对36个水稻骨干系进行了RFLP（限制性内切酶长度多态性）分析，并对这些水稻材料的162个杂交组合育性进行了分组分类研究。
RFLP analysis was carried out on 36 rice elite line. Sterility of these 162 rice hybrids was studied in groups and in types.
方法：采用PCR技术和限制性内切酶片段长度多态性（RFLP）的方法，检测中国北方汉族168个核心家系的基因型。
Methods A PCR-based RFLP procedure was employed to detect the genotypes of 168 family trios of Han descent population in the North of China.
方法：运用多聚酶链反应-限制性内切酶片段长度多态性技术(PCR - RFLP)检测MTHFR的677位点多态性。
Methods: PCR-RFLP technique was used for detecting the A677V polymorphism site of MTHFR gene.
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