Category: GIS

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More on cassava germplasm from Brazil

You might remember a post from a couple of weeks back comparing the localities of cassava accessions in Genesys (mostly conserved at CIAT) with cultivation of the crop in Brazil. I ended that little piece with the observation that when data from the national genebank system of that country finally makes its way into Genesys, which should not be long now, it will be possible to really figure out where the gaps are in the “global” collection of the crop. Well, as it happens, there was a Tweet just recently which included a photo of a map of where Embrapa’s cassava accessions come from:

So, quick as a flash, I imported it into Google Earth as an image overlay, and after much fiddling to make it fit on top of the background provided by GE (only partially successfully), was able to compare it with the accessions in Genesys:

The two sets of accessions (red for Embrapa, yellow for CIAT) look nicely complementary at a glance. Maybe the gaps in one collection are adequately covered by the other, and vice versa (which of course then brings up the issue of safety duplication, but that’s another post). Or maybe not: this is a really crude way of looking at the data. But it does point to the importance of data sharing and the need for collaboration among genebanks, national and international.

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Brainfood: Definitions, Atlantic goats, Sorghum photoperiod, Maize erosion, Dactylis diversity, Chickpea diversity, Social media, TR4, Diet change

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Brainfood: Seed libraries, Nepali veggie seeds, Agricultural ES, Zn rice, Sub rice core, SoD, D2N, Root crops knowledge, Horse diversity

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Yes, we have plenty of banana information

I’ve come across a number of banana-related resources lately, so I thought I’d pull them all together in one post.

First, there’s CropMapper.org, from Bioversity, which “aims to collect, to make available and to share spatial information on global banana production in a single centralized database.”

Then there’s “Banana natural biodiversity mapping,” from iNaturalist. It’s objective is “to map the distribution of CWRs and landraces in primary and secondary centers of diversity” through crowdsourcing. Which I suppose could eventually be added to the more conventionally sourced data in the CWR Atlas.

And finally there’s blog post from IITA describing a project to document banana diversity in the Democratic Republic of Congo using morphological traits that have been overlooked in the past. I assume the data will find its way into the Musa Germplasm Information System. And thence to Genesys.

All these contribute to answering a question that I asked here back in 2010: Where do bananas grow anyway? What I still don’t see, though, is a way to bring all this information together in one place.

And, given that there’s collecting going on as we speak, for example, the information — and the need — will only grow:

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A Nibble big enough to choke on

Yeah, yeah, it’s been quiet here for the best part of a month. Work, you know. When you notice lack of action here, though, that doesn’t mean that I’m being completely idle. Not always, anyway. Check on Twitter and Facebook, if you dare, and you’ll see new stuff on a fairly regular basis, because that’s easier to do than a fully-fledged blog post. Anyway, what I’ll do here is a mega-Nibble hoovering up snippets from the past few weeks that I posted on social media but not here.