scholarly journals Genetic Diversity of Diazotrophs Nodulating Pigeon Pea in Arid and Semi-Arid Zones of Haryana, India

2018 ◽  
Vol 7 (03) ◽  
pp. 3447-3467 ◽  
Author(s):  
Kuldeep Singh ◽  
Subha Dhull ◽  
Rajesh Gera
Keyword(s):  
Genetic Diversity ◽  
Pigeon Pea ◽  
Arid Zones ◽  
Semi Arid

scholarly journals Agro-Fruit-Forest Systems Based on Argan Tree in Morocco: A Review of Recent Results

2022 ◽  
Vol 12 ◽  
Author(s):  
Abdelghani Chakhchar ◽  
Imane Ben Salah ◽  
Youssef El Kharrassi ◽  
Abdelkarim Filali-Maltouf ◽  
Cherkaoui El Modafar ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Environmental Management ◽  
Agricultural Policy ◽  
Arid Zones ◽  
Anthropogenic Pressure ◽  
The Sustainable Development ◽  
Argan Tree ◽  
Powerful Means ◽  
Productive Systems ◽  
Semi Arid

The argan tree, Argania spinosa (L.) Skeels, is a horticultural forestry species characterized by its endemicity and adaptation to arid and semi-arid zones in the southwest of Morocco. Despite its limited geographical distribution, argan tree presents large genetic diversity, suggesting that improvement of argan is possible. This species plays important ecological, and socioeconomic roles in the sustainable development of the country. The integration of arganiculture into Moroccan agricultural policy has been implemented through a sector strategy, which is fully aligned with the conservation and regeneration of argan forest. A. spinosa is suitable for incorporation into different agroforestry productive systems under agro-fruit-forest model and its domestication will provide a powerful means of socio-economic and environmental management. Here, we provide an overview of the argan tree literature and highlight the specific aspects of argan stands, as agro-forest systems, with the aim of developing an adequate strategy of conservation and domestication of this species. We introduce promising programs and projects for argan plantations and arganiculture, which have been adopted to relieve anthropogenic pressure on the natural argan forest.

GENETIC DIVERSITY OF BROILER CHICKEN BRANDS RAISED IN ARID AND SEMI-ARID ZONES OF NORTHERN NIGERIA USING MITOCHONDRIAL DNA

2021 ◽  
Vol 5 (2) ◽  
pp. 456-461
Author(s):  
A. Y. Abdullahi ◽  
M. Nasir ◽  
A. G. Khalee ◽  
R. M. Ashiru ◽  
H. M. Zango ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mitochondrial Dna ◽  
Rural Areas ◽  
Dna Analysis ◽  
Haplotype Diversity ◽  
Climatic Conditions ◽  
Arid Zones ◽  
High Genetic Diversity ◽  
Hot Dry Season ◽  
Semi Arid

A sector of broiler production is growing very fast to meet the high demand of meat in Nigeria. However, high mortality rates among the broilers especially during the hot dry season in arid and semi-arid zones is worrisome. There is a need for molecular genetics study that could aid in management, conservation and sustainable exploitation of this species. To evaluate the genetic diversity of broilers raised in these regions, a total of forty-six broilers were randomly sampled from eight different brands (Agrited, Amo, Chi, Fol-hope, Obasanjo, Olam, Yammfy and Zatech) for mitochondrial DNA analysis. Four haplotypes were detected among all the samples used that belong to the four strains. The sequences of mitochondrial regions revealed high haplotype diversity (0.78600) and low nucleotide diversity (0.00286).  Lower genetic diversity observed may increase the chances of rapid disease infection and distribution during any disease outbreak. Introduction of new strains of broilers with high genetic diversity is highly recommended. Future study should be conducted on the performance of these strains during the extremely hot temperature period in arid and semi-arid zones of Nigeria. This is to provide reliable information for the sake of local broiler farmer’s benefit who invests largely on this sector. The study will also help the geneticists from these brands to develop a strain that could survive and perform excellently under severe climatic conditions of the rural areas of arid and semi-arid zones of Nigeria

Multivariate Analysis, Genetic Diversity and Phenotypic Correlation of Nineteen Exotic Groundnut Accessions

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
YPJ AMARASINGHE ◽  
G . WIJESINGHE ◽  
R W PUSHPAKUMARA
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Growth Parameters ◽  
Principal Component ◽  
Phenotypic Correlation ◽  
Clustering Method ◽  
Yield Parameters ◽  
Arachis Hypogaea L ◽  
Semi Arid ◽  
Number Of Branches

