Landscape management and domestication of Stenocereus pruinosus (Cactaceae) in the Tehuacán Valley: human guided selection and gene flow

Journal of Ethnobiology and Ethnomedicine

Alejandro Casas¹  José Juan Blancas¹  Fabiola Parra¹ 

[1] Centro de Investigaciones en Ecosistemas (CIECO), Universidad Nacional Autónoma de México (campus Morelia), Antigua Carretera a Pátzcuaro 8711 Col. Ex Hacienda de San José de la Huerta, Morelia, Michoacán, 58190, Mexico

关键词: Stenocereus pruinosus;    Morphological variation;    Landscape management;    Genetic resources conservation;    Domestication;    Columnar cacti;    Artificial selection;   

Others  :  862780
DOI  :  10.1186/1746-4269-8-32

 received in 2012-03-17, accepted in 2012-06-09,  发布年份 2012

【 摘 要 】

Background

Use of plant resources and ecosystems practiced by indigenous peoples of Mesoamerica commonly involves domestication of plant populations and landscapes. Our study analyzed interactions of coexisting wild and managed populations of the pitaya Stenocereus pruinosus, a columnar cactus used for its edible fruit occurring in natural forests, silviculturally managed in milpa agroforestry systems, and agriculturally managed in homegardens of the Tehuacán Valley, Mexico. We aimed at analyzing criteria of artificial selection and their consequences on phenotypic diversity and differentiation, as well as documenting management of propagules at landscape level and their possible contribution to gene flow among populations.

Methods

Semi-structured interviews were conducted to 83 households of the region to document perception of variation, criteria of artificial selection, and patterns of moving propagules among wild and managed populations. Morphological variation of trees from nine wild, silviculturally and agriculturally managed populations was analyzed for 37 characters through univariate and multivariate statistical methods. In addition, indexes of morphological diversity (MD) per population and phenotypic differentiation (PD) among populations were calculated using character states and frequencies.

Results

People recognized 15 pitaya varieties based on their pulp color, fruit size, form, flavor, and thorniness. On average, in wild populations we recorded one variety per population, in silviculturally managed populations 1.58 ± 0.77 varieties per parcel, and in agriculturally managed populations 2.19 ± 1.12 varieties per homegarden. Farmers select in favor of sweet flavor (71% of households interviewed) and pulp color (46%) mainly red, orange and yellow. Artificial selection is practiced in homegardens and 65% of people interviewed also do it in agroforestry systems. People obtain fruit and branches from different population types and move propagules from one another. Multivariate analyses showed morphological differentiation of wild and agriculturally managed populations, mainly due to differences in reproductive characters; however, the phenotypic differentiation indexes were relatively low among all populations studied. Morphological diversity of S. pruinosus (average MD = 0.600) is higher than in other columnar cacti species previously analyzed.

Conclusions

Artificial selection in favor of high quality fruit promotes morphological variation and divergence because of the continual replacement of plant material propagated and introduction of propagules from other villages and regions. This process is counteracted by high gene flow influenced by natural factors (pollinators and seed dispersers) but also by human management (movement of propagules among populations), all of which determines relatively low phenotypic differentiation among populations. Conservation of genetic resources of S. pruinosus should be based on the traditional forms of germplasm management by local people.

