000			04529aam a22004457 4500
999			_c138386 _d138386
003			CR-TuBCO
005			20221110064426.0
007			ta
008			170120b2017 xxu||||| p||| 00| 0 eng d
040			_aCR-TuBCO _bspa _cCR-TuBCO
041			_aeng
090			_aThesis _bL438
100	1		_985562 _aLeandro Muñoz, Mariela E.
245	1	0	_aBiology and epidemiology of Moniliophthora roreri, causal agent of moniliophthora pod rot of cacao _c / por Mariela Eugenia Leandro Muñoz
260			_aTurrialba, Costa Rica _bCATIE _c2017
264			_aTurrialba, Costa Rica _bCATIE _c2017
270			_aSan José, C.R.
300			_a149 páginas _bilustraciones, tablas
502			_aTesis (Ph. D.) - CATIE, 2017
504			_aIncluye bibliografía
520			_aMoniliophthora pod rot (MPR) is one of the main factors limiting cocoa production in Latin America. Currently insufficient information on the biology and epidemiology of the pathogen limits the development of efficient management options to control MPR. The purpose of this study was to identify meteorological and production variables as epidemiological predictors of the MPR disease and, coupled with the existing evidence on the MPR-cacao pathosystem, to develop a conceptual model. Information obtained is strategic for better understanding of the pathosystem, to guide researchers to define new studies and to improve control methods. The research began with a historical data analysis to determine the influence of the meteorological, productive and genetic resistance variables on the disease over time. This analysis revealed that the resistance of the highly resistant clones is considerably stable and possibly durable; however, for the rest of the clones, disease reaction was shown to be significantly influenced by the environment. Also, temperatures during January, April and May are the only climatic variables that have a significant effect over MPR incidence. A field trial was then carried out to explain MPR development, onset of symptoms of the disease and fungal sporulation, studying different microclimatic variables for three cacao clones in a range of incomplete resistance. We concluded that water-related variables (positively linked) and temperature (minimum temperature negatively linked while maximum temperature presented a threshold) determine symptom expression for the susceptible clones, while, for the resistant clone CATIE-R4, only temperature (minimum temperature negatively linked and maximum temperature positively linked) showed up as an explicative variable, due to low numbers of CATIE-R4 pods showing symptoms. Differences in resistance among these clones possibly lie in the number of resistant genes accumulated; however, the resistance of the three may be affected by certain environmental conditions. To separate the microclimatic effects on the infection and the symptoms onset, we studied the relationship between the MPR infection process and the onset of symptoms of three different cacao clones through artificial inoculations. We determined that symptoms/signs onset is close enough to the infection moment that the influence of the microclimate over onset of the symptoms could be extrapolated to the time of infection. La moniliasis del cacao es uno de los principales factores que limitan la producción de cacao en América Latina. Actualmente, la insuficiente información sobre la biología y la epidemiología del patógeno limita el desarrollo de mecanismos eficientes para el control de la enfermedad. El propósito de este estudio fue identificar las variables meteorológicas y de producción que actúan como predictores epidemiológicos de la enfermedad y, junto con la evidencia existente sobre el sistema patológico moniliasis-cacao.
650			_9137933 _aBIOLOGIA
650			_9146178 _aEPIDEMIOLOGIA
650			_9155215 _aMONILIOPHTHORA RORERI
650			_9138724 _aCACAO
650			_9134743 _aAGRICULTURA
650			_9141816 _aCONSERVACION DE LA DIVERSIDAD BIOLOGICA
650			_9147584 _aFACTORES DE PRODUCCION
650			_9140351 _aCHOCOLATE
650			_9151148 _aINDUSTRIA
650			_9158986 _aPLANTACION
650			_9164420 _aSERVICIOS DE LOS ECOSISTEMAS
651			_9167579 _aTURRIALBA
651		0	_aCOSTA RICA _92064
710			_aCATIE - Centro Agronómico Tropical de Investigación y Enseñanza _cTurrialba, Costa Rica _eautor _93977
856			_qpdf _uhttp://hdl.handle.net/11554/8703 _yspa
914			_aIICA-SC
942			_cTES _2z