APP下载

几种不同品系暹罗斗鱼体色遗传规律的初步研究

2014-09-23张希杨宁姜芳燕黄海

热带农业科学 2014年8期
关键词:研究

张希+杨宁+姜芳燕+黄海

摘 要 利用人工繁殖的方法,进行暹罗斗鱼蓝色系、紫色蝶翼系内的杂交试验,分析品系内杂交组合的体色分离比例。结果表明,土耳其绿色、皇室蓝色和铁锈蓝色在F2中个体的分离比例为1∶2∶1,断定F1和F2代中的皇室蓝色均为杂合体,符合一对等位基因的孟德尔分离规律,土耳其绿色与铁锈蓝色之间为不完全显性关系。紫色蝶翼系斗鱼皮肤的红色和黄色,无论正交还是反交,F1全部为红色,F2中红色与黄色的个体分离比例为3∶1,符合孟德尔遗传规律,红色由显性基因控制,黄色由隐性基因控制。

关键词 暹罗斗鱼 ;体色 ;遗传 ;研究

分类号 S965

Inheritance of Body Colors of Siamese Fighting Fishes of Different Strains

ZHANG Xi1) YANG Ning1) JIANG Fangyan2) HUANG Hai1)

(1 Sanya Science & Technology Academy of Breeding and Multiplication,

Sanya, Hainan 572000, China;

2 School of Biological Science and Technology, Qiongzhou University, Sanya, Hainan 572022, China)

Abstract By artificial fertilization, some hybridization experiments were conducted within blue strains and purple butterfly strains to detect the body color separations of hybrids. The results indicated that all individuals were 1 Turquoise green: 2 royal blue: 1 steel blue color phenotypes in F2 progeny. Therefore, we inferred that royal blue color is heterozygous in the F1 and F2 progeny. This phenomenon does completely conform to Mendelian segregation rule of alleles, and the body color is incomplete dominance relations between Turquoise green and steel blue. The results revealed that all individuals of purple butterfly strains were red color phenotypes of skin color in F1 progeny, and were 3 red : 1 yellow color phenotypes in F2 progeny which were in agreement with the Mendelian mode. It was clear that the red color was controlled by the dominant gene, and the yellow color was controlled by the recessive gene.

Keywords Siamese fighting fish ; body color ; inheritance ; research

暹罗斗鱼因其色彩艳丽、体色绚烂而成为众多消费者青睐的观赏鱼品种。暹罗斗鱼雄鱼天性好斗,其作为娱乐工具已有上百年的历史[1]。人们捕捉野生斗鱼后,通过驯养繁殖和长期的逐步改良,使之不断呈现出更多能稳定遗传的体色,极大的丰富了暹罗斗鱼的色彩品系,成为独具魅力的观赏鱼品种[2-3]。观赏和把玩暹罗斗鱼大有风靡全球之势。通过定向选育,开发新的暹罗斗鱼品系是广大观赏鱼养殖户和爱好者的共同目标[4]。研究暹罗斗鱼颜色的遗传规律对于颜色品系的改良和选育意义重大。

目前,国内外对于鱼类体色的遗传学研究主要集中在鲤鱼、鲫鱼等鲤科鱼类。Katasonov等[4]认为,日本锦鲤的蓝色、桔红色和白色分别由1、2和3个隐性基因控制。Gomelsky等[5]认为,日本锦鲤的黑色斑纹是独立遗传的,而且它相对于红色、红-白和白色体色为显性。……

登录APP查看全文

猜你喜欢

研究
FMS与YBT相关性的实证研究
2020年国内翻译研究述评
辽代千人邑研究述论
视错觉在平面设计中的应用与研究
关于辽朝“一国两制”研究的回顾与思考
EMA伺服控制系统研究
基于声、光、磁、触摸多功能控制的研究
新版C-NCAP侧面碰撞假人损伤研究
关于反倾销会计研究的思考
焊接膜层脱落的攻关研究