Yield and dry matter productivity of Japanese and US soybean cultivars

Kawasaki, Yohei; Tanaka, Yu; Katsura, Keisuke; Purcell, Larry C.; Shiraiwa, Tatsuhiko

doi:10.1080/1343943x.2015.1133235

Cited by 25 publications

(22 citation statements)

References 45 publications

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“…1). The solar radiation from emergence to maturity totaled 1429 and 1623 MJ m −2 in 2014 and 2015, respectively (Table 4), which were 20 to 29% lower than the mean total solar radiation captured from emergence to the R7 stage by nine soybean cultivars studied in Arkansas, U.S.A. (Kawasaki et al, 2016). In terms of the cumulative intercepted photosynthetically active radiation (CIPAR) from emergence to the R6 stage, 605 MJ m −2 of CIPAR were required to reach 90% of asymptotic yield (Edwards et al, 2005), and CIPAR ranged from 382 to 400 MJ m −2 for new and old soybean cultivars at a planting density of 14.…”

Section: Discussionmentioning

confidence: 99%

“…Because these values are far from the value of 1.89 g MJ −1 , it would be useful to re-evaluate the RUE that can be achieved in Japan under an optimal growth environment using modern cultivars. Kawasaki et al (2016) demonstrated that Japanese soybean cultivars released from 1971 to 1986 had a lower yield potential than the American cultivars released from 1986 to 2007. This suggested that slow adoption of modern, high-yielding cultivars may be one of the reasons for the low soybean yield in Japan (Hajika, 2013).…”

Section: Introductionmentioning

confidence: 99%

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A high seed yield and associated attributes of dry matter production achieved by recent Japanese soybean cultivars

Maitree

Toyota

2017

Plant Production Science

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A high seed yield and associated attributes of dry matter production achieved by recent Japanese soybean cultivars

Maitree

Toyota

2017

Plant Production Science

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“…A recent yield comparison between Japanese and American cultivars by Matsuo et al 2016 showed that this cultivar had a higher pod number and seed yield than several Japanese cultivars in southwestern Japan. Kawasaki et al 2016 also reported that the American cultivars showed superior seed yield to Japanese cultivars due to their high biomass production capacity and high RUE during the seed-filling stage in a warmer region of Japan. In the present study, CGR and RUE were calculated during the 30 days after R1 in 2014 and from R2 to R5 in 2015, which is earlier than the stages studied by Kawasaki et al 2016 .…”

Section: Indeterminate Cultivars Did Not Always Surpass Determi-mentioning

confidence: 99%

“…Kawasaki et al 2016 also reported that the American cultivars showed superior seed yield to Japanese cultivars due to their high biomass production capacity and high RUE during the seed-filling stage in a warmer region of Japan. In the present study, CGR and RUE were calculated during the 30 days after R1 in 2014 and from R2 to R5 in 2015, which is earlier than the stages studied by Kawasaki et al 2016 . Therefore, further analysis of these parameters, with a focus on the whole growing season, but especially on the late seed-filling stage, will be needed to elucidate the factors responsible for superior seed yield.…”

Section: Indeterminate Cultivars Did Not Always Surpass Determi-mentioning

confidence: 99%

“…Generally, CGR, CumIR and RUE during reproductive stage are significantly positively correlated with soybean yield e.g., Kawasaki et al, 2016 . In the present study, CGR, CumIR and RUE were measured from the different stages in each year from late vegetative stage to around R5 in 2013, from R1 to 30 days after R1 in 2014, and from R2 to R5 in 2015, respectively .…”

Section: Early Sowing Ameliorated Seed Yield By Increasing C F mentioning

confidence: 99%

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Effect of early sowing on growth and yield of determinate and indeterminate soybean (<I>Glycine max</I> (L.) Merr.) cultivars in a cool region of northern Japan

Kumagai

2018

J. Agric. Meteorol.

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To increase Japanese soybean yield, both practical and genetic improvements are needed. Early sowing improved yields in the United States, where indeterminate cultivars may produce better yields than determinate cultivars, particularly with early sowing. However, the mechanism for the yield response is not fully understood. Furthermore, whether these results are valid for cool regions in northern Japan is unknown. This study tested the effects of early sowing on yield and its attributes in three years using a Japanese determinate cultivar Ryuhou and three indeterminate cultivars Karikei-881 and Karikei-879, recombinant inbred lines from determinate indeterminate crosses; UA4910, a high-yield American cultivar . The effects of early sowing varied among the years. Early sowing significantly increased pod number and seed yield by increasing cumulative intercepted solar radiation thus, growth during early reproductive stages in years with high precipitation during mid-season July and August . High precipitation potentially inhibited canopy development from vegetative to early reproductive stages more strongly in normally sown plants than in early sown plants. In contrast, no significant effect of early sowing was observed in a year with low precipitation during mid-season, when low precipitation during vegetative stage promoted canopy development in both sowing dates. Therefore, early sowing could escape from excess water stress and ameliorate canopy development and thereby seed yield in this region. There was no significant sowing date cultivar interaction for seed yield in any year; thus, the indeterminate cultivars did not benefit more from early sowing in northern Japan. UA4910 had greater seed yield than Ryuhou owing to its longer growth duration and greater aboveground biomass and pod number; Karikei-881, Karikei-879, and Ryuhou showed similar seed yields. Thus, indeterminate cultivars did not necessarily have higher yields in northern Japan. These results suggest that early sowing could be effective for increasing soybean yield in northern Japan.

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Temporal biological nitrogen fixation pattern in soybean inoculated with Bradyrhizobium

Arachchige

Rosso

Hansel

et al. 2020

Agrosystems Geosci & Env

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Biological nitrogen fixation (BNF) in soybean [Glycine max (L.) Merr.] plays an important role in sustainable agriculture, reducing the limitations associated with other sources of N such as fertilizers and soils. Our major objective was to evaluate the weekly pattern of BNF in soybean influenced by nodule formation, using three different laboratory‐cultured Bradyrhizobium strains. Plants were grown in 1‐m polyvinyl chloride (PVC) columns for 17 week in a greenhouse and BNF was determined using an integrated approach by assessing nodule formation, stem ureide‐N, and N partitioning in plant parts. Bradyrhizobium strains showed overall similar plant performance and N2−fixation capacity. During the beginning of flowering/full bloom (R1/R2) growth stages, nodule formation significantly increased and reached a maximum at pod‐filling (R4) stage. Stem ureide‐N was detected at early growth stages even with fewer small nodules, which significantly increased after the beginning of pod formation (R3). Peak N2−fixing rate (g N kg−1 d−1) started to decline after the onset of seed filling (R5.5). Relationship between BNF and nodule parameters (nodule number [R2 = .65] and nodule weight [R2 = .62]) suggested that they can be used as predictors of BNF.

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Yield and dry matter productivity of Japanese and US soybean cultivars

Cited by 25 publications

References 45 publications

A high seed yield and associated attributes of dry matter production achieved by recent Japanese soybean cultivars

A high seed yield and associated attributes of dry matter production achieved by recent Japanese soybean cultivars

Effect of early sowing on growth and yield of determinate and indeterminate soybean (<I>Glycine max</I> (L.) Merr.) cultivars in a cool region of northern Japan

Temporal biological nitrogen fixation pattern in soybean inoculated with Bradyrhizobium

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