Plant Nitrogen Levels and Photosynthesis in the Supernodulating Soybean (Glycine max L. Merr.) Cultivar 'Sakukei 4'(Crop Physiology and Ecology)
スポンサーリンク
概要
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Supernodulating soybeans, having several times more nodules than normal genotypes, are expected to produce higher dry matter and grain yields through a higher nitrogen fixation potential. However, their growth and yield have been inferior to those of normal genotypes. We have recently developed the supernodulating genotype 'Sakukei 4'(formerly 'En-b0-1-2', presently 'Kanto 100'), with improved growth and yield and a high nitrogen fixation potential. The objective of the present study was to examine the time course of changes in plant nitrogen content, leaf chlorophyll content (SPAD value), and photosynthetic rate of Sakukei 4 to reveal the source of its advantages in growth. The leaf nitrogen content after the flowering stage and the stem nitrogen content after the seed-filling stage were higher in Sakukei 4 than in the normal cultivar 'Enrei'. The SPAD values in Enrei and another normal cultivar, 'Tamahomare', decreased rapidly after the seed-filling stage, whereas that in Sakukei 4 stayed high until the late seed-filling stage. Differences in photosynthetic rate and leaf SPAD value between Sakukei 4 and Enrei were negligible at the beginning of podding but became very clear at the seed-filling stage because of the drop in the values for Enrei. In Sakukei 4, a large amount of nitrogen might not be translocated from leaf to seed during the seed-filling stage because of the higher capability of the nodules to send fixed nitrogen to the growing seeds. Sakukei 4 could thus maintain a high photosynthetic rate and grain growth during the seed-filling stage.
- 日本作物学会の論文
著者
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Takahashi Motoki
National Institute of Crop Science
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Nakayama Norikazu
National Institute Of Crop Science National Agriculture And Bio-oriented Research Organization
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Arihara Joji
National Institute of Crop Science, National Agriculture and Bio-oriented Research Organization
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Arihara Joji
National Institute Of Crop Science National Agriculture And Bio-oriented Research Organization
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Arihara Joji
National Institute Of Crop Science
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Takahashi Motoki
National Institute Of Crop Science National Agriculture And Bio-oriented Research Organization:(pres
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Takahashi Motoki
National Agricultural Research Center For Kyushu Okinawa Region
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NAKAYAMA Norikazu
National Institute of Crop Science
関連論文
- Expression and Sequence Analysis of Systemic Regulation Gene for Symbiosis, NTS1/GmNARK in Supernodulating Soybean Cultivar, Sakukei 4
- Effects of Cutting Height and Trampling over Stubbles of the First Crop on Dry Matter Yield in Twice Harvesting of Forage Rice(Agronomy)
- Response of Sesame (Sesamum indicum L.) to Low Oxygen Concentration during Germination
- Plant Nitrogen Levels and Photosynthesis in the Supernodulating Soybean (Glycine max L. Merr.) Cultivar 'Sakukei 4'(Crop Physiology and Ecology)
- Characteristics of Nodulation and Nitrogen Fixation in the Improved Supernodulating Soybean (Glycine max L. Merr.) Cultivar 'Sakukei 4'(Crop Physiology and Ecology)
- Characteristics of Growth and Yield Formation in the Improved Genotype of Supernodulating Soybean (Glycine max L. Merr.)
- Characterization of Nitrogen Assimilation in a Supernodulating Soybean Mutant En6500
- Nodulation during vegetative growth of soybean stage does not affect the susceptibility to red crown rot caused by Calonectria ilicicola
- Characterization of Vegetative Growth of a Supernodulating Soybean Genotype, Sakukei 4(Crop Physiology and Ecology)
- Responses of a Supernodulating Soybean Genotype, Sakukei 4 to Nitrogen Fertilizer
- Genetic analysis of antixenosis resistance to the common cutworm (Spodoptera litura Fabricius) and its relationship with pubescence characteristics in soybean (Glycine max (L.) Merr.)
- Evaluation of Metabolite Alteration under Flooding Stress in Soybeans
- Effects of Cutting Height and Trampling over Stubbles of the First Crop on Dry Matter Yield in Twice Harvesting of Forage Rice