15个引进树莓品种的核型  

Karyotypes of 15 Introduced Bramble Cultivars (Rubus)

作　　者：王小蓉[1] 汤浩茹[1] 付华清[1] 钟必凤[1] 夏武峰[1] 唐海东[1] 邓群仙 

机构地区：[1]四川农业大学林学园艺学院,雅安625014

出　　处：《林业科学》2008年第12期147-150,I0028,共5页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目(30671454);四川省教育厅项目(2004A025)

摘　　要：To provide and accumulate cytological data for bramble breeding in China, karyotypes of 8 Raspberry cultivars and 7 Blackberry cultivars introduced from foreign countries were investigated in the article. The results showed that all the 15 bramble cuitivars were of euploids and no aeuploids were found. All the 8 Raspberry cultivars were found to have 14 chromosomes, and the karyotype formulae of 2n=2x=14=14m, 2n=2x=14=14m (2SAT) and 2n=2x=14=14m (4SAT) were found respectively in 4 cultivars of ‘Algonquin’, ‘Reveille’, ‘Dinkum’ and ‘Ploana’, 3 cultivars of ‘Chilcotin’, ‘Nova’, and ‘Bristol’, and cultivar of ‘Chilliwack’. In the contrast, three various chromosome numbers of 28, 42 and 49 were found in the 7 Blackberry cultivars, their karyotypes formulae were as follows: 2n=4x=28=28m for ‘Arapaho’, ‘Shawnee’ and ‘Navaho’; 2n=6x=42=38m (6SAT) + 4sm for ‘Ollalie’; and 2n=7x=49=49m for ‘Black Butte’, ‘Boysen’ and ‘Kotata’. The karyotypes of all the bramble cultivars,except that of ‘Ollalie’,which was composed of metacentric chromosomes and submetacentric chromosomes and had a karyotype asymmetry type 2A, were composed of metacentric chromosome with type 1A asymmetry. Chromosome numbers of 9 bramble cultivars ‘Algonquin’, ‘Chilcotin’, ‘Reveille’, ‘Chilliwack’, ‘Nova’, ‘Ploana’, ‘Dinkum’, ‘Bristol’ and ‘Black Butte’ and karyotypes of 15 bramble cultivars were reported for the first time.To provide and accumulate cytological data for bramble breeding in China, karyotypes of 8 Raspberry cuhivars and 7 Blackberry cuhivars introduced from foreign countries were investigated in the article. The results showed that all the 15 bramble cuitivars were of euploids and no aeuploids were found. All the 8 Raspberry cultivars were found to have 14 chromosomes, and the karyotype formulae of 2n = 2x = 14 = 14m, 2n = 2x = 14 = 14m （2SAT） and 2n = 2x = 14 = 14m （4SAT） were found respectively in 4 cultivars of ＇Algonquin＇, ＇Reveille＇, ＇Dinkum＇ and ＇Ploana＇, 3 cultivars of ＇Chilcotin＇, ＇Nova＇, and ＇Bristol＇ , and cultivar of ＇Chilliwack＇ . In the contrast, three various chromosome numbers of 28, 42 and 49 were found in the 7 Blackberry cuhivars, their karyotypes formulae were as follows： 2n = 4x = 28 = 28m for ＇Arapaho＇, ＇Shawnee＇ and ＇Navaho＇ ; 2n = 6x = 42 = 38m （6SAT） ＋ 4sm for ＇ Ollalie＇ ; and 2n = 7x = 49 = 49m for ＇ Black Butte＇, ＇ Boysen＇ and ＇ Kotata＇. The karyotypes of all the bramble cultivars, except that of ＇ Ollalie＇, which was composed of metacentric chromosomes and submetacentric chromosomes and had a karyotype asymmetry type 2A, were composed of metacentric chromosome with type 1A asymmetry. Chromosome numbers of 9 bramble cultivars ＇ Algonquin＇, ＇ Chilcotin＇, ＇Reveille＇, ＇Chilliwack＇, ＇Nova＇, ＇Ploana＇, ＇Dinkum＇, ＇Bristol＇ and ＇Black Butte＇ and karyotypes of 15 bramble cultivars were reported for the first time.

关 键 词：树莓品种 染色体数目 倍性 核型 

分 类 号：S663.2[农业科学—果树学] Q949.718.2[农业科学—园艺学]