Mapping of quantitative trait loci controlling adaptive traits in coastal Douglas-fir. I. Timing of vegetative bud flush |
| |
Authors: | K D Jermstad D L Bassoni K S Jech N C Wheeler D B Neale |
| |
Institution: | (1) Institute of Forest Genetics, Pacific Southwest Research Station, USDA, 2480 Carson Road, Placerville, CA 95667, USA e-mail: dneale@dendrome.ucdavis.edu Fax: +1-530-754-9366, US;(2) Department of Environmental Horticulture, University of California, Davis, CA 95616, USA, US;(3) Weyerhaeuser Forestry Research Center, 505 N Pearl Street, Centralia, WA 98531, USA, US |
| |
Abstract: | Thirty three unique quantitative trait loci (QTLs) affecting the timing of spring bud flush have been identified in an intraspecific
mapping population of coastal Douglas-fir Pseudotsuga menziesii (Mirb.) Franco var. menziesii]. Both terminal and lateral bud flush were measured over a 4-year period on clonal replicates at two test sites, allowing
for the repeated estimation of QTLs. QTLs were detected on 12 linkage groups and, in general, each explained a small proportion
of the total phenotypic variance and were additive in effect. Several QTLs influence the timing of bud flush over multiple
years, supporting earlier evidence that the timing of bud flush through developmental stages is under moderate to strong genetic
control by the same suite of genes through developmental stages. However, only a few QTLs controlling the timing of bud flush
were detected at both test sites, suggesting that geographic location plays a major role in the phenology of spring growth.
A small number of QTLs with year and site interactions were also estimated.
Received: 20 July 2000 / Accepted: 19 October 2000 |
| |
Keywords: | QTL mapping RFLP Bud phenology Genotype×environment interaction |
本文献已被 SpringerLink 等数据库收录! |
|