Distributing and Genetic Diversity of High Oleic Acid Germplasm in Peanut(Arachia Hypogaea L.)Core Collection of China

Cultivated peanut(Arachis hypogaea L.)is a widely cultivated commercial plant in the world,which is also an important source of protein and edible oil.Identification of distributing and genetic diversity of high oleic acid germplasm in China peanut(Arachia Hypogaea)core collection is important to high oleic acid breeding.There were 40 accessions of germplasm that mean oleic acid content of two years is over 57%,which contains 6 accessions of ssp.fastigiata(var.vulgaris,6),33 accessions of ssp.hypogaea(var.hypogaea,25 and var.hirsute,8)and 1 intermediate.Except for 7 accessions coming from ICRISAT,1 accession coming from America,1 accession coming from Japan,and 1 accession coming from Korea,the other come from 12 provinces in China.We also discovered three accessions germplasm with high oleic acid and oil content,which are Zh.h4094(oleic acid=66.70%,oil content=54.99%),Zh.h4029(oleic acid=63.50%,oil content=55.58%)and Zh.h4319(oleic acid=59.70%,oil content=56.04%).Based on botanical and yield traits,the first five principal components(PCs)explained 81.17%variation,and based on dendrograms produced in NTSYS-pc 2.10e software,the varieties were classified into 8 groups in value being 0.1942.So,there was abundant genetic diversity of high oleic acid in Chinese peanut core collection.Varieties of high oleic acid Acquired was one strategy to improve oil quality of peanut and to develop high oleic fatty acid using plant breeding techniques.