McKeand, S.E. and Crook, R.P. and Allen, H.L. (1997) Genotypic stability effects on predicted family responses to silvicultural treatments in loblolly pine. Southern Journal of Applied Forestry, 21 (2). pp. 84-89.
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Abstract
The lack of rank change in growth characteristics when open-pollinated families of loblolly pine (Pinus taeda L.) are planted on different sites in the Southeast has greatly simplified breeding for superior genotypes. Although family rank does not usually change, genotype by environment interactions (GXE) may be very important in operational deployment of families in regeneration programs. Using data from GXE trials and two site preparation-fertilization-herbicide trials, we estimated the growth that different families should achieve following application of these silvicultural practices. Better performing families tend to be most responsive to site changes (i.e. genetically unstable). Growth responses to silvicultural treatment will be overestimated if only the most responsive families are used in silvicultural research trials. Similarly, genetic gains will be overestimated if gain trials are planted on only the best sites or receive intensive culture
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Pinus taeda; open pollination; genetic stability; genotype-environment interaction; site preparation; herbicides; fertilizers; Southeastern United States |
| Author Affiliation: | Department of Forestry, North Carolina State University, Raleigh, NC 2 7695-8002 |
| Subjects: | Crop Improvement |
| Divisions: | Other Crops |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 06 Oct 2014 08:56 |
| Last Modified: | 06 Oct 2014 08:56 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/13481 |
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