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Fast chlorophyll fluorescence parameters are widely used to characterize the photosynthetic efficiency of plants. In this study,a genome-wide association analysis was used to detect key single-nucleotide polymorphisms( SNPs) associated with fast chlorophyll fluorescence parameters using more than 560 000 SNPs in a maize panel consisting of 404 inbred lines. In four field environments,41 SNPs were detected to be associated with five fast chlorophyll fluorescence parameters,including ABS / CS_o,ET_o/ CS_o,TR_o/ ABS,ET_o/ TRoand PIcs. Among these identified SNPs,8,6,18,4 and 5 were significantly associated with ET_o/ TR_o,ABS/CS_o,TRo/ ABS,ET_o/ CS_oand PIcs,respectively. These SNPs will help to discover genes for chlorophyll fluorescence parameters,better understand the genetic basis of photosynthesis,and assist in developing marker-assisted selection breeding programs in maize.
Fast this chlorophyll fluorescence parameters are widely used to characterize the photosynthetic efficiency of plants. In this study, a genome-wide association analysis was used to detect key single-nucleotide polymorphisms (SNPs) associated with fast chlorophyll fluorescence parameters using more than 560 000 SNPs in In these four fields environments, 41 SNPs were detected associated with five fast chlorophyll fluorescence parameters, including ABS / CS_o, ET_o / CS_o, TR_o / ABS, ET_o / TRoand PIcs. Among these identified SNPs , 8,6,18,4 and 5 were significantly associated with ET_o / TR_o, ABS / CS_o, TRo / ABS, ET_o / CS_oand PIcs, respectively. These SNPs will help to discover genes for chlorophyll fluorescence parameters, better understand the genetic basis of photosynthesis, and assist in developing marker-assisted selection breeding programs in maize.