Cited by 20Seedling growth and survival studiesForest ecology and managementSeed Germination and Physiology

Survival and Growth of Chestnut Backcross Seeds and Seedlings on Surface Mines

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Skousen, J., Cook, T., Wilson-Kokes, L., Pena-Yewtukhiw, E.·2013·Journal of Environmental Quality

Abstract

Some scientists consider the loss of the American chestnut from forests in the eastern United States as one of the greatest forest ecological disasters in the 20th century. The American Chestnut Foundation has been attempting to restore chestnut by backcrossing blight-resistant Chinese chestnut to American chestnut and selecting those strains with blight resistance. Third-generation backcross seeds and seedlings have been produced and planted by researchers. Surface-mined lands provide a land base where these backcross chestnut seedlings may be introduced back into forests. In 2008, seeds of two parent species of chestnut (100% American and 100% Chinese) and three breeding generations (BF, BF, and BF backcrosses) were planted into loosely graded mine soils with and without tree shelters. First-year establishment from seeds averaged 81%. After the fourth year, survival without shelters declined for all chestnut stock types except for Chinese (80%): American 40%, BF 70%, BF 40%, and BF 55%. Survival with shelters was only slightly better after the fourth year (average, 60% with shelters and 57% without). Height growth was not different among stock types, and average height after the fourth year was 43 cm without shelters and 56 cm with shelters. In 2009, seeds and seedlings of the same chestnut stock types were planted into brown (pH 4.5) or gray (pH 6.6) mine soils. Only six out of 250 seeds germinated, which was very poor considering 81% average seed germination in 2008. Transplanted chestnut seedling survival was much better. After the third year, seedling survival was 85% in brown and 80% in gray soil, but significant differences were found with stock types. Survival was significantly higher with American, Chinese, and BF stock types (75%) than with BF and BF (60%). Height after the third season averaged 90 cm on brown and 62 cm on gray soil. Chestnut backcrosses displayed no hybrid vigor and were not better in survival and growth than the parent stock. All five stock types grew on mine soils in West Virginia, and we found surface mines to be promising sites for introducing blight-resistant chestnut backcross trees into the Appalachian forest.

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Crossref · 10.2134/jeq2012.0368

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Authors
Skousen, J., Cook, T., Wilson-Kokes, L., & Pena-Yewtukhiw, E.
Affiliations
  • West Virginia University (US)
  • Alpha Natural Resources, Inc.; One Alpha Place Bristol VA 24209
  • Plant and Soil Sciences; West Virginia Univ.; 1106 Agric. Sci. Bldg. Morgantown WV 26506-6108
Corresponding author
Skousen, J.
Venue
Journal of Environmental Quality
Publisher
Wiley
Published
2013-05
Volume
42
Issue
3
Pages
690-695
ISSN
0047-2425 (ISSN-L)
OpenAlex
W2165445249
Cited by
20
References
37
Citations by year
2022: 2 · 2020: 1 · 2019: 1 · 2018: 5 · 2017: 2 · 2016: 1 · 2015: 2 · 2014: 6
FWCI
2.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Environmental Quality (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Applied Science Program of the USDI
  • Office of Surface Mining Reclamation and Enforcement
  • Hatch Act for West Virginia University
Topics
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Seedling growth and survival studies
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Forest ecology and management
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Seed Germination and Physiology
Keywords
American chestnut, Castanea mollissima, chestnut blight resistance, surface mine reclamation, mine soils, seedling survival, seed germination, tree shelters, heterosis, forest restoration, Appalachian forests
MeSH terms
Mining, Seeds, Soil, Trees, Seedlings

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