Did you know that…
[t]he edible fungus Monascus purpureus imparts a distinct flavor and red color when added to fermented rice dishes such as those served in Asia.
Neither did I. But the boffins at USDA do.
Happy 25th, LEISA!
LEISA Magazine has chosen a fitting theme to celebrate its jubilee: diversity.
It expresses itself in many ways. There are diverse landscapes and ecosystems, diverse ways of life, diverse crops and agricultural systems. Small farms have been naturally benefiting from the diversity in their natural environment.
I wont even try to summarize. The contents are here. To the next 25 years!
Wild fruit relatives threatened in Central Asia
Fauna & Flora International and Botanic Gardens Conservation International (BGCI) have published a Red List of Trees of Central Asia. This is part of the Global Trees Campaign.
The new report identifies 44 tree species in Kyrgyzstan, Kazakhstan, Uzbekistan, Turkmenistan and Tajikistan as globally threatened with extinction. Many of these species occur in the unique fruit and nut forests of Central Asia, an estimated 90% of which have been destroyed in the past 50 years.
One of the threatened fruit trees is the red-fleshed Malus niedzwetzkyana, from Kyrgyzstan.
Working with the Kyrgyz National Academy of Sciences, the Global Trees Campaign is identifying populations of this rare tree in Kyrgyzstan and taking measures to improve their conservation. With distinctive red-fleshed fruit, the Niedzwetzky apple is an excellent flagship for the conservation and sustainable management of this beleagured forest type.
The report is available online.
Policy advice for Europe
A modest proposal from the Network Semences Paysannes:
Levy a tax on the sale of seeds which cannot be freely reproduced, and earmark the money for the financing of seed houses and collaborative breeding programmes.
That’ll work.
Modern rice varieties (can sometimes) increase genetic diversity
People say that introducing high-yielding crop varieties threatens agricultural biodiversity. Farmers adopt the modern varieties and abandon their traditional varieties, so that the overall genetic diversity falls as a result. They’re right, but not every time. A new paper published online in Field Crops Research 1 shows that genetic erosion need not be the unintended consequence of high-yielding varieties, especially if the modern varieties count farmer varieties among their parents.
In the early 1990s, while a PhD student at Bangor University in the UK, our friend Bhuwon Sthapit, now a senior scientist at Bioversity International, was instrumental in breeding three new varieties of rice suitable for upland rice farms in Nepal. This was no ordinary breeding programme, however. Sthapit worked closely with farmers, who both set the goals of the breeding programme and participated in the selection of the final varieties from the many crosses. The varieties were selected from crosses of Chhomrong Dhan, a local landrace well adapted to the cold conditions of high-altitude rice farms in Nepal, with Fuji 102 and IR36, more productive material from international breeding programmes.
Farmers selected three lines: Machhapuchhre-3 (M3), Machhapuchhre-9 (M9, which is similar to M3 but with lower cold tolerance) and Lumle-2 (L2, like M3 with better grain quality and easier threshing). Only M3 was officially released, but M9 and L2 have been adopted widely thanks to informal seed exchanges among farmers. By 2004 about 60% of the land in the study villages was sown to one of the three COB (client-oriented breeding) varieties, while traditional varieties occupied the remaining 40%. In adopting the COB varieties, many farmers had dropped traditional landraces, but there was no clear pattern to which landraces were dropped in which villages. The variety dropped most commonly was Chhomrong Dhan, one parent of all three COB varieties.
To assess genetic diversity, Sthapit and an international team of the researchers from Bangor and Nepal analyzed DNA from the three COB varieties, a random selection of landraces and a control group of modern varieties. Overall, genetic diversity was greatest in the landraces, and least in the COB varieties. However, there was no loss of genetic diversity across the district as a whole, at least as long as the three COB varieties were adopted on less than about 65% of the land. Indeed, because the high-yielding parental varieties contribute alleles not previously known in the area, there is an increase in diversity as the COB varieties are adopted .
Another crucial result is that although some farmers grow COB varieties on 100% of their land, nevertheless, at least 11 diverse landraces survived on some 40% of the land. These landraces clearly meet needs not fulfilled by the COB varieties. For example, although the most commonly dropped variety was Chhomrong Dhan, farmers in the Gurung community continued to grow that variety.
“It is the preferred rice for preparation of the dish Madeko Bhat used during funerals and other ritual and social ceremonies,” Sthapit told us.
“The conclusion is clear,” Sthapit added. “Participatory breeding and client-oriented breeding programmes should choose locally adapted varieties as parents for breeding. It ensures that landrace genes are conserved and increases the likelihood that the breeding programme will succeed.”