Future Threats and Opportunities Facing Crop Wild Relatives and Landrace Diversity

2020 ◽  
pp. 351-364
Author(s):  
Chainika Gupta ◽  
Romesh Kumar Salgotra ◽  
Gulshan Mahajan
Keyword(s):  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Landrace Diversity

Crop wild relatives and their conservation strategies in China

2014 ◽  
Vol 21 (6) ◽  
pp. 750-757
Author(s):  
Yu Yanbo ◽  
Wang Qunliang ◽  
Kell Shelagh ◽  
Maxted Nigel ◽  
V. Ford-Lloyd Brian ◽  
...  
Keyword(s):  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Conservation Strategies

scholarly journals Status of the Ex Situ and In Situ Conservation of Brazilian Crop Wild Relatives of Rice, Potato, Sweet Potato, and Finger Millet: Filling the Gaps of Germplasm Collections

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 638
Author(s):  
Marcelo B. Medeiros ◽  
José F. M. Valls ◽  
Aluana G. Abreu ◽  
Gustavo Heiden ◽  
Suelma Ribeiro-Silva ◽  
...  
Keyword(s):  
Finger Millet ◽  
Ex Situ Conservation ◽  
Gap Analysis ◽  
In Situ Conservation ◽  
Germplasm Collection ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Ex Situ ◽  
The Status

This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled “Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives” supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O’Donell, I. ramosissima (Poir.) Choisy, I. tiliacea (Willd.) Choisy, I. triloba L., and I. cynanchifolia Meisn. The status of the ex situ and in situ conservation of each taxon was assessed using the gap analysis methodology, and the results were used to plan 16 germplasm collection expeditions. Seeds of the collected material were evaluated for viability, and the protocols for seed germination and cryopreservation were tested. The final conservation score, resulting from the gap analysis and including the average of the ex situ and in situ scores, resulted in a classification of medium priority of conservation for all the species, with the exception of I. grandifolia (high priority). The total accessions collected (174) almost doubled the total accessions of these crop wild relatives incorporated in Embrapa’s ex situ conservation system prior to 2015. In addition, accessions for practically absent species were collected for the ex situ conservation system, such as Ipomoea species, Eleusine indica, and Solanum chacoense. The methods used for dormancy breaking and low temperature conservation for the Oryza, Eleusine, and Ipomoea species were promising for the incorporation of accessions in the respective gene banks. The results show the importance of efforts to collect and conserve ex situ crop wild relatives in Brazil based on previous gap analysis. The complementarity with the in situ strategy also appears to be very promising in the country.

scholarly journals Crop Wild Relatives Crosses: Multi-Location Assessment in Durum Wheat, Barley, and Lentil

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2283
Author(s):  
Noureddine El Haddad ◽  
Miguel Sanchez-Garcia ◽  
Andrea Visioni ◽  
Abderrazek Jilal ◽  
Rola El Amil ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Protein Content ◽  
Climatic Factors ◽  
Selection Index ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Yield Potential ◽  
Zn Concentration ◽  
Zn Content ◽  
Dryland Crops

Crop wild relatives (CWR) are a good source of useful alleles for climate change adaptation. Here, 19 durum wheat, 24 barley, and 24 lentil elites incorporating CWR in their pedigrees were yield tested against commercial checks across 19 environments located in Morocco, Ethiopia, Lebanon, and Senegal. For each crop, the combined analysis of variance showed that genotype (G), environment (E), and genotype x environment (GxE) effects were significant for most of the traits. A selection index combining yield potential (G) and yield stability (GxE) was used to identify six CWR-derived elites for each crop matching or superior to the best check. A regression analysis using a climate matrix revealed that grain yield was mostly influenced by the maximum daily temperature and soil moisture level during the growing stages. These climatic factors were used to define five clusters (i.e., E1 to E5) of mega-environments. The CWR-derived elites significantly outperformed the checks in E1, E2, and E4 for durum wheat, and in E2 for both barley and lentil. The germplasm was also assessed for several food transformation characteristics. For durum wheat, one accession (Zeina) originating from T. araraticum was significantly superior in mixograph score to the best check, and three accessions originating from T. araraticum and T. urartu were superior for Zn concentration. For barley, 21 accessions originating from H. spontaneum were superior to the checks for protein content, six for Zn content, and eight for β-glucan. For lentil, ten accessions originating from Lens orientalis were superior to the check for protein content, five for Zn, and ten for Fe concentration. Hence, the results presented here strongly support the use of CWR in breeding programs of these three dryland crops, both for adaptation to climatic stresses and for value addition for food transformation.

scholarly journals Conservation in the Future

Conservation ◽  
2021 ◽  
pp. 361-400
Author(s):  
Charles Perrings
Keyword(s):  
Ecosystem Services ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Forest Conversion ◽  
The World Bank ◽  
The World ◽  
The Future ◽  
Subsidiarity Principle ◽  
Economic Trends

The final chapter considers the factors likely to influence the value of species and ecosystems to individual users and the wider community in the future, including the factors likely to drive a wedge between the value of ecosystems to individual users or individual communities and to the rest of the world. It reviews environmental trends identified by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, and economic trends identified by organizations such as the World Bank. Using the European Union’s subsidiarity principle as a guide, the chapter discusses the optimal scale at which to manage future conservation challenges, and the implications this has for governance. It concludes by applying the discussion to four issues of particular concern: forest conversion, the loss of landraces and crop wild relatives, marine capture fisheries, and emerging infectious zoonoses.

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