裙带菜幼孢子体营养细胞多倍体育种

Polyploid breeding on vegetative cell of young sporophyte in Undaria pinnatifida

本文报道了裙带菜幼孢子体的营养细胞2n配子体的产生过程及其发育特点、性分化、发育成熟时间,进行了2n配子体间及与正常配子体的杂交,培育出3n、4n幼孢子体。测定了不同倍性幼孢子体的生长。观察到3n幼孢子体的染色体数为90。

The formation process of 2n gametophyte induced from the vegetable cells of young sporophytes in Undaria pinnatifida was reported. The sex differentiation of 2n gametophyte and its characteristics and the required developing time were studied. The hybrid from 2n gametophyte and normal gametophyte was conducted, and 3n and 4n young sporophytes were produced. The chromosome number of 3n young sporophyte was 90.