. Conserving in situ 100 varieties on 5 hectares each would cost US$70,000 p.a. Maybe useful for mauka? But will chefs pay?
- Genetic and agro-morphological diversity in global barley (Hordeum vulgare L.) collection at ICARDA. Under heat stress, though, which is the important bit left out of the title. Unclear if any of the material was from the Canaries (see below), but I can find out if anyone’s interested. Come to think of it, I’m kinda interested myself…
- An Evolutionary Approach to the History of Barley (Hordeum vulgare) Cultivation in the Canary Islands. You can apparently infer historical extents of cultivation on different islands in the archipelago, as well as the timing of separation of populations, which is pretty amazing. No word on representation in rock art though (see below).
- Enset (Ensete ventricosum) and the Archaeology of Southwestern Ethiopia. Information comes mainly from megalithic and rock art sites, which is pretty amazing. No word on genetic relationships, at least in this paper. Do you need me to link to previous Brainfoods on enset? No, of course you don’t, you know how to search the archive. You just put your lips together, and
whistleblow (kudos to whoever quotes the reference in the comments first). - Relict Plant Communities at Prehispanic Sites in Oaxaca, Mexico: Historical Implications. Ancient native Mexicans really liked succulents around their settlements. Well, who wouldn’t, when all is said and done?
- To clean or not to clean: Cleaning open‐source data improves extinction risk assessments for threatened plant species. Clean. Always clean. And then clean again.
- Global Patterns and Drivers of Bee Distribution. Hope they cleaned the data or this unusual double-humped diversity pattern could be in trouble, and that would be a pity.
Nibbles: Tea podcast double, African soil map, Chinese seeds
- Tea, anyone? Jeremy delves into how Brits made tea, and vice versa.
- More tea? Lawrie Taylor looks at the dark side.
- Want to know what the soil is like on African tea farms? Try iSDAsoil. Let the mashing up with crop accession locality data begin…
- Want to know what happened to those other seeds that came out of China?
Brainfood: Extension, Wheat adoption, Bean ideotypes, Chilli evaluation, Rice domestication, Mungbeans from space, Biodiversity accounting, Cassava futures, Maize haplotypes, Heterosis, Cryo
- Does it matter who advises farmers? Pest management choices with public and private extension. Yes, at least in Switzerland. Public = prevention, private = cure. Well colour me surprised.
- Ethiopia’s transforming wheat landscape: tracking variety use through DNA fingerprinting. Only 28% of farmers correctly named their wheat varieties, many of which were from CGIAR breeding programmes.
- Analysis of the Similarity between in Silico Ideotypes and Phenotypic Profiles to Support Cultivar Recommendation—A Case Study on Phaseolus vulgaris L. Italian farmers not great at keeping track of new varieties either, but who needs names when you have fancy maths?
- Morphological, Sensorial and Chemical Characterization of Chilli Peppers (Capsicum spp.) from the CATIE Genebank. From 192 accessions to this little beauty from Panama.
- Two divergent chloroplast genome sequence clades captured in the domesticated rice gene pool may have significance for rice production. Rice is from Mars, rice is from two Venuses.
- Identification of Mung Bean in a Smallholder Farming Setting of Coastal South Asia Using Manned Aircraft Photography and Sentinel-2 Images. From 10-m imagery for pity’s sake! Amazing stuff. Soon we’ll be able to distinguish landraces from modern varieties, right? Right?
- Linking biodiversity into national economic accounting. Yikes, biodiversity makes no contribution to agricultural development at all?
- High sink strength prevents photosynthetic down-regulation in cassava grown at elevated CO2 concentration. Could result in higher yields, but effect will vary among varieties.
- Discovery of beneficial haplotypes for complex traits in maize landraces. Landrace diversity for early plant development, robustness and growth form that could be useful in Europe made accessible.
- Understanding the classics: the unifying concepts of transgressive segregation, inbreeding depression and heterosis and their central relevance for crop breeding. It’s the dispersion of favorable alleles between parents.
- Challenges and Prospects for the Conservation of Crop Genetic Resources in Field Genebanks, in In Vitro Collections and/or in Liquid Nitrogen. Everything that can be in cryo should be in cryo, and some things that currently can’t too.
Nibbles: Seedscapes, Bee map, Sacred bananas, Sustainable eating, Hazelnuts, Investing
Diversify your landscapes redux
I originally published this post on 29 July, but then Dr Baudron pointed to two additional papers on Twitter, and then later to another one, so I’m re-upping, for the second time, with a sixth bullet point.
There’s a nice series of papers on the benefits of diverse landscapes in Ethiopia from Frédéric Baudron of CIMMYT and others.
Just in case this tweet disappears, or whatever, here are the links:
- Wheat yields and zinc content are higher closer to forests because of elevated organic matter in the soil.
- Diets are also more diverse nearer forests.
- Livestock (but not crop) productivity is higher nearer forests, and smallholder systems generally more sustainable.
- Bird diversity benefits from tree cover too, and that provides important ecosystem services to smallholders.
- Even limited reforestation in the surrounding landscape is associated with higher wheat yields in simulations, and you can potentially measure it from space.
- “More people, more trees.”