Swelling power was obtained by weighing the residue after centrifugation and dividing by original weight of flour on dry weight basis. In spite of its importance as a staple food in many countries, cocoyam remains a neglected crop mainly grown for subsistence agriculture. They may not be toxic as such, but can reduce the nutritional value of a plant by causing a deficiency in essential nutrients or preventing thorough digestion when consumed. Samoa and Tonga have prominent depictions of cocoyam on their currencies [ 8 ]. Limited purchasing power of consumers.
Effects of cocoyam anti nutritional factors range from reductions of food and feed intake, with depression of weight gain, to pancreatic hypertrophy in experimental animals. Interestingly, produce price per used for carrying out activities like weeding, spraying and kg was not found to be signiicantly diferent in Asunafo harvesting which is carried out manually. The first descriptor list for Taro, developed by international board for plant genetic resources was used in earlier attempts to characterize germplasm [ ]. Additionally vitamin C acts as an antioxidant, which moderately prevents the development of conditions such as heart disease and cancer. Help Center Find new research papers in:
On hydrolysis, these release hydrocyanic acid HCN.
Towards an Enhanced Breeding in Cocoyam: A Review of Past and Future Research Perspectives
Manioc is also used in cocoyam number of commercially available laundry products, especially as starch for shirts and other garments. Garri has a long shelf-life a year or lliterature as long as it is not exposed to moisture. This review presents a concise but timely effort to explore these breeding limitations while highlighting solutions to overcome these challenges. In comparison with traditional storage in trenches or pits, corms kept in polyethylene bags survived well for up to 30 days without appreciable changes in taste and texture.
By eliminating these free radicals, our general health is almost guaranteed! The main tuber is often harvested with the smaller corms left to develop later. Experimental trials indicate that up to 7 metric tonnes of revisw leaves and petioles per ha can be achieved in a 3-month period.
Taro seeds were dispersed by birds, and palm civets. Shovels are also used. It will be very useful to develop haploids, such that with the duplication of the chromosome number it will be possible to obtain homozygous diploids which are essential in Mendellian studies of qualitative inheritance.
It was observed that for all the antinutrients studied, cookies from Results obtained for the physical properties of the cookies are shown in Table 4.
Alocasia, Xanthosoma and Colocasia belong to the tribe Colocasiais in the sub-tribe Colocasinae; Xanthosoma in the subtribe Caladinae. The leaves and petioles are used as green vegetables after thorough removal of the revew elements through special processing [ 3 ].
(DOC) CHAPTER TWO LITERATURE REVIEW HISTORY OF COCO YAM | korede junior –
Traditional storage systems are mainly suited for short-term storage and have limited success with long-term storage, which is necessary for marketing beyond the harvest period. This study is centred on planning of cocoyam in our local government council Ovia North East with more emphasis on cocoyam production.
In its prepared forms in which its toxic or unpleasant components have been reduced to acceptable levels, it contains an extremely high proportion of starch. Kohl and Wilson  deined return on investment ROI as a ratio of net Analytical framework farm income or proit adjusted by interest expenses and Both descriptive and inferential statistics were employed opportunity cost for unpaid labour and management rel- in the study to analyse the socio-economic and farm-level lliterature to the average cost of litedature as speciied in Eq.
This approach has been effective in cassava breeding in Africa where Latin American germplasm has been successfully introgressed into African germplasm [ ].
To circumvent the likelihood of inbreeding depression in the course of breeding, the recurrent parent should be replaced in each new backcross by a different genotype that is phenotypically similar. Flowering of wild cultivars is common in its natural environment but ckcoyam they are transferred from this optimal natural environment to field conditions they often continue to flower, sometimes even more intensively but the inflorescences are smaller with little or no pollen.
High levels of vitamin A, vitamin C, and rebiew other phenolic antioxidants found in taro root helps to boost immune system and help eliminate dangerous free radicals from our system. Comparisons between the nutrient content of cassava and other major staple foods when raw, as shown in the tablemust be interpreted review caution because most staples are not edible in such flours and many are indigestible, even dangerously poisonous or otherwise harmful.
Africa in the last three decades has consistently accounted for an increasing percentage of global cocoyam production, which currently stands at about 10 million tonnes per annum FAO, The traditional method used in West Africa is to flour the roots and put them into water for three days to ferment.
Additionally vitamin C acts as an antioxidant, which moderately prevents the literaure of conditions such as heart disease and cancer. In any revidw endeavour, there are bound to be some obstacle or hindrance in any of achieving exception to this general rule. In that time, about 83 percent of the cyanogenic glycosides are broken down by the linamarase; the resulting hydrogen cyanide escapes to the atmosphere, making the vocoyam safe for consumption the same evening.
High quality dehydrated poi made by freeze drying which had acceptable cocoywm has been reported; however, the process was considered expensive. In order to minimise labour Received: The trenches may also covered with dry grass and finally soil. The limited genetic diversity within cultivated gene pools threatens sustainable production [ 69 – 71 ].
An intuitive approach latter formed its own canopy. Cocoyam leaves are also used as vegetable for preparing soup in various part of the world.
Global distribution of cocoyam taro and tannia production. International revies exchange as envisioned in recent international projects play an important role in broadening genetic diversity.