Intra-Raceme Variation in Pod-Set Probability Is Associated with Cytokinin Content in Soybeans
スポンサーリンク
概要
- 論文の詳細を見る
A large proportion of flowers abscise during development in soybean(Glycine max L.Merr.).A reduction in this abscission might increase pod and seed number, and thereby can lead to an increased yield.Previous studies showed that pod-set probability was greater at proximal positions of individual recemes, and that the probability was enhanced by the exogenously applied cytokinins.However, whether intra-raceme variation in the pod-set probability relates to endogenous cytokinin levels remains unknown.To address this question, intra-raceme variation in cytokinin content and pod-set probability was investigated.A soybean genotype IX93-100, which has long racemes, was grown in an environmentally controlled chamber(30/20゜C day/night temperature, 15 h day length, 600 μmol m~-2s~-1 photosynthetic photon flux density).Flowers, which were divided into three floral positions(proximal, middle, distal)on individual racemes, were sampled at intervals after anthesis.The cytokinins in the samples were identified by gas chromatography-mass spectrometry(GC-MS)and further quantified by enzyme immunoassay(EIA).The GC-MS analysis revealed that cis-zeatin riboside(c-ZR)and isopentenyl-adenosine(iPA)were predominant forms of cytokinin in soybean racemes.The total amount of these cytokinins in racemes, which was monitored by EIA, peaked one to two weeks after the first flowering on a raceme, when pod development was initiated.Within individual racemes, the total cytokinin concentrations were greater at more proximal floral positions, as was the probability of pod set.Removal of proximal flowers at anthesis enhanced both cytokinin concentrations and pod set at middle positions on the receme.Thus, pod-set probability was significantly associated with the cytokinin concentration at different floral positions within individual soybean racemes.
- 日本作物学会の論文
著者
-
Honda I
National Inst. Crop Sci. Tsukuba Jpn
-
Honda Ichiro
Department Of Agricultural Chemistry Faculty Of Agriculture Utsunomiya University
-
Kokubun Makie
Graduate School Of Agric. Sci. Tohoku Univ.
-
Honda Ichiro
National Institute Of Crop Science (nics)
-
Honda Ichiro
National Agriculture Research Center
関連論文
- An inverted and micro-colinear genomic regions of rice and barley carrying the cly1 gene for cleistogamy
- Spontaneous Brassinolide-insensitive Barley Mutants 'uzu' Adapted to East Asia
- Uzu Mutation in Barley (Hordeum vulgare L.) Reduces the Leaf Unrolling Response to Brassinolide(Organic Chemistry)
- Growth and Yield of New Rice for Africa (NERICAs) under Different Ecosystems and Nitrogen Levels
- Real-time Analysis of Photoassimilate Translocation in Intact Eggplant Fruit using ^CO_2 and a Positron-emitting Tracer Imaging System
- PIVKA-II-producing advanced gastric cancer
- Development of Rice Cultivation under a Water Storage-type Deep-irrigation Regime(Frontiers in Rice Science -from Gene to Field-,The 100^ Anniversary of Tohoku University, International Symposium)
- Inhibition of Prostaglandin Biosynthesis by 3-Nitro-2,4,6-trihydroxybenzamides
- Inhibition of Human 5-Lipoxygenase by 3-Nitro-2,4,6-trihydroxybenzamide Derivatives(Biological Chemistry)
- Structure-Activity Relationship of 3-Nitro-2,4,6-trihydroxybenzamide Derivatives in Photosynthetic Electron Transport Inhibition(Pesticide Chemistry)
- Syntheses of 3-Nitro-2,4,6-trihydroxy-benzamide and Thiobenzamide Derivatives as Highly Potent Inhibitors of Photosynthetic Electron Transport(Pesticide Chemistry)
- Gibberellin Biosynthesis in Bambusoideae
- Characterization of Endogenous Gibberellins in Dwarf Rice Mutants
- Effects of Ethylene and Gibberellins on the Elongation of Rice Seedlings (Oryza sativa L.)
- Photosystem II Inhibition by s-Triazines Having Hydrophilic Amino Groups
- Semi Quantification of Gibberellins in the Anthers of Thermosensitive Genetic Male Sterile Rice (Oryza sativa L. cv. PL12)
- Roles of Auxin and Cytokinin in Soybean Pod Setting(Crop Physiology and Ecology)
- The Role of Seed Structure and Oxygen Responsiveness in Pre-Germination Flooding Tolerance of Soybean Cultivars(Crop Physiology and Ecology)
- Effects of Foliar and Root-Applied Benzylaminopurine on Tillering of Rice Plants Grown in Hydroponics
- Effect of CO_2 Concentration, Temperature and N Fertilization on Biomass Production of Soybean Genotypes Differing in N Fixation Capacity
- Effect of Waterlogging during Vegetative Stage on Growth and Yield in Supernodulating Soybean Cultivar Sakukei 4(Agronomy)
- Characteristics of Growth and Yield Formation in the Improved Genotype of Supernodulating Soybean (Glycine max L. Merr.)
- Gibberellins from the Seed, Tassel, Cob and Silk of Maize(Biological Chemistry)
- Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4(Crop Physiology and Ecology)
- 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
- Effects of Source/Sink Ratio and Cytokinin Application on Pod Set in Soybean(Crop Physiology and Ecology)
- Effects of Waterlogging on Nitrogen Fixation and Photosynthesis in Supernodulating Soybean Cultivar Kanto 100(Crop Physiology & Ecology)
- Historical Changes in Grain Yield and Photosynthetic Rate of Rice Cultivars Released in the 20th Century in Tohoku Region(Crop Physiology and Ecology)
- Intra-Raceme Variation in Pod-Set Probability Is Associated with Cytokinin Content in Soybeans
- Relation of Seed Structures to Soybean Cultivar Difference in Pre-germination Flooding Tolerance(Crop Morphology)
- Cultivar differences in root development under water deficit condition and its association with water uptake capacity in rice
- Relation of Seed Structures to Soybean Cultivar Difference in Pre-germination Flooding Tolerance