【 授权许可】

   
2012 Parra et al.; licensee BioMed Central Ltd.

【 图 表 】

【 参考文献 】

• [1]VM Barrera-Bassol N, García-Frapolli E, Alarcon-Chaires P: Uso múltiple y biodiversidad entre los Mayas Yucatecos (México). Interciencia 2008, 345(5):345-352.
• [2]Altieri MA, Merrick LC: In situ conservation of Crop genetic resources through maintenance of traditional farming systems. Econ Bot 1987, 41:86-96.
• [3]Blancas J, Casas A, Rangel-Landa S, Moreno-Calles A, Torres I, Pérez-Negrón E, Solís L, Delgado-Lemus A, Parra F, Arellanes Y, Caballero J, Cortés L, Lira R: Plant Management in the Tehuacán-Cuicatlán Valley, Mexico. Econ Bot 2010, 64(4):287-302.
• [4]Moreno-Calles A, Casas A, García-Frapolli E, Torres I: Traditional agroforestry systems in the arid Tehuacán Valley: their management and role in people’s livelihoods. Agric Sys 2010, 80:315-331.
• [5]Kumar BM, Nair P: The enigma of tropical homegardens. Agroforest Syst 2004, 61:135-152.
• [6]Montagnini F: Tropical Homegardens: A Time-Tested Example of Sustainable Agroforestry. In Homegardens of Mesoamerica: biodiversity, food security, and nutrient management. Edited by Kumar BM, Nair PKR. The Netherlands: Springer; 2006:61-84.
• [7]Perfecto I, Vandermeer J: Biodiversity conservation in tropical agroecosystems: new conservation paradigm. Ann NY Acad Sci 2008, 1134:173-200.
• [8]Eyzaguirre P, Watson J: Home gardens and in situ consevation of plant genetic resources in farming systems. Proceedings of the Second International Home Gardens Workshop. In Home gardens and agrobiodiversity: an overview across regions. Edited by Watson JW, Eyzaguirre PB. Rome: Federal Republic of Germany: International Plant Genetic Resources Institute; 2001. 17–19 July 2001 Witzanhausen
• [9]Perrault-Archambault M, Coomes O: Distribution of Agrobiodiversity in Home Gardens along the Corrientes River, Peruvian Amazon. Econ Bot 2008, 62(2):109-126.
• [10]Wezel A, Bender S: Plant species diversity of homegardens of Cuba and its significance for household food supply. Agroforest Syst 2003, 57:39-49.
• [11]Blanckaert RL, Swennen M, Paredes Flores R, Rosas Lopez R, Lira Saade R: Floristic composition, plant uses and management practices in homegardens of San Rafael Coxcatlán,Valley of Tehuacán-Cuicatlán, México. J Arid Environ 2004, 57:39-62.
• [12]Albuquerque UP, Andrade LHC, Caballero J: Structure and floristics of homegardens in Northeastern Brazil. J Arid Environ 2005, 62:491-506.
• [13]Darwin C: The origins of species by means in natural selection or the preservation of favoured races in the struggle for life. London: John Murray; 1859.
• [14]Alcorn JB: El te‘lom huasteco: presente, pasado y futuro de un sistema de silvicultura indígena. Biótica 1983, 8:315-331.
• [15]Gepts P: The use of molecular and biochemical markers in crop evolution studies. Evol Biol 1993, 27:51-94.
• [16]Parra F, Casas A, Peñaloza-Ramírez JM, Cortés-Palomec A, Rocha-Ramírez V, González-Rodríguez A: Process of domestication of Stenocereus pruinosus (Cactaceae) in the Tehuacán Valley, Central Mexico. Ann Botany 2010, 106:483-496.
• [17]Casas A, Pickersgill B, Caballero J, Valiente-Banuet A: Ethnobotany and domestication in xoconochtli, Stenocereus stellatus (Cactaceae), in the Tehuacán Valley and la Mixteca Baja, México. Econ Bot 1997, 51:279-292.
• [18]Casas AA, Otero-Arnaiz E, Casas A, Otero-Arnaiz A, Peréz-Negrón E, y Valiente-Banuet A: In situ Management and Domestication of Plants in Mesoamerica. Ann Botany 2007, 100:1101-1115.
• [19]Colunga-GarcíaMarín P, Hernández-Xolocotzi E, Castillo-Morales A: Variación morfológica, manejo agrícola y grados de domesticación de Opuntia spp. en el Bajío Guanajuatense. Agrociencia 1986, 65:7-49.
• [20]Denevan WM: The pristine Myth: The landscape of the Americas in 1492. Ann Assoc Am Geogr 1992, 82(3):369-385.
• [21]Erickson CL: Handbook of the South American Archaeology. In Amazonia: The Historical Ecology of a domesticated landscape. Edited by Silverman H, Isbell WH. New york: Springer; 2008:157-183.
• [22]Vargas-Ponce O, Zizumbo-Villarreal D, Martínez-Castillo J, Coello-Coello J, Colunga-GarcíaMarín P: Diversity and structure of landraces of agave grown for spirits under traditional agriculture: a comparison with wild populations of A angustifolia (agavaceae) and commercial plantations of A. tequilana. Am J Bot 2009, 96(2):448-457.
