21 things to know about seed systems

FAO has a 6-page leaflet out on “Seed systems – Twenty things you need to know.” It’s well-written and comprehensive. These are the 20 things, in case you were wondering:

  • What is a seed?
  • What makes some seeds better than others?
  • What is seed quality assurance?
  • What does it mean when seeds are “certified”?
  • What are “quality declared seeds”?
  • What work does FAO do on seeds?
  • What do seed policies aim to do?
  • What is seed security, and why is it important?
  • What does FAO do to help farmers after a disaster?
  • Why not just give food instead of seeds?
  • How do seeds help farmers recover after disasters?
  • Where does FAO get the seeds it gives to farmers?
  • How does FAO decide what kind of seed help to provide?
  • How do emergency seed responses help farmers become more resilient to future disasters?
  • What’s the difference between hybrid crop varieties and other types of varieties?
  • Are older, farmers’ varieties better than newer ones?
  • What would happen if we lost a crop variety?
  • How do farmers learn about new crop varieties?
  • How are harsh environmental conditions affecting crop varieties?
  • Does FAO tell farmers which crop varieties to use?

Comprehensive, as I say. Even genebanks get a shout-out:

Crop variety loss also reduces the diversity of our cropping systems, thus making them more vulnerable to stresses. That’s why conservation is so important. By safeguarding inter- and intra-specific diversity of crops in genebanks and through on-farm management of diversity varieties are prevented from disappearing forever, their useful traits are documented, and this diversity remains available for the current and future generations. Conserved varieties are an essential resource for plant breeders, as they can be sources of important traits, such as stress resistance or nutritional quality, to be incorporated into new crop varieties.

Though I would personally have maybe added a nod to the potential direct role of genebanks in seed systems. Feeding breeding pipelines is surely not the only way genebanks can make an impact, especially for so-called neglected and underutilized crops — or opportunity crops as we should now call them I guess.

Brainfood: Targets, Plant Treaty, Decolonization, Fonio germination, Recalcitrant seeds, Microbiome, Taro seed system

Gaps galore in collards collections

Quick follow-up to my post a few days ago on the recent study of the origin of the collard greens grown in the Moroccan oases of the Draa and Ziz valleys.

Ethnobotanists Bronwen Powell and Abderrahim Ouarghidi used historical texts, linguistics, and Indigenous knowledge in their investigation, but of course it’s also possible to use genetics to figure out where the plants may have came from. Especially as there are plenty of accessions labelled Brassica oleracea var. acephala in the genebanks that share their data on Genesys — just over 1500 in fact.

Alas, that might in practice turn out to be tricky, though, due to the somewhat — ahem — skewed geographic distribution of the accessions in question. The yellow circles in the map below show the approximate locations of those oases on the edge of the Sahara.

Still worth trying, in my view, but really more than anything this should be an encouragement to do some more collecting. Or get more genebanks on Genesys. Or identify more B. oleracea accessions to variety level. Or…

What else has been collected in the Draa and Ziz valleys or thereabouts? Surprisingly little, mainly wheat, barley, chickpea, faba bean and alfalfa. The general location of the valleys is now shown by white squares.

Incidentally, the. map below is where ChatGPT thinks collards are grown around he world. I really have no idea how accurate it is. I hope someone will tell us.

Brassica on the brink

How did collards get to remote oases on the edge of the Sahara? That’s what ethnobotanists Bronwen Powell and Abderrahim Ouarghidi have been looking into for like 20 years now, and it’s a fascinating story. Which you can read about in detail in their paper in Economic Botany. They also present an abbreviated form of the argument in The Conversation. Which got Nibbled some months back, though without giving anything away. But actually what I recommend you do is listen to Jeremy interview the intrepid duo in the latest episode of Eat This Podcast.