褐绿色型与野生色型坛紫菜杂交产生嵌合体及其选育

以野生型坛紫菜为父本，人工选育的褐绿色型坛紫菜为母本进行杂交实验，获得大量的单色体和嵌合体，在其子一代中随机抽取1147株藻体进行统计分析，并对生长性状好的藻体进行选育培养，结果显示：1）嵌合体色泽：主要为野生色＋褐绿色、野生色＋褐绿色＋野生色、褐绿色＋野生色＋褐绿色；2）嵌合体的比例：单一色型藻体占14．5％，2种色泽相嵌的嵌合体占73．9％，3种色泽的嵌合体占10．6％，4种色泽的嵌合体占1．1％；3）嵌合方式：点状、线型、“V”字型、“w”字型和小叶片型等；4）通过营养细胞酶解和单性生殖所获得的单色藻体c，经培养后F1和F2代遗传性状比较稳定，有望筛选成为新的品系．

Study on Chimeras and Breeding from Hybridization of the Breen-type and the Wild-type Porphyra haitanensis

The breen-type gained from artificial breeding and the wild-type Porphyra haitanensis were re- spectively used as female and male parent for hybridization, and lots of monochromatic thalli and chimeras were obtained. Further more, 1 147 strains of F1 seedlings were taken as examples and thalli with good growth trait were selected and cultured. The results indicated： 1 ） Colors of the chimera： wild and breen; wild, breen and wild; breen, wild and breen; 2） Percentage of chimeras： The chimeras with mono color accounted for 14. 5%, with two colors accounted for 73.9 %, those with three colors accounted for 10. 6 % and those with four colors I. 1% ; 3 ） Chimeric patterns： spot type, line type, ＂V＂ type, ＂W＂ type, blade type; 4） Monochromatic thalli c strain was obtained from enzymolysis and parthenogenesis, and its heritable traits, including F1 and F2, were fairly stable. Monochromatic thalli c strain had ordinary economic traits and would be selected to be a new Porphyra strain.