Genetic Variation in Acquisition, and Utilization of Phosphorus from Iron-Bound Phosphorus in Pigeonpea

スポンサーリンク

概要

• 論文の詳細を見る

• In earlier experiments it was observed that pigeonpea is one of the few crop species that can utilize fixed forms of soil-P, particularly iron-bound P (Fe-P). The present investigation was aimed at assessing the genotypie variation in P uptake from Fe-P in pigeonpea. Fifteen pigeonpea germplasm lines that comprised genotypes of different maturity groups and three wild relatives were grown in vermiculite supplied with 15 mg P either as Fe-P or Ca-P for 60 d. Significant genetic variation in P uptake from Fe-P was observed; also P-use efficiency varied substantially among the genotypes. Dry matter production was positively correlated with P uptake both under Fe-P and Ca-P treatments (r=0.78; r=0.63; n=15). There was no significant relation between P-use efficiency and dry matter production. Wild related species did not show higher P uptake from Fe-P than the cultivated pigeonpea. From Fe-P, the P uptake was only 36% of that from Ca-P. The best genotypes in the present study took up an amount of P equivalent to 55% of that from Ca-P. Significant differences were detected in P-uptake efficiency (μg P mg^<-1> root d.wt.) among the genotypes, but P uptake efficiency did not correlate with total P uptake. A positive correlation was found between P uptake and root dry matter production under Ca-P and Fe-P treatments (r=0.70; r=0.58; n=15). The differential P uptake by ICPL 88039, C 11, ICPL 88032, and ICPL 87 from Fe-P in the vermiculite study was confirmed in soil culture where the soil contained a small amount of available P, but substantial amounts of Al-and Fe-P. The results demonstrated the presence of a significant genotypic variation in P uptake from Fe-P in pigeonpea.

著者

• Subbarao Guntur

  Agronomy Division Icrisat Patancheru

• Otani Takashi

  National Hospital Organization Ehime National Hospital

• Ae Noriharu

  National Institute For Agro-environmental Sciences

• Otani Takahashi

  National Institute of Agro-Environmental Sciences

関連論文

• PE-219 Visualization of the Left Ventricular Endocardial Surface by Virtual Cardioscopy Using ECG-gated Multi-slice Computed Tomography(CT/DSA-05, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
• The Status and Origin of Available Nitrogen in Soils
• Nitrogen Uptake Response of Vegetable Crops to Organic Materials
• Characteristics of Extractable Soil Organic Nitrogen Determined by Using Various Chemical Solutions and Its Significance for Nitrogen Uptake by Crops
• Growth Responses of Cereal Crops to Organic Nitrogen in the Field (Plant Nutrition)
• Nutrient Distribution around Roots of Brachiaria, Maize, Sorghum, and Upland Rice in an Andisol
• Extraction of Organic Phosphorus in Andosols by Various Methods
• Genetic Variation in Acquisition, and Utilization of Phosphorus from Iron-Bound Phosphorus in Pigeonpea
• The Status of Inorganic and Organic Phosphorus in Some Soils in Relation to Plant Availability
• Genotypic Variation in Iron-, and Aluminum-Phosphate Solubilizing Activity of Pigeonpea Root Exudates under P Deficient Conditions
• Phosphorus (P) Uptake Mechanisms of Crops Grown in Soils with Low P Status : II. Significance of Organic Acids in Root Exudates of Pigeonpea
• Nitrogen Uptake Response of Crops to Organic Nitrogen
• Phosphorus (P) Uptake Mechanisms of Crops Grown in Soils with Low P Status : I. Screening of Crops for Efficient P Uptake
• 日本産コメ,コムギ,ダイズおよびアズキ中のダイオキシン類濃度とその推定摂取量
• Influence of atmospheric exposure period on the concentrations of polychlorinated dibenzo-p-dioxins, dibenzofurans and coplanar polychlorinated biphenyls (dioxins) in forage

もっと見る 閉じる

スポンサーリンク