Author: Luigi Guarino

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The giant pumpkin story

Jules Janick, professor of horticulture at Purdue, wrote a wonderfully informative and entertaining brief history of giant pumpkins in last September’s Chronica Horticulturae (it starts on page 16). Regular competitions have been going on in the US since 1900, arising from state agricultural fairs.

The giant round orange phenotypes of C. maxima appear to be in a narrow gene pool out of “Atlantic Giant” (oblong phenotypes are called “Dill’s Atlantic Giant” developed by William Dill, a Canadian from Nova Scotia, Canada)… “Atlantic Giant” and related huge show pumpkins trace their origin to the cultivar “Mammoth,” recorded in the seed trade as far back as 1834…

Despite this narrow genepool, the genetic gains have been phenomenal (although of course cultural practices play a part too), as this graph of world records of pumpkin fruit weight from 1857 to 2007 shows:

pumpkin

The current mark stands at almost 800 kg. Seed of top specimens changes hands at huge prices (up to $850 for a single seed). Prof. Janick suggests that horticultural science has ignored this record of success.

Someone has accused academics in the agricultural arena of merely proving that the practices achieved by the best growers are correct. I suggest the academic and scientific community cooperate on this engaging problem for the delight of the public everywhere.

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Penis pepper finally reveals its identity

A weird, comma-shaped fruit is often to be seen “floating over the soldiers marching off to be sacrificed or flying priests” in the artwork of the Moche, an agricultural people that frequented the coastal plain of northern Peru from A.D. 100 to 800. That’s been recognized since the 1930’s, when archaeologists gave it the name ulluchu — meaning “penis pepper” because of its shape — but without actually been able to say what the fruit was. Modern-day Peruvians just don’t recognize it, and botanists need more to go on for a scientific identification.

They got it recently when the actual remains of a fruit were found during excavation of the the tombs of Dos Cabezas in the ancient Moche city of Sipan. Ethnobotanists Rainer Bussmann and Douglas Sharon had been asking around for ulluchu for years:

“We would go to these markets and people would say, ‘We think we know what that is, but it’s not being sold here,'” said Sharon, the retired director of the Phoebe A. Hearst Museum of Anthropology at the University of California-Berkley. “Well, one of the reasons it wasn’t being used is because the Ulluchu seems to show up during sacrifices. And no one is being sacrificed anymore.”

But armed with the physical specimens, desiccated as they were, Bussman, who works at the Missouri Botanical Gardens, eventually homed in on the genus Guarea, which is in the mahogany family, not the pepper.

“Rainer is a first-rate taxonomist,” Sharon said. “He studied every physical characteristic of these plants until he was absolutely certain we had it.”

Guarea seeds contain hallucinogenics and chemicals which raise blood pressure. Both would have been useful in sacrifices.

Bussmann, director of the garden’s William L. Brown Center for Plant Genetic Resources, plans to further study the plant’s chemistry and suspects it might have applications as a blood pressure and erectile dysfunction treatment.

The sacrificial soldiers in Moche artwork over which ulluchu fruits float often appear to have erections. Expect huge plantations to spring up in the Peruvian lowlands.

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Competing for heirlooms

The Independent has launched the Great British Butterfly Hunt.

In the Great British Butterfly Hunt we will seek to find and report on each one of our 58 varieties (56 residents and two Continental migrants)… We will report from right across the country on every single species.

But most importantly we are inviting you, the readers, to join us, and to see how many you can observe for yourselves. As the different species emerge at different moments of the spring and summer, we will be offering extensive guidance on identification and on how to find them. Some may well be in your back garden or local park. Others, especially the rarities, may involve a journey – albeit to the most beautiful parts of Britain.

To give an edge to it all, we are introducing an element of competition, and an unusual prize.

The person or group (such as a school class) which records the most species will win a special safari in late August, conducted by The Independent in conjunction with the charity Butterfly Conservation, to find the last butterfly of the summer – the most elusive of all the British species: the brown hairstreak.

A nice idea. Would it work for heirloom fruits and vegetables, say? Or pollinator species for that matter. Jeremy says they tried it at the Henry Doubleday Research Association ten years ago without a great deal of success. Any other examples out there?

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Featured: Baroque maize

Eliseu on the portrayal of maize peduncles in a baroque painting:

I think the peduncles are only to give a prominent look to the maize cobs and are the artist’s free interpretation of nature. However, I’ve seen maize cobs with long peduncles, so long that the ears would be pointing downwards, but didn’t look that straight, though!

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Baroque painting celebrates agrobiodiversity

I did not expect much agrobiodiversity in the Victoria & Albert’s exhibition on the baroque. But I found some anyway, in the mid-17th century Flemish oil painting Flower Garland with the Holy Sacrament and an Angel’s Head, possibly by Daniel Seghers (1590-1661). It’s reproduced below, but you can consult a better image on Flickr.

maize

It looks to me that what I’ve marked are maize cobs, although the one on the right could, I suppose, be sorghum. If they are maize, it is interesting that they seem to show three distinct varieties. There’s variation in the other cereals too. I guess it goes with the general exuberance of the baroque. But what’s with those peduncles?