Nibbles: NERICA vs landraces, Asian breeding, Wild wheat threats, Indian agrobiodiversity area, GBIF, Ancient Amazonia

  • NERICA shmerica.
  • Did you know that the Society for Advancement of Breeding Research in Asia and Oceania (SABRAO) 12th Congress from 13-16 January 2012 in Chiang Mai, Thailand. No, neither did I.
  • Whither wild wheat?
  • Koraput and its agrobiodiversity, including aus rice, makes it on the Globally Important Agricultural Heritage System (GIAHS).
  • GBIF has many duplicates. I’m shocked. Shocked, I tell you.
  • Amazonia was densely populated. No it wasn’t. Yes it was. No it wasn’t.

Brainfood: Chestnut restoration, Zoo legislation, Millet landraces, Cassava in Congo, Agroforestry in Philippines, Baobab (again), Silvopastoral system taxonomy

Rice morphological diversity 1, Bloggers 0

Ruaraidh Sackville Hamilton of the IRRI genebank points out we are confusing clustered spikelets with multi-grained spikelets. Sorry.

Clustered spikelets are more common, and are recognized in the rice descriptors. We have 254 such varieties from 26 countries, mostly in S and SE Asia. Spikelets may be borne directly on the long primary branches of the panicle and/or on short secondary branches, in varying proportions. If none are directly on primary branches, or on the short secondary branches, they appear as clusters of three spikelets. See fig. 8 in the 2008 rice descriptors publication.

The multi-grained spikelets noted by Zakir are more unusual – multiple grains in single spikelets.

Old literature on developmental anatomy concludes that rice spikelets are primitively three-grained, of which the two lateral have become vestigial (hence “sterile lemma”). It would be interesting to know if the multi-grained spikelets are a reversion to primitive type, or a new splitting of the central grain.

Triple-grained rice news

In this pre-digital, and alas out of focus, photo, a triple spikelet is visible above the thumbnail.

What it is to have friends, especially knowledgeable friends. Bhuwon Sthapit, local rice wallah extraordinaire, ((I do hope that’s not a derogatory epithet. Let’s just say he knows more about rice than anyone I’ve ever met.)) responded quickly and in depth when asked what he knew about triple-grained rice.

In this pre-digital, and alas out of focus, photo, a triple spikelet is visible above the thumbnail.
In this pre-digital, and alas out of focus, photo, a triple spikelet is visible above the thumbnail.

Unique local rice landraces in Nepal are being lost, replaced by modern varieties. At least two of these are multi-seeded: Laila Majnu (the name refers to a pair of famous lovers, never separated until death) and Amaghauj (which means cluster of mango). Until 1999 Amaghauj was grown by one farmer on 3 katha of land, but was discontinued as the land was sold to another farmer. This local variety has a cluster of spikelets (at least 3 potential grains) originating from the same base; this heritable trait could potentially be used to breed new rice types offering increased yield. It is currently saved in community seed banks.

As Bhuwon also notes:

There is great potential to link community seed bank and national seed bank to harness such untapped and unknown resources.

And if you want even more, another friend, Ruaraidh Sackville Hamilton, Head of the IRRI genebank, points to Morphological Observations on Many Kerneled Grains in Rice. Don’t be scared by the Chinese; English follows.

LATER: For completeness, the name of the Bangladeshi variety which started all this, Biram Sundori, means “beautiful girl from Birampur,” which is the place where it is grown. Thanks to Zakir Sor for leading us all on this journey of discovery.

Nibbles: Forests and agriculture, Seed collecting, Banana book, Fermentation, Cucumber history, Myrrh, Farm systems, Dog genetics, Chocolate wars

  • Seven forest myths exposed. And more on the work debunking one of them. Yeah I know we already Nibbled it, get over it.
  • And you know what, here’s another one we already Nibbled, on collecting seeds in Central Asia. But I just read it again in the hardcopy version and it’s really cool and I like seeing people I know in funny shorts. Incidentally, the dead tree version has a link to Vaviblog that is unaccountably missing online.
  • Will no one buy me this fabulous banana book? (Not if you keep being rude to your reader. Ed.)
  • Second installment of that we-farm-because-we-like-beer thing. I’m not sure about the theory, but I like the way this guy writes. Yes, it’s a little look at me, look at me. But sometimes you need that.
  • Tales of the cucumber. Does anyone remember if we blogged about this paper?
  • More to myrrh than meets the eye. And more than most folk need to know.
  • Oxford boffins say a pox on both your houses: “environmentally friendly” farms better than conventional and organic.
  • National Geographic tackles the dog. Amazingly, all the photos are of, ahem, dogs.
  • What’s with all this stuff about cacao lately? Has someone sequenced another variety or something?