Characterization of Vegetative Growth of a Supernodulating Soybean Genotype, Sakukei 4

Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4

“…4, 6). In our previous studies, we indicated that the inferior capacity of leaf expansion per plant in Sakukei 4 restricted its dry-matter production, despite its superior photosynthetic ability (Maekawa et al, 2003;Matsunami et al, 2004). The low capacity of leaf expansion in Sakukei 4 was attributed to the small size of individual leaf in the present study.…”

Community shifts of soybean stem-associated bacteria responding to different nodulation phenotypes and N levels

“…The plants included cultivar Enrei (wild-type nodulating cultivar, Nod þ ), lines En 1314 and En 1282 (non-nodulating mutants derived from Enrei, Nod À ; Francisco and Akao, 1993) and lines En 6500 and Sakukei 4 (hypernodulating mutants derived from Enrei, Nod þ þ ; Akao and Kouchi, 1989;Matsunami et al, 2004). Mutations in En 1314 and En 1282 soybeans were found in the NFR1 gene, which is known to be responsible for a LysM-type receptor kinase for Nod factor recognition (Radutoiu et al, 2003 Masaki Hayashi (National Institute of Agrobiological Sciences, Tsukuba, Japan), personal communication).…”

“…Mutations in En 1314 and En 1282 soybeans were found in the NFR1 gene, which is known to be responsible for a LysM-type receptor kinase for Nod factor recognition (Radutoiu et al, 2003 Masaki Hayashi (National Institute of Agrobiological Sciences, Tsukuba, Japan), personal communication). A mutation in En 6500 was found in the GmNARK (NTS1) gene (Nishimura et al, 2002), which mediates systemic autoregulation of nodulation (Searle et al, 2003), and Sakukei 4 is a descendant with a hypernodulating phenotype that was derived from En 6500 (Matsunami et al, 2004).…”

Effect of Waterlogging During Vegetative Stage On Growth And Yield in Supernodulating Soybean Cultivar Sakukei 4

“…However, the growth performance of Sakukei 4 was inferior to that of its parental normally-nodulating Enrei cultivar (Maekawa et al, 2003). This inferior growth of Sakukei 4 before flowering is probably attributable to excessive drymatter partitioning to nodules, along with depressed capabilities of leaf expansion and root growth, which might limit dry-matter production of the whole plant during pre-flowering (Matsunami et al, 2004). In contrast to its inferior vegetative growth, Sakukei 4 exhibits superior growth during the reproductive growth stage (Takahashi et al, 2003a).…”