Detection of quantitative trait loci for juvenile growth, flower bearing and rooting ability based on a linkage map of sugi (Cryptomeria japonica D. Don) |
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| Authors: | H Yoshimaru K Ohba K Tsurumi N Tomaru M Murai Y Mukai Y Suyama Y Tsumura T Kawahara Y Sakamaki |
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| Institution: | (1) Bio-resource Technology Division, Forestry and Forest Products Research Institute, Kukizaki ⋅ Ibaraki 305, Japan Fax: 81-298-73-3795 E-mail hyoshi@ffpri.affrc.go.jp, JP;(2) Institute of Agriculture and Forestry, University of Tsukuba, Tsukuba, Ibaraki 305, Japan, JP;(3) Forest Research Institute, Oji Paper Co, Kameyama, Mie 519-02, Japan, JP;(4) Faculty of Agriculture, Shizuoka University, Shizuoka, Shizuoka 422, Japan, JP;(5) Sugadaira Montane Research Center, University of Tsukuba, Sanada, Nagano 386-22, Japan, JP |
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| Abstract: | Quantitative traits, including juvenile growth, flower bearing and rooting ability, of a woody plant species, Cryptomeria japonica D. Don, were analyzed in a three-generation pedigree with 73 F2 progenies using a linkage map with 85 genetic markers (72 RFLP, 11 RAPD, one isozyme and one morphological loci). A cluster
of quantitative trait loci (QTLs) related to juvenile growth and female flower bearing was detected on linkage group 2. Some
of the influence of this cluster could be attributed to pleiotropic effects of a dwarf locus located in its vicinity. QTLs
related to male and female flower bearing were detected at different locations and showed different effects from each other,
suggesting that the genetic systems controlling male and female flowering are different. No large QTL affecting rooting ability
was detected in the material analyzed in this study.
Received: 15 December 1997 / Accepted: 4 February 1998 |
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| Keywords: | Linkage map QTL Juvenile growth Flower bearing Cryptomeria japonica D Don |
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