LITERATURE REVIEW ON COCOYAM

LITERATURE REVIEW ON COCOYAM

Cocoyam that are cultivated as food crops belong to either the genus colocasia or the genus xanthosoma and are generally comprised of a large spherical corm swollen underground storage stem , from which a few large leaves emerge. The potential of cocoyams as an animal feed is considerable and should not be ignored because of the high yield of petioles, top, and leaves. The geographical distribution of colocasia species indicates that the genus is naturally distributed from South Asia to Southeast Asia including China and Indonesia , in lowland tropics areas as well as in the cooler conditions of the Himalayan mountains [ 28 ]. This review presents a concise but timely effort to explore these breeding limitations while highlighting solutions to overcome these challenges. 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[14].

In trials with gamma-radiation, a minimum of 7 kGy was required to increase the shelf life of poi to days Moy et al. Some types with a double, multiple or fascinated spadix can be very productive. The study therefore seeks to examine and appraise the problems and prospects of cocoyam production in our society, a case study of Ovia North East Local Government Area. Botanically, the Dasheen is given the scientific name Colocasia esculentavar. There are two major types commonly grown in Nigeria namely; colocasia spp and xanthosma spp. Manasboonphempool for critically reviewing the manuscript.

Farmers in Fanteakwa obtained half of the total variable cost incurred in a cocoyam the highest revenue and margin basically because of production enterprise.

literature review on cocoyam

In parts of the Philippines, corms are stored in wooden platforms with the corms arranged in irregular rows and covered with dry grass and finally with soil. Cocoyam value chain Agricultural Economics, Agribusiness. Furthermore, ROI of areas. Inthe COSCA study found that how do i remember homework Nigeria, imported starch was being used in water-based literature mud for petroleum but other types of starch could be used if they gelatinize in cold water. Alocasia, Xanthosoma and Colocasia belong to the tribe Colocasiais in the sub-tribe Colocasinae; Xanthosoma in the subtribe Caladinae.

The researcher while trying to obtain information from respondents encountered certain drawback which hindered on farming system.

  CURRICULUM VITAE MENTERI KABINET KERJA

literature review on cocoyam

A vegetative growth index VGI that takes into account four vegetative traits has proved to be useful for the rapid assessment of genotypes with good yield potential [ ]. Simple tools such as hoe and knife are used to remove the soil around the corm.

Antinutritional and off taste problems have been related to content of needle-like raphides of calcium oxalate crystals and other acidic and proteinacious factors. Breeding programs of Taro were initiated in late s with varietal releases recorded in Fiji inSamoa in andSolomon Islands in andPapua New Guinea in and India in [ 7879 ].

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 flour safe for consumption the same evening.

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

The tolerance of cassava to extreme cocoyam condition, its low production resources requirements, its biological literature in the production of food energy, will lkterature cassava products gain more popularity in Nigeria Kormawa, et al, Sequel to this literatures via, Eggleston, et al submitted that cassava will have better yields and quality improved varieties, cultural practices and processing technology for a given level of income, the quality of commodity consumed becomes a function of its price Bouse, Share on Facebook Share on Twitter Share on Google Plus.

The continuous exposure of tannia tissue cultures to colchicine is an effective method for the production of synthetic tetraploids [ ]. Due to the difficulty observed in seed setting, there is a view that Taro and Tannia is sterile having lost its ability to set viable seeds or does so rarely [ 42 ].

The phenotypic expression of abnormal floral structures is strongly influenced by non-genetic factors. Breeding efficiency literathre achieved by conducting the selection process at an early stage of development without waiting for the plants to be uprooted.

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

Weeding and harvest- South and Asunafo North, respectively. On the other hand, ob North also yielded signiicantly higher ROA and returns farmers ,iterature the Asunafo North district earn more from to land than those in Asante Akyem South. Some types with a double, multiple or fascinated spadix can be very productive.

  EJEMPLOS DE EJERCICIOS DE PROBLEM SOLVING AND DATA SUFFICIENCY

Under on station trials researcher managed high yielding individuals are products of optimal agronomic growth conditions. This oil will also make your hair look healthier and fresher. The pits or trenches are usually dug in well-drained soil in shaded areas.

Use Of Composite Flour Blends For Biscuit Making (peanut/cassava Flour) | Afribary

Swelling power was obtained by weighing the residue after centrifugation and dividing by original weight of flour on dry weight basis. This will result to farmers making diverse selections for varying farming systems. In addition to sustaining food security in domestic market, it also brings import earnings [ 10 ].

literature review on cocoyam

This has limited application of post-harvest technologies to maintain quality and improve marketing potential. The supernatant was decanted and then the sample was reweighed.

Low market demand of value added produce by the consumer. The quantity of crop and expected market value are important considerations are selecting an appropriate transport system.

Additionally, the TANSAO network developed a descriptor list using major agro-morphological markers in all of the partner countries with a view to select national core samples to form a regional core collection [].

The weight and final volume of flour in the cylinder was noted, and the difference in weight and volume were determined. Aside the implication of pro- sive to cocoyam production and hence cannot adequately duction decline on food and income security, it is impera- explain the decline in cocoyam production.

However, they did their main source of labour Cocoyam that are cultivated as food crops belong to either the genus colocasia or the genus xanthosoma and are generally comprised of a large spherical corm swollen underground storage stemfrom which a few large leaves emerge. 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.