- Developing Chloroplast Genomic Resources from 25 Avena Species for the Characterization of Oat Wild Relative Germplasm. Not many people hurt.
- Genetic diversity among cultivated beets (Beta vulgaris) assessed via population-based whole genome sequences. Genetic groups follow crop type, but with added complexity.
- Phenotypic Parent Selection within a Khorasan Wheat Collection and Genetic Variation in Advanced Breeding Lines Derived by Hybridization with Durum Wheat. That would be Triticum turgidum subsp. turanicum (Jakubz.) Á. Löve & D. Löve. These Italian researchers like the cut of its jib.
- The Fate of Deleterious Variants in a Barley Genomic Prediction Population. Avoiding the cost of domestication.
- Reframing the sustainable seafood narrative. Sustainability is about more than just ocean health, and more than just producers.
- Maize agro-food systems to ensure food and nutrition security in reference to the Sustainable Development Goals. Focus on nutritional value.
- Net Gain: Seeking Better Outcomes for Local People when Mitigating Biodiversity Loss from Development. Participation is the key.
- Determinants of breeders’ participation to an indigenous cattle breeding program. Social, family and institutional relationships are as important as distance or production systems.
- A global-level assessment of the effectiveness of protected areas at resisting anthropogenic pressures. Not very effective on average, but somewhat more effective in rich countries, and in forests.
- A Return to the Wild: Root Exudates and Food Security. The next frontier?
- Exploring the Genetic Diversity of Wild Cranberry Populations in the Upper Midwestern United States. Still work to do on the old frontier.
- Evaluation and Identification of Promising Introgression Lines Derived From Wild Cajanus Species for Broadening the Genetic Base of Cultivated Pigeonpea [Cajanus cajan (L.) Millsp.]. Some made it into the all-India initial varietal trials, no less. Take that, root exudates!
The sweetest things
There’s been a lot of action on the cucurbit domestication front lately. Hot on the heels of a comprehensive Tansley review of all the crops in the family in New Phytologist 1 now come two papers out of the Chinese Academy of Agricultural Sciences focusing on the melon and watermelon:
- Zhao, G., Lian, Q., Zhang, Z. et al. A comprehensive genome variation map of melon identifies multiple domestication events and loci influencing agronomic traits. Nat Genet 51, 1607–1615 (2019) doi:10.1038/s41588-019-0522-8.
- Guo, S., Zhao, S., Sun, H. et al. Resequencing of 414 cultivated and wild watermelon accessions identifies selection for fruit quality traits. Nat Genet 51, 1616–1623 (2019) doi:10.1038/s41588-019-0518-4.
There are press releases on each of these, of course. But the more interesting take is provided by some IPK researchers 2, who mash up the two studies. 3 And provide a nice graphic to summarize the whole thing.
The bottom line(s)? The two different subspecies of melon acquired sweet flesh through different mutations, independently but probably both in India; there was a third domestication event in Africa, but the authors had too little material at hand to say much about this. Melon and watermelon lost their bitterness through convergent evolution, and the latter has benefitted from introgression from two wild relatives, one of which was separately domesticated for its seeds.
Nibbles: Root & tuber breeding, Potato fun, Melon domestication, Maize conservation, Millet diversification, Business as usual
- A backyard breeder evaluates USDA’s potato accessions. Among other things.
- The Onion roasts potatoes.
- How melons got sweet.
- Mexican Senate considers in situ/on farm conservation areas for maize.
- Millets for climate change resilience in India.
- Business for biodiversity. Yeah, right.
Genebanks everywhere on NPR
Just realized that my last two stories involved gene banks. Shouldn't there be some sort of award for that?
— Dan Charles (@DanCharlesNow) October 31, 2019
I’m all for it, but judge for yourselves. Here are the two stories involved:
- From Culinary Dud To Stud: How Dutch Plant Breeders Built Our Brussels Sprouts Boom. By looking into their genebanks, of course, to find less bitter varieties.
- Most U.S. Dairy Cows Are Descended From Just 2 Bulls. That’s Not Good. But fortunately there’s heritage semen in the fridge.
Nibbles: How-to trifecta, Indigenous maps, ITPGRFA, SeedLinked, Tequila
- The Center for Plant Conservation has Best Plant Conservation Practices to Support Species Survival in the Wild. With online forum goodness.
- A little bit down-market, there’s What Are Seed Banks: A Complete Guide.
- How Do We Preserve the Vanishing Foods of the Earth? Good question, and nice article, but there’s surely more to the answer than what it says.
- Like indigenous people.
- And the Plant Treaty. Here’s two provocative briefing papers on that from the African Centre for Biodiversity in the run-up to the Governing Body meeting in November.
- Oh, and breeding. Even crowd-sourced breeding.
- Let the tequila industry show you what to do, in fact.