- 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!
Brainfood: Livestock cryo, Yeast evolution, PAs & CC, Genomes, Trifolium ambiguum, Earthworm map, Photosynthesis double, RCTs, Brown rice, DH maize, Breed performance maps
- Genetic Cryopreservation of Rare Breeds of Domesticated North American Livestock: Smithsonian & SVF Biodiversity Preservation Project. 106,109 “units of germplasm” from 39 breeds.
- Interspecific hybridization facilitates niche adaptation in beer yeast. Chimerization is not a word I thought I would ever see in a beer context. Anyway, thank goodness for feral yeasts and their propensity for miscegenation.
- Predicted climate shifts within terrestrial protected areas worldwide. PAs in temperate and northern high-latitude will have high area proportions of novel climate conditions by the end of the century.
- Crop Genomics Goes Beyond a Single Reference Genome. Looks like we’ll always need another genome.
- Morphometric approaches to promote the use of exotic germplasm for improved food security and resilience to climate change: A kura clover example. Fancy maths used to describe the hell out of a small collection of an underused clover.
- Global distribution of earthworm diversity. Peaks at higher latitudes, but higher overall in the tropics.
- Natural genetic variation in photosynthesis: an untapped resource to increase crop yield potential? Sounds like it.
- Increasing Photosynthesis: Unlikely Solution For World Food Problem. Ok, maybe not.
- What role should randomized control trials play in providing the evidence base for conservation? A bigger role that currently, but watch out.
- Brown Rice, a Diet Rich in Health Promoting Properties. Mill less.
- Loss of diversity and accumulation of genetic load in doubled-haploid lines from European maize landrace. DH not a panacea.
- Maize agro-food systems to ensure food and nutrition security in reference to the Sustainable Development Goals.
- Using phenotypic distribution models to predict livestock performance. Niche models + performance.
Nibbles: Pepper picking, Ancient goats, Ipomoea, Manuka honey, Language conservation, USDA sorghum
- Breeding chillis for mechanization.
- Long, but very engaging, video on zooarchaeology in general and goat bones in particular.
- Delving into the origins of the sweetpotato at CIP.
- Cultivating Leptospermum scoparium for honey.
- Saving languages.
- Jasmonic acid is bad for sorghum yields.
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 ((Chomicki, G. , Schaefer, H. and Renner, S. S. (2019), Origin and domestication of Cucurbitaceae crops: insights from phylogenies, genomics and archaeology. New Phytol. doi:10.1111/nph.16015.)) 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 ((Jayakodi, M., Schreiber, M. & Mascher, M. Sweet genes in melon and watermelon. Nat Genet 51, 1572–1573 (2019) doi:10.1038/s41588-019-0529-1.)), who mash up the two studies. ((Here’s another mash-up.)) 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.
One-man root and tuber breeding show comes to town
Welcome to Cultivariable! My name is William Whitson and I breed plants. Cultivariable is my business, where I sell the plants that I breed and, miraculously, seem to be making a living at it. I breed plants for fun, because I am interested in discovering the possibilities. I’m not changing the world here. My discoveries are not going to feed the starving masses, save us from climate change, or expand the frontiers of science, but they might feed you if you grow them. This is mostly a one-man show, meaning that I do everything from weeding to stuffing envelopes alongside the actual breeding work.
William also put together a pretty nice website, from which you can order his stuff. Particularly impressive is his single-minded determination of fully characterize the USDA potato collection. Well worth supporting.
