Introgression in Japanese evergreen azaleas (Rhododendron kiusianum and R-kaempferi)

被引：0
|
作者：
Kobayashi, N [1 ]
Kawashima, S [1 ]
Handa, T [1 ]
Takayanagi, K [1 ]
Arisumi, K [1 ]
机构：
[1] Univ Tsukuba, Inst Agr & Forestry, Tsukuba, Ibaraki 305, Japan
来源：
THIRD INTERNATIONAL SYMPOSIUM ON NEW FLORICULTURAL CROPS - PROCEEDINGS | 1998年 / 454期
关键词：
chloroplast DNA; rDNA; PCR; RFLP;
D O I：
10.17660/ActaHortic.1998.454.37
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Natural hybridization of Japanese evergreen azaleas has often generated morphological variations, which have been used for the parents of azalea breeding. We investigated wild populations of evergreen azaleas in Kyushu composed of Rhododendron kiusianum, R. kaempferi and their interspecific hybrids. Morphological characters such as leaf size and flower color clearly distinguished two species. PCR-RFLP analysis of cpDNA could detect their specific bands in 16S rDNA region digested with HhaI restriction enzyme. However, 24% of individuals, which were morphologically indistinguishable from R. kiusianum, possessed the cpDNA of R. kaempferi. This suggests that past introgression into R. kiusianum might have occurred.
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页码：325 / 328
页数：4
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