凉水、丰林国家自然保护区红松遗传多样性的ISSR分析

采用了ISSR分子标记技术对凉水和丰林地区的两个红松种群的74个个体进行了遗传多样性分析．13个随机引物共检测到103个可重复的位点，其中82个具有多态性。多态位点百分比分别为73．79％和71．84％．Shannon信息指数和Nei指数的统计结果都表明，红松的遗传多样性凉水种群大于丰林种群。红松种内的遗传变异主要存在于群体内，种群内存在一定的遗传分化．

Population genetic studies on nine head-facecharacters of Bouyei nationality

Nine genetics indexes,including mongoloid fold,eyefold of the upper eyelid,front tooth type,nasal profile,nostril form,chin projection,lobe type,hair point of the forehead and hair form were investigated for 320 middle school students(172 males and 148 females)in Bouyei nationality.The results showed as follows.(1)The Bouyei nationality had lower rate of mongoloid fold,higher rate of upper eyelid eyefold,middle and a little higher rate of shovel-shaped front tooth,middle rate of umbonate nasal profile,higher rate of wide nostril,middle and a little higher rate of protruding chin,slightly lower than middle rates of ear lobe,lower rate of pointed hair point on forehead and curly hair form;(2)Seven indexes showed no sexual difference except for mongoloid fold and lobe type;(3)These nine indexes showed extremly little correlations;(4)As a whole,compared with gene frequencies of seven indexes of other nationalities,the result indicated gene frequencies of mongoloid fold,eyefold of the upper eyelid,nostril form and hair point of the forehead had extremely significant difference between Bouyei and six other nationalities.