- Environmental health impacts of feeding crops to farmed fish. Wild fish is being replaced by plant-based food, which is both good and bad.
- Traditional Banana Diversity in Oceania: An Endangered Heritage. Pacific starchy bananas are all AAB, but fall into 2 genetic subgroups and 3 morphotypes. Persistence of diversity is linked to persistence of traditions.
- Gene-based SNP discovery in tepary bean (Phaseolus acutifolius) and common bean (P. vulgaris) for diversity analysis and comparative mapping. Two groups in domesticated teparies, plus the even more distinct wild. Close similarity with common bean means genes could be moved between the two species.
- Unlocking the genetic diversity of Creole wheats. Wheat has had long enough to adapt to different Mexican environments.
- Enhancing Legume Ecosystem Services through an Understanding of Plant–Pollinator Interplay. Legume breeders should consider functional floral traits.
- Genetic Relationships among Tall Coconut Palm (Cocos nucifera L.) Accessions of the International Coconut Genebank for Latin America and the Caribbean (ICG-LAC), Evaluated Using Microsatellite Markers (SSRs). The Brazilian material came from Africa.
- Characterization of Natural and Simulated Herbivory on Wild Soybean (Glycine soja Seib. et Zucc.) for Use in Ecological Risk Assessment of Insect Protected Soybean. If transgenes conferring insect protection were to escape to the wild soybean in Japan, it would probably not have any effect on its weediness.
Brainfood: Genebanked clover, Breeding beans, Belgian dogs, Optimization, Migration & diversity, Vanuatu roots, Japanese rice history
- Morphological and phenological consequences of ex situ conservation of natural populations of red clover (Trifolium pratense L.). Regeneration has caused directional morphological changes.
- Breeding Common Bean for Resistance to Common Blight: A Review. A lot is known and has been done, but, still, “Andean and Middle American common bean cultivars with high levels of combined resistance to less-aggressive and aggressive bacterial strains in all aerial plant parts are not available.”
- Half of 23 Belgian dog breeds has a compromised genetic diversity, as revealed by genealogical and molecular data analysis. Especially native breeds with small populations, unsurprisingly.
- Neither crop genetics nor crop management can be optimised. Because of ever-present trade-offs.
- The Influence of Gender Roles And Human Migrations on the Distribution of Crop Biodiversity in Tharaka, Kenya. Crops move with people, and different genders move different crops.
- Somaclonal variants of taro (Colocasia esculenta Schott) and yam (Dioscorea alata L.) are incorporated into farmers’ varietal portfolios in Vanuatu. Farmers have lots of varieties, but they need more variety.
- Morphological and molecular genetics of ancient remains and modern rice (Oryza sativa) confirm diversity in ancient Japan. Modern Japanese rice is a subset of ancient Japanese rice.
Nibbles: Dog origins, Dutch wheat trials, Chinese agricultural origins, Grass endophytes
- This origin-of-dogs saga is getting tedious. Figure it out, already.
- Dutch wheat varieties still improving.
- Chinese ate wild grasses for 20,000 years before domesticating crops.
- Fungal endophyte helps tall fescue cope with drought and high temperatures, but some fungal genotypes more than others. And some do it without producing livestock toxins.
Transforming agriculture in Africa
I challenged our friend Andy Jarvis to summarize his just-out paper (with assorted co-authors) in Nature Climate Change ((Rippke, U., Ramirez-Villegas, J., Jarvis, A., Vermeulen, S., Parker, L., Mer, F., Diekkrüger, B., Challinor, A., & Howden, M. (2016). Timescales of transformational climate change adaptation in sub-Saharan African agriculture Nature Climate Change DOI: 10.1038/nclimate2947)) in a tweet, and this is what he came up with:
@AgroBioDiverse Model maps where + when farmer must change staple crop: beans, banana + maize hit most; sorghum, millet + cassava to rescue.
— Andy Jarvis (@ajarviscali) March 7, 2016
Not bad, but let’s unpack it a bit. Andy and his colleagues ran climate models for sub-Saharan Africa and looked at what would happen over the course of this century to the areas where different crops are currently being grown. Crucially, they tried to figure out when it would become untenable to continue growing a given crop in a given spot, thus triggering a switch to another crop altogether. Absent, that is, some kind of adaptation, such as bringing in varieties better suited to the new conditions, or altering agronomic practices.
As Andy says in his tweet, beans, banana and maize are the worst hit: farmers in 60% of the current African bean area, and about 30% of that of the other crops, will need to think about some other crop at some time during the 21st century. That hits home, as people who follow this blog will know that my mother-in-law’s farm is in maize-and-beans country. Well, fortunately, the highlands of central Kenya do not seem, in this analysis, to be too badly impacted. But what are the descendants of my mother-in-law’s equivalents in the dryer parts of East Africa, and in southern Africa, to do?
…farmers in the maize-mixed farming system might, in the long run, shift to more drought-tolerant cereals such as millet and sorghum, which we identify as viable substitutes in many locations, although these may experience yield reductions.
Alas, there’s more:
…in some areas in the southern Sahel and in dry parts of Southern and Eastern Africa even these drought-resilient crops might become increasingly marginal. For these areas, a more drastic transformation to livestock might be necessary, because cropping might not be a viable livelihood strategy in the long run.
Scary. Better get breeding.
Nibbles: CC & death, GBIF enhancements, Killer fungi, Lion trees, Old oaks, Gourmet ganja, Wild horses, Resistant cassava, Contested agronomy, p-values
- Climate change is going to hit us where we live. Or die.
- How to make GBIF more relevant for agrobiodiversity: a 10-point plan.
- Killer fungi on the loose? ‘Twas ever thus. But genomics will save us?
- Planting trees is good for lions too.
- There are still medieval oaks in England.
- “…where sommelier-like ‘budtenders’ sell gourmet ganja in a designer showroom.”
- Rewilding the wild horse.
- More about the cassava variety Kasetsart 50, poster child for CGIAR impact.
- It’s not just genetic resources that are contested. Yep, agronomy too.
- “Scientific conclusions and business or policy decisions should not be based only on whether a p-value passes a specific threshold.”