项目以我国西南地区主要朝天椒地方种质（117份）为试材，在前期研究基础上，进一步对这些种质的大田植物学特征、农艺性状等展开更为深入的研究，从表型层面评价这些种质的遗传背景差异。应用SSR分子标记技术探明这些朝天椒种质资源在基因组层面的DNA多态性差异，并优化、完善分子标记技术在朝天椒种质资源研究中的应用体系。结合朝天椒种质的表型差异、DNA多态性差异，综合评鉴西南主要朝天椒种质资源的遗传多样性，构建核心种质。. 通过项目的实施，可首次探明西南朝天椒核心种质的分子证据；将传统种质表型鉴定与现代分子生物学技术有机结合，探明西南主要朝天椒种质的分子亲缘关系，为以后的分子标记辅助育种打下前期基础。

Local germplasms of pod peppers of 117 originating in southwest region of China were collected in the research. Botany characteristics, agronomic traits, and other aspects of these germplasms planted in field will be further studied, based on the previous research results. The differences on genetic background are to be evaluated on phenotype level. SSR molecular marker techniques are going to be applied to ascertain that differences on DNA polymorphism on genome level. This application system to germplasm resource research of pod pepper will be perfected and optimized through adjusting PCR reaction systems. Genetic diversity in main germplasm resource of pod pepper in southwest region is to be comprehensively evaluated, combined the phenotype differences with the DNA polymorphism differences.. Through the implementation of this project research, the molecular evidences on the core collection of pod pepper in southwest region will be verified for the first time. The genetic relationship in main germplasm resource of pod pepper in southwest region will also be ascertained by combining traditional phenotypic evaluation with modern molecular biology techniques. The preliminary basis on molecular marker-assisted breeding in pod pepper will be established.