19 Groundnut ( Arachis hypogaea L. ) genotypes receiv ed from International Crops Research Institute for Semi Arid T ropics (ICRISA T) India w ere ev aluated in a non replicated trial and the characters w ere subjected to multiv ariate analysis to study the v ariability within the genotypes. The first 5 axes of the principal component analysis captured 78% of the total v ariability and identified yield parameters such as number of pods per plant, pod w eight per plant and growth parameters such as number of branches per plant, plant spread, and pod characteristics as the characters contributing most to total v ariation. Phenotypic correlation analysis rev ealed that the yield has positiv e correlation with the characters such as number of pods per plant and number of branches per plant. W ards clustering method has grouped the genotypes into 3 distinct clusters. The results can be applied in order to strengthen the breeding program

scholarly journals Using AFLP-RGA markers to assess genetic diversity among pigeon pea (Cajanus cajan) genotypes in relation to major diseases

2014 ◽  
Vol 28 (2) ◽  
pp. 198-205 ◽  
Author(s):  
Prakash G Pati ◽  
Subhojit Datta ◽  
Ikechukwu O Agbagwa ◽  
Indra Prakash Singh ◽  
Khela Ram Soren ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Cajanus Cajan ◽  
Pigeon Pea

Genetic Diversity Analysis of Salvadora Oleoides Decne: An Evergreen Dry Land Fruit Tree of Rajasthan, India

2021 ◽  
Author(s):  
Juleri M Upendra ◽  
Shari Nair ◽  
Satyawada R Rao ◽  
Harchand R Dagla
Keyword(s):  
Genetic Diversity ◽  
Random Amplified Polymorphic Dna ◽  
Splice Junction ◽  
Genetic Distances ◽  
Climatic Conditions ◽  
Fruit Tree ◽  
Group Method ◽  
Dry Land ◽  
Intron Splice ◽  
Semi Arid

Abstract Genetic diversity of Salvadora oleoides Decne is analyzed by cumulative data of 10 Random Amplified Polymorphic DNA (RAPD), 10 Inter Simple Sequence Repeats (ISSR) and 7 Intron Splice Junction (ISJ) markers. The plant is an evergreen fruit tree and well distributed in semi-arid and sub-humid climatic conditions of Rajasthan, India. RAPD, ISSR and ISJ primers accounted for 84.4%, 85.3%, 85.9% polymorphism. Average 0.23 PIC is accounted for RAPD, ISSR and ISJ primers. The genetic similarity ranged between 0.42-0.89. Analysis of molecular variance (AMOVA) revealed higher variation (73%) at intra-population than inter-population (27%) level. Genetic distances based on Un-weighted Pair Group Method with Arithmetic mean (UPGMA) dendrogram and Principal Coordinate Analysis (PCoA) is correlated with physical distances or climatic conditions of Salvadora oleoides Decne in a semi-arid and sub-humid environment of Rajasthan. The present investigation may help in the understanding of gene flow systems between physical distances and environmental heterogeneity of the populations for better management of Salvadora oleoides Decne in the region.

scholarly journals The demography of desert Australia

2008 ◽  
Vol 30 (1) ◽  
pp. 29 ◽  
Author(s):  
Dominic Brown ◽  
John Taylor ◽  
Martin Bell
Keyword(s):  
Economic Policy ◽  
Arid Zone ◽  
Policy Implications ◽  
Population Projections ◽  
Research Centre ◽  
Arid Zones ◽  
Demographic Information ◽  
The Impact ◽  
First Time ◽  
Semi Arid

In recent years, with the formation of organisations such as the Desert Knowledge Cooperative Research Centre, social science interest in the Australian desert has re-surfaced with a research emphasis that is focused on creating sustainable futures for the region. One consequence of this is a demand for detailed demographic information to allow an assessment of different quanta of need in social and economic policy, and for assessment of the impact of these in environmental policy. However, demographic analysis on human populations in the desert to date has attracted very little research attention. In this paper we begin to address this lack of analysis by focusing on the populations, both aboriginal and non-aboriginal, of the arid and semi-arid zones of Australia. We extend earlier analysis by including for the first time demographic information on the semi-arid as well as the arid zone to establish the spatial pattern of population growth within the whole desert area drawing attention to the resulting settlement structure as an outcome of prevailing social, cultural and economic conditions. By examining population structure and demographic components of population change we also present for the first time population projections for the semi-arid zone and, therefore, in combination with the arid zone, for the entire Australian desert. All of this provides a basis for considering social and economic policy implications and the nature of underlying processes that drive change in this region.

scholarly journals Advances in Agronomic Management for Ensuring Fodder Security in Semi Arid Zones of India- A Review

2018 ◽  
Vol 7 (2) ◽  
pp. 1912-1921
Author(s):  
Hanamant M. Halli ◽  
S.S. Rathore ◽  
N. Manjunatha ◽  
Vinod Kumar Wasnik
Keyword(s):  
Arid Zones ◽  
Agronomic Management ◽  
Semi Arid

scholarly journals Biochemical profile and bioactive potential of wild folk medicinal plants of Zygophyllaceae from Balochistan, Pakistan

