《Table 5 Genetic identity among the tested soybean germplasm population》

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《Effects of Seed Vitality and Regeneration on Genetic Integrity in Soybean by SSR Markers》

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It could be seen from Table 5 that population G1-1 had the highest genetic identity with the control population G0-1，which was 0.999 9，followed by population G2-1，which shared 0.999 8genetic identity with control population G0-1；and populations G0-4and G0-3 had the lowest genetic identity with the control population G0-1，which was 0.996 2 and 0.997 0，respectively.It could be seen from Fig.2 that although population G0-4 had the lowest genetic identity with the control population G0-1，its absolute value was still high，and it was also clustered at 0.996 5 with the control population G0-1，indicating that all the treatment populations had higher genetic identity with the control population，which is consistent with the analysis of difference in number of effective alleles per locus.Population G1-1 had the highest genetic identity with the control population G0-1，and the genetic distance was the closest，followed by population G2-1.This is because population G1-1 was reproduced from the control group G0-1，and population G2-1 was again reproduced from population G1-1，indicating that the genetic identity of the soybean germplasm material with a germination rate of 98.0%was well maintained after two times of reproduction.Population G0-2 with a germination rate decreased to 95.0%had higher genetic identity with population G0-1，while populations G0-3 and G0-4 with a germination rate decreased to 81.0%and 79.0%，respectively，had lower genetic identity with the control population G0-1，indicating that the decline in vitality has a greater impact on the genetic identity of soybean germplasms.There was a high genetic identity between population G1-2 and population G2-2，population G1-3 and population G2-3，and population G1-4 and population G2-4，because the latter was reproduced from the former.The genetic identify of these 6 populations with the control population G0-1 was higher than that of population G0-3 and population G0-4 with the control population G0-1，indicating that the decline in vitality has a higher effect on the genetic identity of soybean germplasm materials than reproduction generation.