• [23]Ekué MRM, Sinsin B, Eyog-Matig O, Finkeldey R: Uses, traditional management, perception of variation and preferences in ackee (Blighia sapida K.D. Koenig) fruit traits in Benin: implications for domestication and conservation. J Ethnobiol Ethnomed 2010, 6:2-14. BioMed Central Full Text
• [24]Machado de Freitas E, Peroni N, de Albuquerque U: Traditional knowledge and Management of umbu (Spondias tuberosa, Anacardiaceae): An endemic species from the semi-arid region of Northeastern Brazil. Econ Bot 2010, 64(1):11-21.
• [25]Machado-De Freitas E, Peroni N, Maranhao CMC, Maciel MIS, De Albuquerque UP: Analysis of umbu (Spondias tuberosa Arruda (Anacardiaceae)) in different landscape management regimes. A process of incipient domestication? Environ Monit Assess 2012, 184(7):4489-4499.
• [26]Vodouhè R, Dansi A, Avohou HT, Kpèki B, Azihou F: Plant domestication and its contributions to in situ conservation of genetic resources in Benin. Int J Biodivers Conser 2011, 3(2):40-56.
• [27]Oudenhoven F, Mijatovic D, Eyzaguirre P: Social-ecological indicators of resilience in agrarian and natural landscapes. Manag Environ Qual: An Int J 2011, 22(2):154-173.
• [28]Casas A, Parra F: Agrobiodiversidad, parientes silvestres y cultura. LEISA Revista de Agroecología 2007, 23(2):5-8.
• [29]Heywood V, Casas A, Ford-Lloyd B, Kell S, Maxted N: Conservation and sustainable use of crop wild relatives. Agricutl Ecosys Environ 2007, 121:245-255.
• [30]Brush SB: Farmers’ Bounty: Locating Crop Diversity in the Contemporary World. New Haven, CT, USA: Yale University Press; 2004.
• [31]Coomes O, Ban N: Cultivated plant species diversity in home gardens of an amazonian peasant village in Northeastern Perú. Econ Bot 2004, 58(3):420-434.
• [32]Casas A, Cruse J, Morales E, Otero-Arnaiz A, Valiente-Banuet A: Maintenance of phenotypic and genotypic diversity of Stenocereus stellatus (Cactaceae) by indigenous peoples in Central Mexico. Biodivers Conserv 2006, 15:879-898.
• [33]Boege E: El patrimonio biocultural de los pueblos indígenas de México: Hacia la conservación in situ dela biodiversidad y agrobiodiversidad de los territorios indígenas. México: INAH; 2008.
• [34]Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. México: La diversidad biológica de México: Estudio de País; 1998.
• [35]Toledo VM: lndigenous peoples and biodiversity. Encyclopedia of Biodiversity 2001, 3:451-463.
• [36]De Avila A: Capital natural de México. Volume 1: Conocimiento actual de la biodiversidad. In La diversidad lingüística y el conocimiento etnobiológico. México: Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO); 2008:497-556.
• [37]Vavilov NI: The origin, variation, immunity and breeding of cultivated plants. Chron Bot 1951, 13:1-366.
• [38]Harlan J: Crops and man. Madison. Wisconsin: Foundation for modern crop science series. American Society of Agronomy and Crop Society of America; 1975.
• [39]Pickersgill B: Domestication of plants in the Americas: Insights from mendelian and molecular genetics. Ann Botany 2007, 100:925-940.
• [40]Caballero J, Casas A, Cortés L, Mapes C: Patrones en el conocimiento, uso y manejo de plantas en pueblos indígenas de México. Revista de Estudios Atacameños 1998, 16:181-196.
• [41]Moreno-Calles A, Casas A, García-Frapolli E, Torres-García I: Traditional agroforestry systems of multi-crop “milpa” and “chichipera” cactus forest in the arid Tehuacán Valley, Mexico: their management and role in people’s subsistence. Agroforest Syst 2012, 84(2):207-226.
• [42]Parra F, Pérez-Nasser N, Lira R, Pérez-Salicrup D, Casas A: Population genetics and process of domestication of Stenocereus pruinosus (Cactaceae) in the Tehuacán Valley, México. J Arid Environ 2008, 72:1997-2010.
• [43]Casas A, Caballero J, Valiente-Banuet A, Soriano JA, Dávila P: Morphological variation and the process of domestication of Stenocereus stellatus (Cactaceae) in Central Mexico. Am Jour Bot 1999, 86:522-533.
• [44]Sneath PHA, Sokal RR: Numerical Taxonomy. The Principles and Practice of Numerical Classification. San Francisco, California: Freeman; 1973.
