Dry bean: physiology of yield potential and stress tolerance

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cg.coverage.countryColombia
cg.coverage.iso3166-alpha2CO
cg.coverage.regionSouth America
cg.subject.ciatBEANS
cg.subject.ciatWATER
dc.contributor.authorWhite, Jeffrey W.
dc.contributor.authorIzquierdo, J.
dc.date.accessioned2016-02-29T17:09:42Zen
dc.date.available2016-02-29T17:09:42Zen
dc.identifier.urihttps://hdl.handle.net/10568/71266
dc.titleDry bean: physiology of yield potential and stress toleranceen
dcterms.abstractA descriptive and integrated look at the physiology of the bean plant is presented. Initially, the basic physiological processes that determine bean yields are discussed, namely (1) metabolic events such as photosynthesis, respiration, and N metabolism, which have a direct effect on growth, and (2) morphogenic events, such as germination, vegetative and reproductive growth, senescence and abscission, which affect the change in form or development of the plant. The integration of these processes through carbohydrate and N partitioning is reviewed as well as the source-sink model, information that is then applied to yield potential and stress tolerance. Specific physiological strategies for increasing yields considering both source (photosynthesis, respiration, light utilization) and sink capacities (flower, seed, and pod abortion, pod growth rates, HI) are reviewed. An ideotype for max. yield is proposed. The problems of earliness and seed size, and several nonconventional strategies are discussed; abiotic stresses that affect yield potential, such as drought and excess water, and rusticity in beans are also analyzed. Unpublished results obtained in research work in Latin America are included to illustrate physiological phenomena not considered in previous studies. Indications are that bean crop productivity can be improved only through 2 basic approaches: (1) modifying plant genotypes to fit the environment better and (2) changing the environment to ameliorate the effects of environmental stresses. The need for further research on the role of N remobilization in leaf senescence and seed growth is evidenced. (CIAT)en
dcterms.accessRightsOpen Access
dcterms.bibliographicCitationWHITE, J.W.; Izquierdo, J. 1989. Dry bean : Physiology of yield potential and stress tolerance. FAO Regional Office for Latin America and the Caribbean, Santiago, CL. 81 p.en
dcterms.extent81 p.
dcterms.issued1989
dcterms.languageen
dcterms.publisherFood and Agriculture Organization of the United Nations
dcterms.subjectphaseolus vulgarisen
dcterms.subjectphotosynthesisen
dcterms.subjectmetabolismen
dcterms.subjectgerminationen
dcterms.subjectgrowthen
dcterms.subjectsenescenceen
dcterms.subjectabscissionen
dcterms.subjectyieldsen
dcterms.subjectplant respirationen
dcterms.subjectyield componentsen
dcterms.subjectwater stressen
dcterms.subjectdroughten
dcterms.subjectresistanceen
dcterms.subjectsoilen
dcterms.subjectdevelopmental stagesen
dcterms.subjectphysiologyen
dcterms.subjectplant developmenten
dcterms.subjectplant physiological processen
dcterms.subjectplant physiologyen
dcterms.subjectfotosintesisen
dcterms.subjectmetabolismoen
dcterms.subjectgerminacionen
dcterms.subjectcrecimientoen
dcterms.subjectsenescenciaen
dcterms.subjectabcisionen
dcterms.subjectrendimientoen
dcterms.subjectrespiracion de la plantaen
dcterms.subjectcomponentes del rendimientoen
dcterms.subjectestres hidricoen
dcterms.subjectsequiaen
dcterms.subjectresistenciaen
dcterms.subjectsueloen
dcterms.typeReport

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