Pod number per plant
The pod number per plant of wild soybean and F1 hybrids was significantly higher than that of GM soybean in 2018. Wild soybean produced 565 pods per plant, while F1 hybrids produced 353 pods, and a significant difference was observed in the wild soybean and F1 hybrid groups (Table 3).
F2 homozygous resistant, heterozygous and homozygous susceptible plants produced 561, 545, and 686 pods per plant, respectively, and no significant differences were found between RR, RS and SS. Analysis of variance also showed that the pod numbers were not significantly different between wild soybean and F2hybrids (Table 3).
Pod numbers were compared between different genotypes of the F3 population, and no significant of the parameters differed among RR, RS, and SS. The pod number of the F3hybrids was also intermediate between that of wild and GM soybeans and was more similar to that of the wild soybean. In addition, both F3 hybrid and wild soybean pod numbers were much higher than those of GM soybeans.