• [45]Rohlf J: Numerical Taxonomy and Multivariate Analysis System for the PC Microcomputer (and Compatibles). Version 2.6. Applied Biostatistics, Inc. New York: Stony Brook; 1993.
• [46]Blancas J, Casas A, Lira R, Caballero J: Traditional management and morphological patterns of Myrtillocactus schenckii in the de Tehuacán Valley, Central México. Econ Bot 2009, 63:375-387.
• [47]Blancas JJ, Parra F, Lucio JD, Ruíz-Durán ME, Pérez-Negrón E, Otero-Arnaiz A, Pérez-Nasser N, Casas A: Manejo tradicional y conservación de la diversidad morfológica y genética de Polaskia spp. (Cactaceae) en México. Zonas Áridas 2006, 10:20-40.
• [48]Nei M: Genetic Distance between Populations. Am Nat 1972, 106:283-292.
• [49]Cruz M, Casas A: Reproductive biology and morphological variation of Polaskia chende (Cactaceae) under domestication in Central Mexico. J Arid Environ 2002, 51:561-576.
• [50]Arellano E, Casas A: Morphological variation and domestication of Escontria chiotilla (Cactaceae) under silvicultural management in the Tehuacán Valley, Central Mexico. Genet Resour Crop Evol 2003, 50:439-453.
• [51]Luna-Morales C, Aguirre R, Peña C: Cultivares tradicionales mixtecos de Stenocereus pruinosus y S.stellatus (Cactaceae). A Inst Biol Méx 2001, 72:131-155.
• [52]Luna-Morales C, Aguirre JR: Variación morfológica del fruto y domesticación de Stenocereus pruinosus (Otto) Buxb. y S. stellatus (Pfeiff.) Riccob. (Cactaceae) en la Mixteca Baja, México. Rev Fitotec Mex 2001, 24:213-221.
• [53]Guillen S, Terrazas T, De la Barrera E, Casas A: Germination differentiation patterns of wild and domesticated columnar cacti in a gradient of artificial selection intensity. Genet Resour Crop Evol 2011, 58:409-423.
• [54]Rodríguez-Arévalo I, Casas A, Lira R, Campos J: Uso, manejo y procesos de domesticación de Pachycereus hollianus (F.A.C. Weber) Buxb. (Cactaceae), en el Valle de Tehuacán-Cuicatlán, México. Interciencia 2006, 31(9):677-685.
• [55]Miller R, Penn J, Van Leeuwen J: Amazonian homegardens: their ethnohistory and potential contribution to agroforestry development. In Tropical Homegardens: A Time-Tested Example of Sustainable Agroforestry Edited by Kumar BM and Nair PKR. Springer. The Netherlands; 2006:43-60.
• [56]Torres I: Aspectos etnobotánicos y ecológicos de los recursos vegetales en la comunidad de Sn Luis Atolotitlán, Municipio de Caltepec, Puebla, México, B.Sc. Thesis. , Morelia, Michoacán. México: Facultad de Biología. Universidad Michoacana San Nicolás Hidalgo; 2001.
• [57]Casas A, Rangel-Landa S, Torres I, Pérez-Negrón E, Solís L, Parra F, Delgado A, Blancas JJ, Farfán B, Moreno-Calles A: Current Topics in Ethnobotany. In situ Management and Conservation of Plant Resources in the Tehuacán-Cuicatlán Valley, Mexico: An Ethnobotanical and Ecological Perspective. Edited by Albuquerque UP, Alves-Ramos M. Kerala, India: Research Signpost; 2008:1-25.
• [58]Anderson A: Alternatives to deforestation. Steps toward sustainable use of the Amazon Rain Forest. In Extraction and Forest Management by Rural inhabitans in the Amazonian Estuary. Edited by Anderson A. New York, USA: Columbia University Press; 1990:65-85.
• [59]Toledo VM, Ortiz-Espejel B, Cortés L, Moguel P, Ordoñez MJ: The multiple use of tropical forests by indigenous peoples in Mexico: a case of adaptive management. Conserv Ecol 2003, 7:9.
• [60]Casas A, Valiente-Banuet A, Rojas-Martínez A, Dávila P: Reproductive biology and the process of domestication of the columnar cactus Stenocereus stellatus in Central Mexico. Am Jour Bot 1999, 86:534-542.
• [61]Cortés-Díaz V: Biología de la polinización de Stenocereus pruinosus en el Valle de Tehuacán-Cuicatlán. México: BSc thesis, Escuela Nacional de Estudios Profesionales, Iztacala, México, Universidad Nacional Autónoma de México; 1996.
• [62]Valiente-Banuet A, Dávila P, Casas A, Arizmendi MC, Ortega-Ramírez J: Manejo, conservación y restauración de recursos naturales en México. In Diversidad biológica y desarrollo sustentable en la reserva de la biosfera Tehuacán Cuicatlán. Edited by Oyama K, Castillo A. México: Universidad Nacional Autónoma de México; 2006:248-277.