NSUK Repository :: Browsing by Author "Aliyu, Tukur Nafisatu"

Browsing by Author "Aliyu, Tukur Nafisatu"

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Open Access
BIOLOGY TEACHINl in Nigerian Secondary & Tertiary Schools
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2009-03-12) Isa, Hauwa'u; Aliyu, Tukur Nafisatu
Open Access
Chromosome behaviour in Gynandropsis gynandra (Linn)
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2007-03-05) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Malgwi, M.M.
In this research a local species, Gynandropsis gynandra was investigated cytologically with respect to its chromosomal status. It was found to have a haploid number n — 9. the species is therefore essentially a tetraploid with 4n — 36. Chiasmata frequency per bivalent was analyzed at diplotene and diakinesis; the chiasmata frequency was low at diplotene. The reason for failure of pairing amongst pairable chromosome mates was assumed to be as a result of genetic dissimilarity of individual chromosomes. Cases of unpaired chromosome segments at pachytene may probably be due to the fact that these regions were non-homologous or lack adequate time to complete the pairing or the regions might have lied farthest apart from the point at which pairing was initiated.
Open Access
CYTOLOGICAL DILEMMA ON THE PROLIFIC REPRODUCTION OF EICHHORNIA CRASSIPES IN LAKE GERIYO ADAMAWA, NIGERIA
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2023-02-20) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Tahir, S.M.
Chromosomal and karyological studies were carried out on Eichhornia crassipes and the taxon was found to have 32 individual chromosomes with a haploid chromosome number of 16 (n=16), indicating a clear tetraploid genome of 2n=4x=32. At diplotene and diakinesis, chiasma frequencies per nucleus/bivalent were analyzed revealing a marked reduction of chiasmata at diakinesis as compared to diplotene. The very low terminalization value of 0.43 showed that most of the chiasmata were terminalized at diakinesis and metaphase I. Multivalent associations were frequent suggesting the presence of a translocation heterozygote. Univalents were also of a frequent occurrence. Chromatid bridges, fragments, laggards and eliminated chromosomes were also as frequent at both MI and MII. Secondary association of chromosomes occurred with a preponderance of four and eight over other groups. Eichhornia crassipes has a high propensity to proliferate asexually by means of offsets and this probably accounts for its prolific reproduction rate which has so far defied all known control measures Thus, this investigation revealed that the massive rate of invasion of this plant could be traced to its very high rate of mitosis, a significant deviation from what obtains in other Higher plants. The occurrence of these aberrations might have influence the prolific behaviour of the plant hence the need for further research be carried out in order to find out if there is any relationship between cytological studies and prolific reproduction.
Open Access
Cytological Studies in Eichhornia crassipes (Mart.) Solms
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2015-10-03) Isa, Hauwa'u; Egbuche, K.C.; Malgwi, M.M; Aliyu, Tukur Nafisatu
Chromosomal studies were carried out on Eichhornia crassipes and the taxon was found to have 32 individual chromosomes with haploid chromosome number of 16 (n=16), indicating a clear tetraploid genome of 2n =4x =32, chiasmata frequencies per nucleus/bivalent were analyzed at diplotene and diakinesis revealing a marked reduction of chiasmata at diakinesis as compared tobdiplotene . the very low terminalization value of 0.43 showed that most of the chiasmata were terminalized at diakinesis and metaphase I. Multivalent associations were frequent suggesting the presence of a translocation heterozygote . Univalents were also frequent occurrence .chromatid bridges , fragment, Laggards and eliminated chromosomes were also frequent at both MI and MII. Secondary association of chromosomes occurred with a prepodence of four and eight over other groups.
Open Access
CYTOLOGICAL STUDIES OF CLEOME GYNANDRA (LINN)
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2008-03-12) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Malgwi, M.M.
