Topic: Growers Bid to Revive American Chestnut
Fanta46's photo
Fri 11/23/07 07:43 AM

Published: 11/22/07, 5:05 PM EDT
By RICK CALLAHAN
INDIANAPOLIS (AP) - Growing up in the 1920s, Bill Lord remembers feasting on the sweet, rich nuts of American chestnut trees - the majestic species that a fungus would soon all but wipe out.

More than a half-century after the prolific nut-producer became little more than the stuff of holiday songs, Lord is now part of a far-flung network of volunteers working to return the so-called "Redwood of the East" to the forests it once dominated.

The American Chestnut Foundation oversees a tree-breeding program with chapters in 15 Eastern states and is closing in on blight-resistant American chestnuts trees it hopes could revive the species.

Unless a new biological invader intervenes, the Bennington, Vt.-based group hopes to begin mass replantings in about a decade in the chestnut's original range from Maine to Mississippi.

Lord, an 86-year-old retired veterinarian from Plum, Pa., said reviving the tree would be a boon not just to people - for its handsome, highly rot-resistant lumber and tasty nuts - but to a wide range of animals.

"Bears, deer, rabbits, raccoons, crows, foxes - you could just go on and on," he said. "Bringing it back would greatly increase the food supply for wildlife, and we'd have a wonderful, fast-growing timber tree."

American chestnuts can grow to 120 feet. One tree in North Carolina had a trunk diameter of 17 1/2 feet.

The fungus that attacked the American chestnut likely arrived on imported Asian chestnut trees. It was first detected in 1904 in trees in New York City, and by 1950 some 3.5 billion trees - about 90 percent of the species - had died.

A few trees had limited resistance to the fungus and held on. Others died from the ground up but sprouted shoots that rarely reached maturity before they died in a repeating cycle.

The American Chestnut Foundation began a tree-breeding campaign in the late 1980s in a quest for trees that could ward off the fungus.

First, the towering American species with its picturesque form was crossed with its blight-resistant but squat Chinese counterpart. The resulting trees were a 50-50 mix of American and Chinese chestnut genetics.

Those trees are then selectively bred with surviving American chestnuts in a process called "backcrossing." The nuts produced by each successive backcross are planted and eventually pollinated with pure American chestnut trees, making each generation slightly more American.

Marshal Case, the American Chestnut Foundation's president and CEO, said the program has produced trees with 94 percent American chestnut DNA, and 6 percent of the Chinese tree's genes. Those trees are now being bred to select the ones with the highest resistance to the fungus. Each state chapter is producing versions best suited for its region.

The final product is years away, but the foundation has partnered with the U.S. Forest Service in a project to plant a mix of its American chestnut trees at six sites, from Tennessee to West Virginia. Case said those experimental plantings should begin within two or three years.

Despite the progress, there is still a threat of new invasive diseases or insects that could prey on the trees, and a type of root rot already is killing some young replanted chestnut trees.

Its hard to believe these trees used to be 70% of all trees on the East Coast!
It wiil be great to see them return!

karmafury's photo
Fri 11/23/07 07:47 AM
Right on!

Fanta46's photo
Fri 11/23/07 07:50 AM
This is a good story, esp here as Christmas is upon us!

Fanta46's photo
Fri 11/23/07 08:05 AM
I always loved this song!

Chestnuts roasting on an open fire,
Jack Frost nipping on your nose,
Yuletide carols being sung by a choir,
And folks dressed up like Eskimos.

Everybody knows a turkey and some mistletoe,
Help to make the season bright.
Tiny tots with their eyes all aglow,
Will find it hard to sleep tonight.

They know that Santa's on his way;
He's loaded lots of toys and goodies on his sleigh.
And every mother's child is going to spy,
To see if reindeer really know how to fly.

And so I'm offering this simple phrase,
To kids from one to ninety-two,
Although its been said many times, many ways,
A very Merry Christmas to you


no photo
Fri 11/23/07 02:46 PM
been growing them for years, they usually get a few feet high and then die. Its a valliant effort, but i dont know if its going to work.

scttrbrain's photo
Fri 11/23/07 04:27 PM
I love Chestnuts.
I had no idea this was happening. What a majestic tree that is. I wish I could see one.
I wonder if there is one on search?
It is a valiant effort being brought forth by this man. I wish him luck.
Kat
Thanks Fanta. Good timing.flowerforyou

Fanta46's photo
Fri 11/23/07 09:56 PM
A few years ago, they planted 2000 such trees on the Biltmore Estate here in Asheville!

I need to check and see how those are doing!
They had already bred them down to 15-1 (15/16 American, 1/16 Chinese) last I heard!