Dynamic Change of Peanut Embryo Development after Aspergillus flavus Infection and Population Structure of Related Genotypes
Yan Caixia
Zhang Hao
Li Chunjuan
Zhao Xiaobo
Wang Juan
Shan Shihua
Abstract：To clarify the cytological change of peanut seeds after Aspergillus flavus L.infection and the population structure of 48 resistance-related genotypes,A.flavus was inoculated into high-resistant peanut genotype J11 and susceptible peanut genotype Quanhua 10,and then the paraffin section of seeds were observed under a digital microscope.The results showed that the tissues of embryo cells of susceptible genotype were more seriously damaged than those of resistant genotype,and the cell disintegration and nutrient loss occurred earlier than the colonization of A.flavus in seed coat.Using the allele array of 46 SSR loci covering peanut genome and Bayes mathematical model,48 genotypes were divided into four conservative subpopulations named POP1,POP2,POP3 and POP4,which contained 8,13,9 and 15 accessions respectively,and the other 3 accessions belonged to mixed subpopulation.By UPGMA clustering method of NTSYS software and principal component analysis,all accessions were divided into four quadrants,which was basically in accordance with the composition of subpopulations.The two grouping results were both obviously correlated with the resistant characteristics of peanut genotypes.
Keywords：PeanutAspergillus flavusMicrostructurePopulation structurePCoA analysis
Publication Date：2017-03-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 1-9 )