scholarly journals Genetic Diversity on Amaranthus hybridus L., Amaranthus viridis L. and Amaranthus spinosus L. in parts of Rivers State, Nigeria

2019 ◽  
Vol 23 (10) ◽  
pp. 1881-1885
Author(s):  
C.O. Ozimede ◽  
G.C. Obute ◽  
B.L. Nyananyo
Keyword(s):  
Genetic Diversity ◽  
High Rate ◽  
Local Alignment ◽  
Amaranthus Hybridus ◽  
Dna Characterization ◽  
The Family ◽  
Amaranth Species ◽  
Edible Seeds ◽  
Elevated Rate ◽  
Rivers State

The Amaranth plants are annuals or short-lived perennials with over 103 species of flowering plants in the family Amaranthaceae, distributed nearly worldwide. Several amaranth species are useful as food crops and are grown both for their leaves and for their edible seeds, which are a nutritious pseudocereal (nongrass seeds used like cereal grains). This paper reports the genetic diversity of three species of Amaranthus (A. hybridus L., A. viridis L. and A. spinosus L.) in Rivers state of Nigeria. Result obtained from this research showed high rate of diversity. DNA characterization and sequencing of the species were done through plastid Ribulose-1,5biophosphate Carboxylase large chain (rbcL) genetic marker to determine the rate of genetic variation among members of this genus in our study area. The sequence figures were firstly compared on Basic Local Alignment Sequence Tool for validation. Phylogenetic and molecular evolutional analysis was conducted using MEGA version 7. The dendogram of the molecular phylogeny generated from MEGA 7 software shows elevated rate of variation among studied species.Keywords: Amaranthus, Genetic, Diversity, rbcl

scholarly journals A systematic revision of Capparaceae and Cleomaceae in Egypt: an evaluation of the generic delimitations of Capparis and Cleome using ecological and genetic diversity

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Mohamed Abd. S. El zayat ◽  
Mahmoud El Sayd Ali ◽  
Mohamed Hamdy Amar
Keyword(s):  
Genetic Diversity ◽  
Morphological Characteristics ◽  
Systematic Position ◽  
Diversity Analysis ◽  
Polymorphic Markers ◽  
Ecological Distribution ◽  
Specific Group ◽  
Systematic Revision ◽  
Dna Evidence ◽  
The Family

Abstract Background The Capparaceae family is commonly recognized as a caper, while Cleomaceae represents one of small flowering family within the order Brassicales. Earlier, Cleomaceae was included in the family Capparaceae; then, it was moved to a distinct family after DNA evidence. Variation in habits and a bewildering array of floral and fruit forms contributed to making Capparaceae a “trash-basket” family in which many unrelated plants were placed. Indeed, family Capparaceae and Cleomaceae are in clear need of more detailed systematic revision. Results Here, in the present study, the morphological characteristics and the ecological distribution as well as the genetic diversity analysis among the twelve species of both Capparaceae and Cleomaceae have been determined. The genetic analysis has been checked using 15 ISSR, 30 SRAP, and 18 ISTR to assess the systematic knots between the two families. In order to detect the molecular phylogeny, a comparative analysis of the three markers was performed based on the exposure of discriminating capacity, efficiency, and phylogenetic heatmap. Our results indicated that there is a morphological and ecological variation between the two families. Moreover, the molecular analysis confirmed that ISTR followed by SRAP markers has superior discriminating capacity for describing the genetic diversity and is able to simultaneously distinguish many polymorphic markers per reaction. Indeed, both the PCA and HCA data have drawn a successful annotation relationship in Capparaceae and Cleome species to evaluate whether the specific group sort individual or overlap groups. Conclusion The outcomes of the morphological and ecological characterization along with the genetic diversity indicated an insight solution thorny interspecies in Cleome and Gynandropsis genera as a distinct family (Cleomaceae) and the other genera (Capparis, Cadaba, Boscia, and Maerua) as Capparaceae. Finally, we recommended further studies to elucidate the systematic position of Dipterygium glaucum.

scholarly journals Genetic and Morphological Characterization of Mangifera indica L. Growing in Egypt

HortScience ◽  
2018 ◽  
Vol 53 (9) ◽  
pp. 1266-1270 ◽  
Author(s):  
Nader R. Abdelsalam ◽  
Hayssam M. Ali ◽  
Mohamed Z.M. Salem ◽  
Elsayed G. Ibrahem ◽  
Mohamed S. Elshikh
Keyword(s):  
Genetic Diversity ◽  
Mangifera Indica ◽  
Morphological Characteristics ◽  
Morphological Characterization ◽  
Molecular Techniques ◽  
Germplasm Management ◽  
Fruit Crops ◽  
The Family ◽  
High Diversity

Mango (Mangifera indica L.) is a fruit crops belong to the family Anacardiaceae and is the oldest cultivated tree worldwide. Cultivars maintained in Egypt have not been investigated previously. Mango was first brought to Egypt from South Asia. Morphological and molecular techniques were used to identify the genetic diversity within 28 mango cultivars. SSR and EST-SSR were used for optimizing germplasm management of mango cultivars. Significant variations were observed in morphological characteristics and genetic polymorphism, as they ranged from 0.71% to 100%. High diversity was confirmed as a pattern of morphological and genotypes data. Data from the present study may be used to calculate the mango relationship and diversity currently grown in Egypt.

