As complementary conservation remains largely a 'concept' it would be important to proofing this concept with concrete examples of conservation efforts in which in situ and ex situ approaches are combined. In situ conservation typically includes crop wild relatives and wild food plants (when focusing on PGRFA - as we do here) whereas on-farm conservation (including management) aims at farmers' varieties, traditional varieties, landraces, obsolete varieties, weedy forms and other types of genetic diversity that are part of our crop genepools.
combining the two approaches to assure safe longterm conservation of relevant within-species diversity. If the two approaches are combined – Ex situ conservation can provide • Safety back-up of in situ conservation • Facilitated use of in situ and ex situ conserved populations • Conservation of CWR species/populations for which in situ conservation is not the best approach – In situ conservation can provide • Conservation of whole populations • Broad spectrum conservation (whole ecosystem, many species) • Conservation of adaptive processes in the natural environment (potential adaptation to changes in the climate, disease pressures etc.)
combining the two approaches to assure safe longterm conservation of relevant within-species diversity. If the two approaches are combined – Ex situ conservation can provide • Safety back-up of in situ conservation • Facilitated use of in situ and ex situ conserved populations • Conservation of CWR species/populations for which in situ conservation is not the best approach – In situ conservation can provide • Conservation of whole populations • Broad spectrum conservation (whole ecosystem, many species) • Conservation of adaptive processes in the natural environment (potential adaptation to changes in the climate, disease pressures etc.)
Whereas I am in full agreement with the possible advantages of in situ and ex situ you have listed separately approaches, I was hoping for concrete examples of conservation strategies for a given species or a group of species in which these two approaches are duly integrated.
Jan, The Treaty-funded project on wheat landrace conservation and utilization provides an example of a strategy under development and in progress. Contact A. Morgounov [CIMMYT] for details. Collections made on Turkey national scale are in gene banks , but samples are being evaluated in research and farmer's fields. This includes selection among and within landraces and backcrossing important resistance genes into landrace populations. Some details presented in the following papers. Hope this helps. Cal Qualset
2015 Kan, M., M. Küçükçongar, M. Keser, A. Mourgonov, H. Müminjanov, F. Özdemir, and C. Qualset. Wheat landraces in farmer’s fields in Turkey: National survey, collection and conservation, 2009-2014. FAO Subregional Office, Ankara, Turkey. 180 p.
2016 Kan, M., M. Küçükçongar, A. Morgounov, M. Keser, F. Özdemir, H. Müminjanov and C. Qualset. Wheat landraces production on farm level in Turkey: Who is growing in where? Pakistan Journal of Agricultural Sciences 53:159-169.
2016 A. Morgounov, A., M. Keser, M. Kan, M Küçükçongar, F. Özdemir, N. Gummadov, H. Muminjanov, E. Zuev, and C.O. Qualset.. Wheat landraces currently grown in Turkey: Distribution, diversity, and use. Crop Science 56:3112-3124.
2016 C.O. Qualset, F Castillo-Gonzales, A Morgounov, M Keser, and F Özdemir. Agrobiodiversity: Prospects for a genetic approach to in situ
conservation of crop landraces. Indian Journal of Plant Genetic Resources 29:278-280.
2017 Kan, Mustafa,, M Küçükçongar, A. Morgounov, M. Keser, F. Özdemir, H. Muminjanov, C. O. Qualset. Türkiye’de Yerel Buğday Popülasyonlarının Durumu ve Yerel Buğday Üreten Üreticilerin Üretim Kararlarında Etkili Olan Faktörlerin Belirlenmesi. Journal of Gaziosmanpasa University Agricultural Faculty (JAFAG). 33:9-18. [The General Situation of Wheat Landrace Populations and Factors Affecting Production Decisions of Wheat Landrace Producers in Turkey]
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