Featured Research

from universities, journals, and other organizations

Going Back to the Source for a Heartier Apple Tree

Date:
January 5, 2006
Source:
USDA/Agricultural Research Service
Summary:
Grafts, genetic material and rootstocks collected during the 1990s from wild apple trees in central Asia may revolutionize the nation's apple industry. This material shows potential for helping breed trees that bear popular, domestic apples while standing up to destructive diseases and fungi, according to Agricultural Research Service (ARS) scientists.

Fruit representing 21 of 1,600 Malus sieversii trees growing in Geneva, New York. The trees, grown from germplasm collected in central Asia, contain a treasure trove of genes for improving disease resistance of American domestic apples.
Credit: Photo by Peggy Greb

Grafts, genetic material and rootstocks collected during the 1990s from wild apple trees in central Asia may revolutionize the nation's apple industry.

This material shows potential for helping breed trees that bear popular, domestic apples while standing up to destructive diseases and fungi, according to Agricultural Research Service (ARS) scientists. The genetic material was gathered during U.S. Department of Agriculture (USDA) sponsored excursions to Asia and Europe aimed at expanding the known genetic diversity of apples.

Horticulturist Phil Forsline and plant geneticist Gennaro Fazio of ARS' Plant Genetics Research Unit have used the material to raise orchards of the exotic apples near their laboratory in Geneva, N.Y. And, with colleagues in ARS and Cornell University, they've documented with astonishment the disease resistance of many of these trees and the domestic species they've bred with them.

Forsline went on seven of the collecting trips, including four to central Asia. The trips resulted in at least a doubling of the known genetic diversity of apple trees, according to Forsline. The scientists returned with 949 apple tree accessions from central Asia alone. Other excursions were to China, the Caucasus region including Russia and Turkey, and Germany.

Fazio and Forsline are most impressed with the material collected in Kazakhstan, especially accessions of Malus sieversii, an important forerunner of the domestic apple. This is logical, given that Kazakhstan is a likely ancestral origin of familiar domestic apples (Malus x domestica) such as Red Delicious, Golden Delicious and McIntosh.

According to Forsline, the Kazak trees showed significant resistance to apple scab—-the most important fungal disease of apples—as well as to fire blight. They were highly resistant against Phytophthora cactorum, which causes collar rot, and Rhizoctonia solani, an agent of apple replant disease, according to Fazio. Both researchers found genes in the Kazak apples that allow them to adapt to mountainous, near-desert, and cold and dry regions.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Going Back to the Source for a Heartier Apple Tree." ScienceDaily. ScienceDaily, 5 January 2006. <www.sciencedaily.com/releases/2006/01/060103190254.htm>.
USDA/Agricultural Research Service. (2006, January 5). Going Back to the Source for a Heartier Apple Tree. ScienceDaily. Retrieved August 2, 2014 from www.sciencedaily.com/releases/2006/01/060103190254.htm
USDA/Agricultural Research Service. "Going Back to the Source for a Heartier Apple Tree." ScienceDaily. www.sciencedaily.com/releases/2006/01/060103190254.htm (accessed August 2, 2014).

Share This




More Plants & Animals News

Saturday, August 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pyrenees Orphan Bear Cub Gets Brand New Home

Pyrenees Orphan Bear Cub Gets Brand New Home

AFP (Aug. 1, 2014) The discovery of a bear cub in the Pyrenees mountains made headlines in April 2014. Despire several attempts to find the animal's mother, the cub remained alone. Now, the Pyrenees Conservation Foundation has constructed an enclosure. Duration: 00:31 Video provided by AFP
Powered by NewsLook.com
Ebola Vaccine Might Be Coming, But Where's It Been?

Ebola Vaccine Might Be Coming, But Where's It Been?

Newsy (Aug. 1, 2014) Health officials are working to fast-track a vaccine — the West-African Ebola outbreak has killed more than 700. But why didn't we already have one? Video provided by Newsy
Powered by NewsLook.com
Study Links Certain Birth Control Pills To Breast Cancer

Study Links Certain Birth Control Pills To Breast Cancer

Newsy (Aug. 1, 2014) Previous studies have made the link between birth control and breast cancer, but the latest makes the link to high-estrogen oral contraceptives. Video provided by Newsy
Powered by NewsLook.com
Rare Whale Fossil Pulled from Calif. Backyard

Rare Whale Fossil Pulled from Calif. Backyard

AP (Aug. 1, 2014) A rare whale fossil has been pulled from a Southern California backyard. The 16- to 17-million-year-old baleen whale fossil is one of about 20 baleen whale fossils known to exist. (Aug. 1) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins