Evaluation of the susceptibility to green stem disorder in soybeans [<i>Glycine max</i> (L.) Merr.] with vegetative storage protein accumulation

Green stem disorder (GSD) is an important agronomical problem in soybean production because it delays leaf and senescence complicates the harvest. However, a rapid precise diagnosis of GSD has not yet been established. In this study, effect depodding on vegetative storage protein (VSP) accumulation was investigated GSD-susceptible cultivar ‘Tachinagaha (Tc)’ GSD-resistant experimental line ‘Touhoku 129 (Th)’ under two different (early late) sowing dates 2020 2021. Intact Tc plants showed relatively severe at early late 2021, whereas intact Th little both years. Meanwhile, reproducibly induced increased weight for Th. The relative VSP content peaked 14–21 days after R3 (DAR3) afterward depodded plants. differed 28 DAR3 between plants, which earlier than timing when SPAD (soil plant analysis development) values differed, suggesting that might be better indicator value. present study will contribute to development tools diagnosing GSD.