LITERATURE REVIEW ON COCOYAM

Project Information Document, , pp. Its wide harvesting window allows it to act as a famine reserve and is invaluable in managing flour schedules. Traditional Storage Aroids are stored in a variety of traditional low-cost structures such as shade, hut and underground pits. The likelihood of other factors other than GA to be involved in flowering in aroids has been suggested [ 96 ]. The petioles are thick, succulent, and often purplish. A significant population of cassava growers in Nigeria has made the transition from traditional production systems to the use of high- yielding varieties and mechanization of processing activities Nweke, et al According to BerryNigeria and Zaire posses both large and small scale farms on which cassava is grown by full-time and part-time farmers.

Selection can become much more efficient when the desired expression of the most important plant characteristics such as yield, eating quality and disease resistance are associated with such markers [ 35 ]. In severe attack, uproot the affected plant, bury it or burn it. It suffers from high seasonal price fluctuation for cassava products, uneven product quality, the absence of a national market information system, the lack of established grades and standard specifications for most cassava products, as well as poor linkages between producers, processors, traders and consumers. It however became more popular in African cultivation and diet than Taro which was earlier introduced from Southeast Asia [ 34 ]. The reliance everyday use by alice walker analysis essay cassava as a food source and the flouring review to the goitrogenic effects of thiocyanate has been responsible for the endemic goiters seen in the Akoko area of southwestern Nigeria. Economic analysis of cocoyam produc- tion in Osun State. The breeding schemes adopted by the breeding programmes are bi-parental crossing and recurrent selection.

Harvesting is carried out by lifting the corms by hand. Following the fermentation, the product becomes more acidic pH declines from about 5. It is grown principally for its tuberous root but its leaves are also eaten in some parts of Africa and used as animal feed in parts of Asia. As a result, cassava tapioca chips have litefature become a major source of ethanol production.

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Towards an Enhanced Breeding in Cocoyam: A Review of Past and Future Research Perspectives

Factorial or diallel designs should be implemented in order to provide precise estimates of additive and dominance variances in agronomic traits [ 79 ]. Asadu, et althe United Agricultural Extensions System UAES which ensures a single line of command in the review of technologies to the farmers has not been fully implemented for logistics reason, especially cocoym the cessation of work of the donor funds that were used for the take-off of this review instrument.

The first successful controlled hybridization of Taro in Nigeria was reported in year with seeds presently undergoing clonal cocpyam [ 81 ].

literature review on cocoyam

The inadequate of flour services in rural Nigeria is palpable. Cassava can be a powerful poverty fighter in Africa. High quality dehydrated poi made by freeze drying which had acceptable quality has been reported; however, the process was considered expensive. White ants cause damage on the tubers at any stage reviw development or even in storage.

Drying may not be sufficient, either.

(DOC) CHAPTER TWO LITERATURE REVIEW HISTORY OF COCO YAM | korede junior –

It has been shown that root rot disease might be associated with an increased peroxidase activity in the roots. Your use of any of these sample documents is subjected to your own decision NB: These conditions are literature in certain parts of Africa and South America.

Analysis of return on key resources Net farm profitB The implementation of recommendations in cocooyam to status of cocoyam production in West and Central Africa could serve as a working document for the region and should be given utmost rrview. Enter the email address you signed up with and we’ll email you a reset link. Taro is an ancient crop grown throughout the tropic and subtropics.

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West African Agricultural 3. Genetically distant cultivars are most desirable in hybridization schemes and development of populations [ ].

Literaturr good starting point will be to engage diversity of farmers with more genotypes from which they can make selections across diverse agro environments.

In South Pacific Island countries, edible teview, principally taro, form a high proportion of the root crops however in the Caribbean and West Africa, tannia dominates. Genetic markers associated with desired traits will increase the selection efficiency of conventional breeding.

Both species are generically called cocoyam in most parts of the tropics where they are grown Figure 1.

literature review on cocoyam

Fungal infection is also reduced. The conditions created inside the bag reduce moisture loss and facilitate the curing of wounds. Indeed, taro corms, cormels, and leaves are used to a limited extent as animal feed. The development of innovative strategies towards increasing multiplication rate of planting material, safe germplasm transfer and enhanced distribution of cocooyam varieties will ensure the sustainability of participatory breeding.

THE PROBLEM AND PROSPECTS OF COCOYAM PRODUCTION Agriculture Project T

Under these conditions, the storage life of taro corms has been extended for up to 4 weeks with no beneficial effect on the storage of tannia. High cost of labour for all production litearture. Swelling power was obtained by weighing the residue after centrifugation and dividing by original weight of flour on dry weight basis.

literature review on cocoyam

Cassava is widely cultivated and eaten as a staple food in Andhra Pradesh and in Kerala. The wider implication of this review is accelerated breeding and crop improvement.

The quantity of crop and expected market value are important considerations are selecting an appropriate transport system.