Cleome gynandra was investigated cytologically with respect to its chromosomal status. It was found to have a haploid number n = 9. The species is essentially a tetraploid with 4n = 36. Chiasmata frequency per bivalent was analyzed at diplotene and diakinesis; the chiasmata frequency was moderate at diplotene. The reason for failure of pairing amongst pairable chromosome mates was assumed to be as a result of genetic dissimilarity of individual chromosomes. Cases of unpaired chromosome segments at pachytene may probably be due to the fact that these regions were non-homologous or lacked adequate time to complete the pairing or the regions might be lying farthest apart from the point at which pairing was initiated.
Open Access
DAILY MITOTIC INDEX OF THE OFFSETS OF EICHHORNIA CRASSIPES IN LAKE GERIYO, ADAMAWA STATE AND ITS PROBABLE EFFECTS ON THE PLANT’S REPRODUCTION AND PROLIFERATION
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2014-09-07) Isa, Hauwa'u; Aliyu, Tukur Nafisatu
The daily Mitotic cycle in the offsets of Eichhornia crassipes was investigated. The species Eichhornia crassipes ((Mart.) Solms-Laubach) of the family Pontederiaceae was found to have 2n=36 and n=18 number of chromosomes. Pearson’s Correlation Coefficient, n=12, prob>/r/under Ho: Rho=0 was used in comparing day and night cycles. Mitosis in the offsets of E. crassipes occurred throughout the day and night with interphase and prophase stages being predominating and showing negative relationships with each other. There were no significant differences in the day time cycles, neither were there any significant difference in the night cycle at p=0. 01. And as it was for interphase and prophase, all other stages were generally frequent during the night cycle as well as the day cycle. The analysis also showed that although the offsets for the two experiments were collected on two separate days, the results at the end of first cycle (5.00 p.m.) merge imperceptibly into those at the beginning of the second cycle (6.00 p.m.). The taxon having indicated at least two mitotic peaks within the same 24 hours duration suggest that E. crassipes is mitotically vigorous and that more than two separate cell cycles are possible within a period of 24 hours. This probably may suggest why the plant is extremely gregarious in the field and proliferates faster than any other known taxon except bacteria. This may also lend support to the speculation that the mitotic E. crassipes has some under laying inherent pattern and that this partern may be too rigid for change. Statistical analysis also confirmed that the day cycle showed no significant variations from the night cycle, temperature rather than illumination seems to be the factor influencing mitosis in E. crassipes.
Open Access
DIFFERENCES IN PERFORMANCE IN NCE SCIENCE AND MATHEMATICS BASED ON GENDER
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2004-06-03) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Kidah, Maimuna I.
The study compares differences in the performance of males and females in NCE Science and Mathematics subjects from 1996-2002, in FCE Yola. The sample was made up of 494 males and 221 females totalling 715. Chi-square test was used for data analysis. The study revealed that males do not perform better than females in Science and Mathematics.
Open Access
EFFECTS OF SEXUAL REPRODUCTION ON THE PROLIFERATION OF EICHHORNIA CRASSIPES IN LAKE GERIYO ADAMAWA NIGERIA
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2017-01-18) Isa, Hauwa'u; Aliyu, Tukur Nafisatu
Eichhornia crassipes an attractive, floating waterweed with a fibrous root system and dark green rounded leaves and light purple flowers reproduces sexually through the production of vast quantities of seeds. The plant grows so quickly that the surface covered by the mats doubles every 4-5 days producing 33,000 tons fresh weight per hectare annually. As one of the most productive plants on earth, a mat of medium sized plants contains 2 million plants with each individual plant producing at least 140 million others. This investigation attempts to find out the effects of sexual reproduction on the proliferation of Eichhornia crassipes in Lake Geriyo Adamawa Nigeria. Pollen formation and germinability of Eichhornia crassipes being one of the fastest growing plant revealed that 100% of its pollens harvested from the Lake were morphologically deformed. Out of the 1500 pollens scored, 25 (1.67%) showed very slow pollen tube development within 12 hrs. The pollen protoplast in both germinated and non-germinating grains showed signs of collapsing cytoplasm and at the end of the 24 hrs, the protoplasts of 75% of those that germinated and 50% of those that did not germinate disintegrated. Thirty five percent (35%) of the pollen grains showed knobby protuberances only on the grain surface which did not develop further into a pollen tube. Eichhornia crassipes which was found to be sexually sterile revealed the formation of phragmoplast at anaphase a rare occurrence and that sexual reproduction has no effect on the proliferation of Eichhornia crassipes in Lake Geriyo Adamawa Nigeria, therefore the need for further research to find out the reasons for the rapid prolific reproduction of the plant in order to control it.
