One item of agricultural biodiversity interest from my visit to Bologna last weekend, this rather charming 1926 poster. 1 It offers, as you can see, American vines. And here’s my question: varieties, or Phylloxera-resistant rootstocks?
Livestock are how much?
I just think you should see this, from my favourite comic on the web.
Featured: Similarity groups
An item in Monday’s Brainfood prompted Brian Ford-Lloyd to revisit the concept of core collections. The paper looked at “similarity groups” in genebank holdings.
One important question they addressed was ‘why identify similarity groups?’ (not to be confused with duplicates), and only time will tell whether their expectations will be met.
However, there are other issues that occurred to me. One is the relationship with ‘core collections’ (which are not mentioned in the article) of which there are now many, even for a single crop such as rice, and which are proven to be of considerable use (see: Genetic resources and conservation challenges under the threat of climate change, Ford-Lloyd, Engels and Jackson – in Plant genetic resources and climate change – Jackson, Ford-Lloyd and Parry, 2014) (sorry for the plug!). So, having identified similarity groups, is it now necessary to go back and redesign core collections? This seems unlikely, but it would perhaps be worthwhile checking core collections to see the extent of occurrence of ‘similar’ accessions. This might have particular value, not necessarily to ensure maximised diversity within core collections. It might be useful to look for similar accessions to those that have already proved to be of value within core collections, possibly revealing similarly adapted accessions of even greater value.
Brainfood: Turkey genome, Nigerian livestock conservation, Seed viability, Peruvian pepper marketing, Wild D wheats, Rationalizing collections, English heirloom sheep, Model potatoes, Sweet potato leaves
- Next-generation sequencing strategies for characterizing the turkey genome. It never ends, does it. Meanwhile, we patiently await our jetpacks.
- Community-Based Management of Animal Genetic Resources (AnGR): Constraints and Prospects of AnGR Conservation in the Tropics. Best thing to do is improve the local breeds through village-level schemes. In Nigeria, that is.
- Comparison of seed viability among 42 species stored in a genebank. 80% loss in melon seed viability over 10 years sounds a bit high to me.
- Market Participation and Agro-Biodiversity Loss: The Case of Native Chili Varieties in the Amazon Rainforest of Peru. Selling to local retailers good for diversity, selling to wholesalers not so much.
- Stem and leaf rust resistance in wild relatives of wheat with D genome (Aegilops spp.). They all have it.
- Assessing rice and wheat germplasm collections using similarity groups. You can go quite far in identifying possible duplicates just with. passport data.
- Genetic Distinctiveness of the Herdwick Sheep Breed and Two Other Locally Adapted Hill Breeds of the UK. Close to each other geographically and ecologically, but quite genetically distinct. No word on whether village-level improvement necessary for their continued existence.
- Managing Potato Biodiversity to Cope with Frost Risk in the High Andes: A Modeling Perspective. Fancy maths confirms better to grow mixtures. Andean farmers nonplussed.
- Sweet potato (Ipomoea batatas L.) leaves as nutritional and functional foods. But they taste like shit. Just kidding, they’re good and good for you.
Rice diversity on display
Some great photos of the Genetic Resources Centre Annual Field Day over on IRRI’s Flickr site. IRRI’s breeders are invited to visit the genebank’s seed multiplication plots every year, to see if anything grabs their eye. The chessboard effect is due to sowing early and late varieties in an alternating pattern. I’m assured the contrast “is becoming more pronounced each year as the supporting data improve.” See for yourself by comparing with previous years.
