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Seasonal variation in heavy metal distribution in the sediments of selected dams in Nasarawa State, Nigeria

100%

Gav B. L., Aremu M. O., Etonihu A. C.

World News of Natural Sciences

2018

tom 20

The study was carried out to ascertain seasonal variation in heavy metal distribution in sediments from Dams located in Nasarawa State, Nigeria. Sediment samples were collected twice each at two different seasons for two years from May to September, 2014 and November-December, 2014 to March, 2015 for wet and dry seasons, respectively. Similarly, sediment samples were collected from May to September, 2015 and November-December, 2015 to March, 2016 for wet and dry seasons, respectively. The samples were then assessed for heavy metal properties, using atomic absorption spectrophotography (AAS). Analysis of variance (ANOVA) was then applied. The mean results of the heavy metal levels showed high values in dry seasons and low values in wet seasons in the two years of the study. Herein, the results of ANOVA revealed significant difference in the heavy metal concentrations between the seasons, dams and years. Our study also indicated that for heavy metals, the levels determined in sediments were within the WHO acceptable standards, except for Pb and Mn. These exceeded the WHO acceptable standards for drinking water. Based on these results, the dam waters are, therefore, polluted and unsuitable for human consumption, except after treatment.

Fenugreek (Trigonella foenum-graecum L.) seed: a review of physiological and biochemical properties and their genetic improvement

51%

Zandi P., Basu S. K., Khatibani L. B., Balogun M. O., Aremu M. O., Sharma M., Kumar A., Sengupta R., Li X., Li Y., Tashi S., Hedi A., Cetzal-Ix W.

Acta Physiologiae Plantarum

2015

tom 37

nr 01

Discovering the complexity of seed structure and function along with a number of vital processes such as seed growth and development, germination are important factors in unlocking the secrets of consistent crop yield. Fenugreek (Trigonella foenum-graecum L.), a multi-purpose annual, dryland-adapted, forage, legume crop is cultivated in different parts of the world with great potential for introduction under suitable agro-climatic zones in sub-Saharan Africa and Latin America. Fenugreek seed is used extensively for its medicinal, pharmaceutical and nutraceutical properties. It is effective in the treatment of diabetes, hyperglycaemia (thyroxine-induced type) and hypercholesterolemia. This review discusses seed physiological processes and several important biochemical seed constituent, e.g., steroidal sapogenins (diosgenin), polysaccharide fiber (galactomannan), amino acid (4-hydroxyisoleucine), etc, with important medicinal and pharmacological characteristics impacting human and animal health. However, there are noticeable differences in the quality of several phytochemicals found in fenugreek seed possibly due to variations in plant genotypes and agroclimatic conditions under which the crop is grown. Hence, it is important to note that for consistent seed yield and quality of fenugreek cultivars there is an urgent need for continuing efforts in genetic improvements and in developing high yielding, disease and drought-resistant varieties suitable for different agro-climatic conditions. Therefore, in addition to the physico-biochemistry of fenugreek seed different approaches for genetic improvement have also been discussed.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 World News of Natural Sciences

2 Aremu M. O.

1 Balogun M. O.

1 Basu S. K.

1 Cetzal-Ix W.

1 Etonihu A. C.

1 Gav B. L.

1 Hedi A.

1 Khatibani L. B.

1 Kumar A.

1 Li X.

1 Li Y.

1 Sengupta R.

1 Sharma M.

1 Tashi S.

1 Zandi P.

1 2018

1 2015

Wyniki wyszukiwania

Seasonal variation in heavy metal distribution in the sediments of selected dams in Nasarawa State, Nigeria

Fenugreek (Trigonella foenum-graecum L.) seed: a review of physiological and biochemical properties and their genetic improvement