Open Access
EMPOWERING WOMEN WITH SCIENCEAND TECHNOLOGY EDUCATION FOR SELF-RELIANCE AND NATIONAL DEVELOPMENT.
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2005-08-04) Isa, Hauwa'u; Aliyu, Tukur Nafisatu
This paper examines the role of science and technology education as a panacea for women empowerment. Benefits of science and technology> education for women were discussed and its significance in empowering women for self-reliance and national development highlighted. The type of science curricula required for development were explained as the one that will bridge the gap between theory and practice, as the functional and self-reliant type of education, ways of redirecting the curriculum on a right course in order to improve women education in science and technology to enhance self-reliance and nation building were suggested.
Open Access
FIELDWORK AS AaRACTICAL APPROACH TO EFFECTIVE TEACHING OF ECOLOGICAL CONCEPTS FOR SUSTAINABLE DEVELOPMENT IN NIGERIA
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2008-02-05) Isa, Hauwa'u; Aliyu, Tukur Nafisatu
Open Access
GENDER BARRIERS TO GIRL-CHILD EDUCATION IN ADAMAWA CENTRAL SENATORIAL DISTRICT
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2024-02-04) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Bala, Mohammed Aisha
Access to education is a key element of girl-child's right. Data on enrolment pattern in Adamawa state in general and Adamawa Central Senatorial District in particular reveals that disparities exist between the enrolment of males and females into primary and junior secondary schools. These disparities are as a result of notable barriers which are the major objectives of this paper they were identified as parents' education, their socioeconomic status, religion and cultural attitudes/practices. These identified obstacles were hypothesized. Questionnaires and oral interviews were administered to both literate and illiterate parents thereby producing results which justified the barriers as the genesis of the existing gap between males'and females' enrolments. Based on the findings, recommendations were proffered.
Open Access
GENETIC ENGINEERING AND ITS APPLICATIONS
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2002-12-03) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Anyanwu, Felix O.
Discoveries leading to the elucidation of the structure and metabolism of nucleic acids resulted in recombinant DNA technology with the power to modify these molecules in many fundamental ways. This technology presents endless possibilities in all biological sciences. In this brief review, we considered the basic principles of genetic engineering and characterization of nuclei acids that provide the tools for biological applications. Some medical, pharmaceutical, agricultural and industrial applications were briefly discussed. The overall goal is to introduce bioscientists to this technology with a view to influencing the way and approach to all biosciences in the coming years.
Open Access
GLOSSARY OF BOTANICAL TERMS
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2008-04-12) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Anyanwu, Felix O.; Maigwi, M.M.
Open Access
INCREASING TEACHER CAPACITY IN THE USE OF MICROSCOPY TECHNIQUE IN TEACHING AQUATIC MICRO ORGANISMS
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2009-07-10) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Mohammed, Aisha
Increasing teacher capacity in the use of laboratory techniques has become necessary in view of the poor performance of students in SSCE biology practical examinations. This paper looks at microscopy as a biology laboratory technique and examines how to enhance teacher capacity in microscopy It highlights the basic laboratory techniques and the procedures involved in the preparation of materials for light microscopy. Some workshop activities have been included which serve as drill exercises for the participants. The paper recommends that the encouragement of microscopy as a laboratory technique to be employed by teachers regularly in teaching practical lessons.