2020 ◽  
Author(s):  
Alia Ahmed ◽  
Amjad Hameed ◽  
Shazia Saeed
Keyword(s):  
Medicinal Plants ◽  
Total Phenolic ◽  
Arid Zones ◽  
Standard Drug ◽  
Aerial Parts ◽  
Fruit Samples ◽  
Pharmaceutical Industries ◽  
Inhibitory Potential ◽  
Bioactive Potential ◽  
Semi Arid

AbstractRecent focus is on analysis of biological activities of extracts from plant species. Zygophyllaceae is exceedingly important angiosperm family with many taxa being used in folk medicines widely dispersed in arid and semi-arid zones of Balochistan, Pakistan. Only a small proportion of them have been scientifically analyzed and many species are nearly facing extinction. Therefore present investigation explores the biochemical and bioactive potential of fourteen folk medicinal plants usually used for treatments of different ailments. Fresh aerial parts of nine taxa and two fruit samples were collected from plants growing in arid and semi-arid zones of Balochistan and analyzed for enzymatic, non-enzymatic and other biochemical activities. Higher phytochemical activities were detected in the aerial parts. Superoxide dismutase was detected maximum in Fagonia indica, (184.7±5.17 units/g), ascorbate peroxidase in Tribulus longipetalus subsp. longipetalus (947.5±12.5 Units/g), catalase and peroxidase was higher in Peganum harmala (555.0±5.0 and 2597.8±0.4 units/g respectively). Maximum esterase and alpha amylase activity was found in Zygophyllum fabago (14.3±0.44 and 140±18.8 mg/g respectively). Flavonoid content was high in T. longipetalus subsp. longipetalus (666.1±49 μg/ml). The highest total phenolic content and tannin was revealed in F. olivieri (72125±425 and 37050±1900 μM/g. respectively). Highest value of ascorbic acid was depicted in F. bruguieri var. rechingeri (448±1.5 μg/g). Total soluble Proteins and reducing sugars were detected higher in P. harmala (372.3±54 and 5.9±0.1 mg/g respectively). Maximum total antioxidant capacity (TAC) was depicted in Z. simplex (16.9±0.01 μM/g). Pigment analysis exhibited the high value of lycopene and total carotenoids in T. terrestris (7.44±0.2 and 35.5±0.0 mg/g respectively). Chlorophyll a, b and total chlorophyll content was found maximum in T. longipetalus subsp. pterophorus (549.1±9.9, 154.3±10 and 703.4±20.2 ug/g respectively). All taxa exhibited anti-inflammatory activity as well as anti-diabetic inhibitory potential. Seed extracts of Zygophyllum eurypterum (96%) exhibited highest inhibitory potential, along with twelve other taxa of Zygophyllaceae indicated (96-76%) activity when compared with the standard drug diclofenac sodium (79%). Seeds of T. longipetalus subsp. longipetalus (85%) exhibited the highest anti-diabetic activity; other eleven taxa also exhibited inhibitory activity of α-amylase ranging from (85-69%) compared with Metformin (67%) standard drug. Phytochemical screening revealed that selected taxa proved to be the potential source of natural antioxidants and could further be explored for in-vivo studies and utilized in pharmaceutical industries as potent therapeutic agents validating their ethno-pharmacological uses.

scholarly journals The Effect of Formation Processes on The Frequency of Palaeolithic Cave Sites in Semi-Arid Zones: Insights From Kazakhstan

2021 ◽  
Author(s):  
Aristeidis Varis ◽  
Christopher Miller ◽  
Patrick Cuthbertson ◽  
Abay Namen ◽  
Zhaken Taimagambetov ◽  
...  
Keyword(s):  
Central Asia ◽  
Arid Zones ◽  
Arid Environments ◽  
Formation Processes ◽  
Cave Deposits ◽  
Central Asian ◽  
Cave Sediments ◽  
Analytical Potential ◽  
Sediment Cover ◽  
Semi Arid

Central Asian caves with Palaeolithic deposits are few but they provide a rich record of human fossils and cultural assemblages that has been used to model Late Pleistocene hominin dispersals. However, previous research has not yet systematically evaluated the formation processes that influence the frequency of Palaeolithic cave sites in the region. To address this deficiency, we combined field survey and micromorphological analyses in the piedmont zone of south Kazakhstan. Here we present our preliminary results focusing on selected sites of the Qaratau mountains. Sediment cover varies among the surveyed caves and loess-like sediments dominate the cave sequences. The preservation of cave deposits is influenced by reworking of cave sediments within the caves but also by the broader erosional processes that shape semi-arid landscapes. Ultimately, deposits of potentially Pleistocene age are scarce. Our study provides new data in the geoarchaeologically neglected region of Central Asia and demonstrates that micromorphology has great analytical potential even within the limitations of rigorous survey projects. We outline some of the processes that influence the formation and preservation of cave deposits inKazakhstan, as well as broader implications for the distribution of Palaeolithic cave sites in Central Asia and other semi-arid environments.

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