Introgression of yellow flower colour in Buddleja davidii by means of polyploidisation and interspecific hybridisation

被引：4

作者：

Van Laere, K. ^{[1
]}

Van Huylenbroeck, J. ^{[1
]}

Van Bockstaele, E. ^{[1
]}

机构：

[1] Inst Agr & Fisheries Res ILVO, Plant Sci Unit, Caritasstr 21, B-9090 Melle, Belgium

来源：

HORTICULTURAL SCIENCE | 2011年 / 38卷 / 03期

关键词：

chromosome number; genome size; genomic in situ hybridisation (GISH); morphology; ornamental breeding; CHROMOSOMES; CULTURE; GENOMES; GROWTH; HYBRID;

D O I：

10.17221/61/2011-HORTSCI

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

VAN LAERE K., VAN HUYLENBROECK J., VAN BOCKSTAELE E., 2011. Introgression of yellow flower colour in Buddleja davidii by means of polyploidisation and interspecific hybridisation. Hort. Sci. (Prague), 38: 96-103. To introduce yellow colour in the commercial Buddleja davidii (2n = 4x = 76) assortment, an interspecific breeding programme with B. globosa (2n = 2x = 38) was started. The first step was to perform chromosome doubling in B. globosa. Two of the obtained tetraploid B. globosa plants were subsequently used as male parent in interspecific crosses with the white flowering B. davidii cv. Nanhoensis Alba. In total 182 interspecific crosses were made and 18 F1 hybrids were obtained. Genome size measurements, chromosome counts and genomic in situ hybridisation (GISH) analysis proved the hybrid nature of most of the F1 hybrids. Plant morphology also expressed hybrid characteristics. F1 seedlings inherited the yellowish flower colour from B. globosa. As for many other woody ornamentals, the creation of hybrids through interspecific hybridisation along with polyploidisation offers new opportunities for breeding in Buddleja.

引用

页码：96 / 103

页数：8