灰枣成熟叶片DNA提取及ISSR反应体系构建

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针对枣DNA提取须用幼嫩叶片或组织培养幼苗这一限制相关实验顺利进行的问题.对常用的DNA提取方法CTAB法进行了改良,在破碎细胞之后,先加入2%β巯基乙醇,3%PVP,100mmol/LEDTA以去除成熟叶片细胞质中的多酚等次生物质,再加核裂解液CTAB以释放DNA。改良的CTAB法提取灰枣成熟叶片基因组DNA,分光光度法检测该法提取的样品DNA得率为55.1~79.1μg,g,D260nm/280nm为1.78~1.87;琼脂糖凝胶电泳检测的结果表明,该法提取的样品DNA分子量为23kb左右;该法提取的
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