Download e-book for kindle: Alternative agronomic crops by Patricia A Sauer; Appropriate Technology Transfer for Rural

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Barley has been widely considered as the plant likely to have been domesticated first. 2) and can be seen growing on the sides of the citadel (inset) in Aleppo, Syria. Wild and cultivated barley continue to interbreed (Bundock and Henry, 2004). Domestication of barley and the other cereals was based upon selection of this large seeded grass that grew in large populations that could be easily harvested. Wild barley shatters; that is, the seed falls from the plant when ripe to ensure dispersal and survival of the species.

The supply of water from the Nile will be essential to allow continued production in Egypt. Dryland agriculture in Africa is expected to suffer substantial adverse impacts from climate change. Climate change in Africa is likely to have overall strong negative impacts on people that are probably among those less able to cope with reductions in income or food supply. The likely impact and the need for efforts to adapt to climate change in Africa have been analysed by Dinar et al (2008).

G. many from rainforests) do not survive drying and storage, and they must be conserved ex situ as living specimens. Ex situ plant conservation options for plants in general (not just relatives of cultivated food crops) are discussed in more detail in Chapter 7. For cultivated plants, farmers fields remain a very important location for the conservation of diversity as farmers’ continue to grow traditional varieties and retain the seed from previous crops. These crops will often retain diversity that may be lost in the more intense genetic selection of elite varieties in plant breeding.

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