Open Access
POLLEN FERTILITY IN GYNANDROPSIS GYNANDRA (LINN.)
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2008-06-03) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Malgwi, M.M.
In this research a local species, Gynandropsis gynandra was investigated cytologically with respect to its pollen fertility. The researchers analyses one thousand and fifty pollen grains out of which 325 were found to be morphologically sterile (31.0%) and 725 (69.0%) were morphologically fertile. Although the study reveals a high percentage of fertile pollen, not all the pollens may be viable as other studies have earlier revealed that nearly half of the morphologically fertile pollens were non viable. Hence the need for further research on pollen viability to establish the degree of fertility of the plant in question.
Open Access
THE PREVALENCE OF HIV/AIDS IN ADAMAWA STATE OVER A FIVE YEAR PERIOD (1996-2000)
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2004-12-09) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Sawa, Mary
This paper analysed the prevalence of HIV/AIDS in Adamawa State over a five year period (1996-2000). Hospital records of: In and out patients of Federal Medical Centre (FMC) Yola, who were screened for HIV/AIDS between 1996 to 2000 using ELISA (Enzyme-linked immunosorbent-Assay) kit were examined. The results s/joived an increase in recorded HIV/AIDS cases from 98 in 1996 to 398 in 2000. Civil servants were the most affected with a mean percentage of 35.4%, followed by housewives with 17.4% and the least affected were farmers with 1.9%. The mean age of victims fell between the ages of 27 and 31 years for both females and males, m°st °' w 0 reside in urban areas. It is strongly believed that enlightenment campaigns can reduce incidence of HIV/AIDS in Adamawa State.
Open Access
THE ROLE OF DEMOCRACY IN SUSTAINING SCIENCE AND TECHNOLOGY IN NIGERIA
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2002-03-05) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Sawa, Mary; Anyanwu, Felix O.
Open Access
ROLE OF NON-GOVERNMENTAL ORGANIZATIONS IN WOMEN EMPOWERMENT IN THE NORTH-EAST SUB-REGION
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2001-06-11) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Sawa, Mary
Given the political and social climate in Nigeria, there is the need to look for the Non Governmental Organizations (NGOs) to assist in finding solutions to some of the social needs and problems of women in the NorthEast sub-region of the country. The purpose of this paper is to examine the role of NGOs in national development The paper gives highlights of who NGOs are and their types; involvement of NGOs in women enterprise; empowerment through NGOs; and the journey made so far were also issues discussed. Recommendations were made based on the identified needs of women.
Open Access
SCIENCE CURRICULUM IMPLEMENTATION IN TIIE NEW MILLENNIUM
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2002-06-03) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Abdullahi, A.L.; Olarinoye, R.D.
Science Curriculum has had some constraints in its implementation rights from the time education came to Nigeria. This was associated with the foreign nature of the subject, its abstractness and lack of instructional materials. The traditional beliefs of the people and medium of instruction also has not been left out in the hindrances to the effective implementation. This paper therefore looked at the frend of science curriculum implementation in the pre and post colonial days; most especially in the new millennium pointing out the problems associated with the implementation. Recommendations were also proffered with the aim of achieving a successful and effective science curriculum implementation in Nigeria.
Open Access
A SURVEY OF MEDICINAL PLANTS IN YOLA ECOLOGICAL ZONE
(Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2005-06-06) Isa, Hauwa'u; Aliyu, Tukur Nafisatu; Bala, Mohammed Aisha
A survey of medicinal plants in Yola ecological zone was conducted between March and August, 2004. A total of 6o plant species belonging to 29 families were observed. They are mostly trees, a few are shrubs and the remaining are herbs. These species of plants were identified, parts used and the diseases they cure were obtained from ten re-known herbalists by means of oral interview. The result of investigation is summarised in a table where the Fulfulde, Hausa, English (for few) botanical, family names, parts used and the diseases they cure were all presented.