Category: Breeding

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Broadening the genetic base of cucumbers

An American cucumber breeder, Jack Staub, is collaborating with Chinese scientists to bring fresh DNA into the modern cucumber. The hope is that this will give new cucumber varieties the genetic breadth to withstand droughts and diseases. The story started 12 years ago, when Staub crossed domestic cucumbers with a newly-discovered wild Chinese variety. It wasn’t easy to get the results of the cross to grow, but now the hybrids are being evaluated to see what they might contribute to domestic cucumbers. The next step, says Staub, is to cross the cucumber with wild melons, which are closely related and which might also be able to donate valuable traits to the crop.

The story is just one of several about vegetable breeding in the latest USDA magazine.

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Climate change and wine

Over at CABI’s blog there’s a great post summarizing some recent research on the possible effects of climate change on the wine industry. The grapevine is very sensitive to temperature and rainfall, making it a useful indicator of environmental change. Predictably, there will be both winners and losers among the traditional wine growing areas. Not quite sure how the average consumer will come out of it, but wine bores will have a whole new area of expertise to get to grips with.

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White grapes are mutants

Thought that would get your attention. Actually, what the research summarized here revealed was that a couple of genes mutated independently thousands of years ago in the ancestor of the modern grapevine, whose berries were red. The resulting white variety proved to be the ancestor of almost all of the 3000 or so white grape varieties we have today. This discovery from CSIRO will apparently be useful in marker-assisted breeding.

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Breeding orphan crops for Africa

News arrives of a conference on New approaches to plant breeding of orphan crops in Africa. To be held from 19-21 September 2007 in Bern, Switzerland, the conference promises to

“bring together scientists both from developed and developing countries and discuss techniques that could be implemented in a scheme of orphan crops improvement. In addition, future prospects and feasibility of modern biotechnology in African agriculture will be addressed. Success stories will also be presented by prominent scientists.”

All fine and dandy, of course, and we’re looking forward to the results. But we’re impatient. So here’s our offer: if you’re going to the conference, why not become a guest blogger for the occasion?

We’ll supply everything you need — a user identity, a password, even some basic training. All you need is the motivation, the computer, the ticket to Bern etc etc. And in return, we can offer the undying gratitude of lots and lots of readers. How about it? Use the form to contact us, or just send an email.

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Audible Darwin

It is easy to forget sometimes that The Origin of Species actually starts with a lengthy discussion of genetic diversity in crops, ornamentals, livestock and pets, although of course Darwin doesn’t call it that. He calls it “variation under domestication,” and you can now hear his seminal words, by downloading 24 hours’ worth of audio files from here. There’s a also a link to an e-text of the book.