Comparative chemotaxonomic investigations on amaranthus hybridus l. and Amaranthus spinosus L.

2021 ◽  
Vol 20 (1) ◽  
pp. 91-100
Author(s):  
C. Wahua ◽  
J. Nwikiri
Keyword(s):  
Niger Delta ◽  
Vascular System ◽  
Vascular Bundles ◽  
Stomatal Index ◽  
Amaranthus Hybridus ◽  
Anatomical Studies ◽  
Amaranthus Spinosus ◽  
The Family ◽  
Phytochemical Studies ◽  
Key Words Morphology

The present study is set to investigate the comparative chemotaxonomic investigations on Amaranthus hybridus L. and Amaranthus spinosus L. which belong to the family Amaranthaceae. They are dicots pre-dominantly found in the Niger Delta Tropics, Nigeria. The species are annual erect herbs with flower inflorescences as elongated spikes which are mostly paniculate occurring at ends of branches in globose fashion in axils of leaves.The nodes often have pair of axillary spines. Flowers are small, greenish with male ones at the top while the female ones below the clusters and stem is greenish but often reddish with one-seeded capsule as fruit in Amaranthus spinosus which attains up to 80 ± 20cm in height whereas A. hybridus differ in absence of a pair of axillary spines, the stems are greenish or slightly pinkish which grows up to 100 ± 10cm in height. A. hybridus is more of a vegetable and has alternate phyllotaxi and narrow cuneate base. Fruits from both species are circumscissile capsules and their inflorescences are terminal racemes positioned at their axils with female perianth segments of five. Epidermal studies revealed amphistomatic stomata which is anisocytic  type for both species. The stomatal index for A. spinosus adaxial foliar epidermis is 20% and the abaxial 20% whereas for A. hybridus adaxial is 20% and abaxial foliar stomatal index of 20%. Anatomical studies revealed open vascular system, collenchyma dominating the hypodermis while parenchyma occupied the general cortex and pith regions. A. hybridus has more vascular bundles and trichomes, and wider pith than A. spinosus. Phytochemical studies showed the presence of tannins, saponins, alkaloids, and flavonoids are present in A. spinosus while alkaloids were absent only in A. hybridus. This may be the reason why A. spinosus is used more in tradomedicine than A.hybridus which served more as vegetable. Key Words: Morphology, Anatomy, Phytochemistry, Amaranthus, Amaranthaceae

scholarly journals Gut virome of mammals and birds reveals high genetic diversity of the family Microviridae

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Hao Wang ◽  
Yu Ling ◽  
Tongling Shan ◽  
Shixing Yang ◽  
Hui Xu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
High Genetic Diversity ◽  
The Family

“We Sleep with One Eye Open”: Exploring the Experiences of Churches in Rivers State, Nigeria

2019 ◽  
Vol 54 (8) ◽  
pp. 1262-1279 ◽  
Author(s):  
George C Nche ◽  
Chikodi Wachukwu ◽  
Chinyere T Nwaoga ◽  
Ekene M Mokwenye ◽  
Prince Agwu ◽  
...  
Keyword(s):  
Older People ◽  
Church Leaders ◽  
The State ◽  
High Rate ◽  
Narrative Approach ◽  
Armed Robbery ◽  
The Face ◽  
The Government ◽  
Negative Impacts ◽  
Rivers State

In instances of insecurity in many societies, churches “also” suffer. Yet there is a dearth of literature exploring the experiences of churches in connection with situations of insecurity. This study, therefore, explored the experiences of churches in the face of the high rate of insecurity in Rivers State, Nigeria. Information was elicited from 16 church leaders of different denominations in different communities in Rivers State. Using a descriptive narrative approach, the study found that churches’ experiences in some communities in the state are reflections of helplessness and despair due to the incidences of cultism, kidnapping, armed robbery, etc. Many churches in some of the embattled communities have been deserted or left with a few older people. This has had negative impacts on evangelism and the churches’ economy, with the clergy at the receiving end. The implications of findings for the government and churches are discussed.

