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Twenty-three accessions of Centrosema pubescens selected for good performance on an infertile, acid soil were tested along with 2 control lines each of C. pubescens and C. acutifolium at 18 locations in tropical America and one location in tropical China. The sites represent 3 major agroecosystem...


Keller-Grein, GerhardSchultze-Kraft, RainerFranco, LHRamírez, G.[Multilocational agronomic evaluation of selected Centrosema pubescens germplasm on acid soils]Multilocational agronomic evaluation of selected Centrosema pubescens germplasm on acid soils

Common bean (Phaseolus vulgaris L.) proved to be very sensitive of low pH (4.3), with large genotypic differences in proton sensitivity. Therefore, proton toxicity did not allow the screening of common bean genotypes for aluminium (Al) resistance using the established protocol for maize (0.5 mM C...


Rangel Becerra, AFMobin, MRao, Idupulapati M.Horst, Walter J.[Proton toxicity interferes with the screening of common bean (Phaseolus vulgaris L.) genotypes for aluminium resistance in nutrient solution]Proton toxicity interferes with the screening of common bean (Phaseolus vulgaris L.) genotypes for aluminium resistance in nutrient solution

Aluminum (Al) toxicity is a major limiting factor of crop production in acid soils, which are found mostly in developing countries of the tropics and sub-tropics. Common bean (Phaseolus vulgaris L.) is particularly sensitive to Al toxicity; and development of genotypes with better root growth in ...


López Marin, H.D.Rao, Idupulapati M.Blair, Matthew W.[Quantitative trait loci for root morphology traits under aluminum stress in common bean (Phaseolus vulgaris L.)]Quantitative trait loci for root morphology traits under aluminum stress in common bean (Phaseolus vulgaris L.)

Aluminium (Al) toxicity limits common bean productivity in acid soil regions of the tropics. To improve Al resistance of common bean, Al-sensitive Phaseolus vulgaris (SER16) was crossed to Al-resistant P. coccineus (G35346-3Q) to create 94 F5:6 recombinant inbred lines (RILs) of the pedigree SER1...


Butare, LouisRao, Idupulapati M.Lepoivre, PhilippeCajiao V., César HernandoPolanía Perdomo, José A.Cuasquer, Juan B.Beebe, Stephen E.[Phenotypic evaluation of interspecific recombinant inbred lines (RILs) of Phaseolus species for aluminium resistance and shoot and root growth response to aluminium–toxic acid soil]Phenotypic evaluation of interspecific recombinant inbred lines (RILs) of Phaseolus species for aluminium resistance and shoot and root growth response to aluminium–toxic acid soil

As Brachiaria hybrid cv. ‘Mulato’ has adapted to acid soils with extremely low phosphorus (P) contents, its low-P-tolerance mechanisms were investigated and compared with those of wheat (Triticum aestivum L.) and rice (Oryza sativa L. cv. ‘Kitaake’). Among the three plant species, the highest P-u...


Begum, Hasna HenaOsaki, MitsuruNanamori, MasahitoWatanabe, ToshihiroShinano, TakuroRao, Idupulapati M.[Role of phosphoenolpyruvate carboxylase in the adaptation of a tropical forage grass to low-phosphorus acid soils]Role of phosphoenolpyruvate carboxylase in the adaptation of a tropical forage grass to low-phosphorus acid soils

Many tropical forage grasses and legumes grow well in acid soils, adapting to excess aluminum (Al) and phosphorus (P) starvation stresses by using mechanisms that are still unclear. To determine these mechanisms, responses to Al toxicity and P starvation in three tropical forages were studied: tw...


Watanabe, ToshihiroOsaki, MitsuruYano, HiromiRao, Idupulapati M.[Internal mechanisms of plant adaptation to aluminum toxicity and phosphorus starvation in three tropical forages]Internal mechanisms of plant adaptation to aluminum toxicity and phosphorus starvation in three tropical forages
Phiri, SamuelAmézquita Collazos, EdgarRao, Idupulapati M.[Constructing an arable layer through chisel tillage and agropastoral systems in tropical savanna soils of the Llanos of Colombia]Constructing an arable layer through chisel tillage and agropastoral systems in tropical savanna soils of the Llanos of Colombia
Rao, Idupulapati M.Borrero, V.Ricaurte Oyola, José JaumerGarcía, RamiroAyarza, Miguel Angel[Adaptive attributes of tropical forage species to acid soils. II. Differences in shoot and root growth responses to varying phosphorus supply and soil type]Adaptive attributes of tropical forage species to acid soils. II. Differences in shoot and root growth responses to varying phosphorus supply and soil type
Wenzl, PeterChávez, Alba L.Rao, Idupulapati M.Mayer, Jorge EdgardNair, Muraleedharan G.[Roots of nutrient-deprived Brachiaria species accumulate 1,3-di-O-trans-feruloylquinic acid]Roots of nutrient-deprived Brachiaria species accumulate 1,3-di-O-trans-feruloylquinic acid

Low phosphorus (P) supply is a major limitation to pasture establishment and production in highly weathered acid soils. Previous research showed that the forage legume, Arachis pintoi, was more efficient in acquiring P from infertile acid soils than the forage grass, Brachiaria dictyoneura. The m...


Rao, Idupulapati M.Borrero, V.Ricaurte Oyola, José JaumerGarcía, Ramiro[Adaptive attributes of tropical forage species to acid soils. V. Differences in phosphorus acquisition from less available inorganic and organic sources of phosphate]Adaptive attributes of tropical forage species to acid soils. V. Differences in phosphorus acquisition from less available inorganic and organic sources of phosphate

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