Genetic diversity and phylogeny of the family Osteoglossidae by the nuclear 18S ribosomal RNA and implications for its conservation

2013 ◽  
Vol 51 ◽  
pp. 280-287 ◽  
Author(s):  
Xi-dong Mu ◽  
Dang-en Gu ◽  
Ye-xin Yang ◽  
Du Luo ◽  
Xu Meng ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ribosomal Rna ◽  
18S Ribosomal Rna ◽  
The Family

Photosynthetic characteristics of three species of the family Plantaginaceae growing on high and low tide coastal areas of the White Sea

2012 ◽  
Vol 2 (2) ◽  
pp. 71-79 ◽  
Author(s):  
Anatoly Kosobryukhov ◽  
Evgeniya Markovskaya ◽  
Liudmila Sergienko
Keyword(s):  
Electron Transport ◽  
Stomatal Conductance ◽  
Water Use Efficiency ◽  
Water Use ◽  
High Efficiency ◽  
White Sea ◽  
High Rate ◽  
The White Sea ◽  
The Family ◽  
Use Efficiency

CO2 gas exchange, transpiration, stomatal conductance, water use efficiency and chlorophyll content were investigated at the leaves of three species of the family Plantaginaceae: Plantago maritima L., Plantago subpolaris Andrejev and Plantago schrenkii C.Koch under natural conditions of the habitat on high and low tide areas of the White Sea’ coasts. The high rate of photosynthesis at saturating CO2 (PNmax) at P. maritima (85.0±4.8 μmol m-2 s-1), as compared to P. subpolaris and P. schrenkii (45.2± 7.5 and 36.9±3.2 μmol m-2 s-1) was caused by high activity of ribulose-1,5-bisphoshate carboxylase/oxygenase (RuBPCO), the rate of electron transport, the rate of triose phosphate utilization, TPU), as well as high efficiency of carboxylation. The rates of photosynthesis at ambient concentration of CO2 (PN) at P. maritima were 1.4 and 1.7 times higher compared to P. subpolaris and P. schrenkii. Plants of P. schrenkii are characterized by lower values of stomatal conductance and water use efficiency compared to P. maritima and P. subpolaris. In natural habitat, the limiting factor of CO2 assimilation P. subpolaris is the rate of photosynthetic electron transport, the activity of RuBPCO in P. schrenkii.

scholarly journals Characterization of a Novel Member of the Family Closteroviridae from Mentha spp.

2005 ◽  
Vol 95 (9) ◽  
pp. 1043-1048 ◽  
Author(s):  
Ioannis E. Tzanetakis ◽  
Joseph D. Postman ◽  
Robert R. Martin
Keyword(s):  
Genetic Diversity ◽  
Virus Genome ◽  
Double Stranded Rna ◽  
Atypical Symptoms ◽  
Molecular Tests ◽  
The Family ◽  
Nursery Plant ◽  
Transmission Studies ◽  
Genomic Regions

While characterizing the agents involved in symptomatology of a variegated mint, Mentha × gracilis ‘Variegata’, a nursery plant with atypical symptoms was examined. This plant, unlike ‘Variegata’, did not exhibit yellow vein banding symptoms but instead had distorted and crinkled leaves. Molecular tests for the three viruses found in ‘Variegata’ clones failed to detect any of these viruses in the plant. Double-stranded RNA was extracted and cloned, disclosing the presence of two unknown viruses. One of the viruses was a novel member of the family Closteroviridae. The complete nucleotide sequence of the virus, designated as Mint virus 1, has been obtained. A detection test was developed, and revealed the presence of the virus in several other mint clones and species. Genomic regions from three additional isolates were examined to investigate the genetic diversity of the virus. Genome and phylogenetic analysis placed Mint virus 1 in the genus Closterovirus and transmission studies have identified the mint aphid, Ovatus crataegarius, as a vector for this new member of the genus Closterovirus.

Gender Differences in Traditional Attitudes Toward Marriage and the Family

2000 ◽  
Vol 21 (4) ◽  
pp. 419-434 ◽  
Author(s):  
MOHAMMADREZA HOJAT ◽  
REZA SHAPURIAN ◽  
DANESH FOROUGHI ◽  
HABIB NAYERAHMADI ◽  
MITRA FARZANEH ◽  
...  
Keyword(s):  
United States ◽  
Marital Dissolution ◽  
The United States ◽  
Attitude Scale ◽  
High Rate ◽  
Male And Female ◽  
The Family ◽  
Female Immigrants ◽  
Attitudes Toward Marriage ◽  
American Society

This study compares Iranian male and female immigrants in the United States on their attitudes toward marriage and the family. Participants were 160 Iranians in the United States. A 10-item attitude scale measured the degree of traditional attitudes (a stand taken in the prevalent Iranian culture as opposed to that in the mainstream American society) toward premarital sex, marriage, and the family. Results showed Iranian men scored significantly higher than Iranian women on the traditional attitude scale ( p < .05, effect size estimate = .39). Gender difference remained significant after adjusting for participants' age. The attitudinal disparity between Iranian male and female immigrants observed in this study can provide an explanation for a high rate of marital dissolution among Iranians in the United States. Findings can also help in understanding some underlying issues that contribute to intra- and interpersonal tension among the immigrants with implications in marital and family therapy.

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