Archive | December 2015

Species diversity of adult odonata in selected areas of Lanao Del Sur, Philippines – JBES

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  • Fathma Aliah Dimapinto1, Olga M. Nuñeza1*, Reagan Joseph T. Villanueva2
  1. Department of Biological Sciences, Mindanao State University – Iligan Institute of Technology, Iligan City, 9200, Philippines
  2. Forestal Healing Homes and Therapeutic Milieu, Forestal Road, Cabantian, Davao City, 8000 Philippines
Odonata (dragonfly and damselfly) plays an important role in the ecosystem.It is considered an indicator group in determining fluvial habitat status.Field work in selected areas in Lanao del Sur was conducted to determine the Odonato fauna present in the area.Adult Odonata samples were collected using sweep netting and hand-picking methods from four sampling sites.Biodiversity indices, similarity index, and canonical correspondence analysis were determined using Paleontological Statistics Software Package (PAST) version 2.17c. Twenty-one species (10 damselflies and 11 dragonflies) were documented with relatively low endemism of 42.86%.
 Odonata_kiil_mooni_kupral_estonia
High relative abundance of37.28% was observed in site 4. Sites 1 and 3 were observed to have high species diversity while sites 2 and 4 had moderate species diversity. There was a more or less even species distribution in the areas sampled. Dominance of Pseudagrion pilidorsum pilidorsum was recorded in Marawi City. Canonical correspondence analysis showed that environmental factors such as elevation, air temperature and relative humidity affect the abundance of species. It appears that human-induced activities limit the occurrence and abundance of the Odonata, especially the endemic species. This articles originally published at: Volume 6, Number 5, May 2015 – JBES

 

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Publication Name: International Network For Natural Sciences (INNSPUB)

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Morphological and physiological attributes associated to drought tolerance of Ethiopian durum wheat genotypes under water deficit condition

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  • Ashinie Bogale1*, Kindie Tesfaye2, Tilahun Geleto3
  1. 1,3Oromia Agricultural Research Institute, PO Box 312 code 1250, Addis Ababa, Ethiopia.
  2. 2Haramaya University, Department of Plant Sciences, PO Box 138, Dire Dawa, Ethiopia.

Abstract

The experiment was conducted to assess the differential morpho physiological response to stimulated water deficit and to determine the relationship between some of these morphological and physiological traits and yield components of eighteen durum wheat genotypes grown in pots under lathhouse condition. Water deficit significantly affected gas exchange and chlorophyll fluorescence parameters. It reduced the net photosynthesis rate (Pn), transpiration rate (E) and stomatal conductance (gs) measured both at anthesis and grain-filling stages. Similarly, the value of initial fluorescence (Fo) was increased while variable fluorescence (Fv), maximum fluorescence (Fm) and optimum quantum yield fluorescence (Fv/Fm) were decreased under water deficit. RWC of the leaves was decreased by 36.7% while SLA increased by 12.6% due to moisture stress relative to the well-watered control. No significant correlations were found between chlorophyll fluorescence parameters and grain yield under water deficit condition. Similarly, no significant correlations were found between leaf gas exchange parameters and grain yield. On the other hand, peduncle length and excursion were positively correlated with grain yield while negatively correlated with drought susceptibility index under water deficit condition. Leaf posture and rolling had also a profound effect on grain yield and other attributes. Erect-leaved genotypes had more grain yield, HI, kernel numbers per spikelet and grain-filling rate but had lower kernel weight than droopy leaved. Similarly, genotypes exhibited strong leaf rolling under water deficit condition had more grain yield, kernel numbers per spike and water use efficiency. The genetic variability found for leaf posture, leaf rolling, peduncle length and excursion among the Ethiopian durum wheat genotypes suggests the opportunity for selection superior and adapted genotype in water-limited environments. These can be achieved by integrating these morphological traits as indirect selection in conjunction with other yield components. Get the full articles at: http://www.innspub.net/volume-1-number-2-april-2011-2/

Morphological and physiological attributes associated to drought tolerance of Ethiopian durum wheat genotypes under water deficit condition

Published Journals: Journal of Biodiversity and Environmental Sciences (JBES)

Composition of farmyard chicken, production practices and season effect on the reproductive parameters of local hens in the regions of Eastern Chad – IJAAR

farmyard chicken
  • Mopate Logtene Youssouf1*, Zeuh Vounparet2, Issa Adoum Youssouf3
  1. Zootechnical and Veterinary Research Laboratory, NDjamena, P.O.Box. 433, Chad
  2. Livestock Polytechnic Institute of Moussoro, Moussoro, Chad
  3. University Institute of Sciences and Techniques, Abeche, Chad
This study was about the composition of the farmyard chicken, to evaluate the production practices and the reproduction performance of the hens of the Eastern Chad .The transversal retrospective survey covered 113 villages chosen at random in 12 Departments of three (3) regions (Wadi Fira, Ouaddai and Salamat). It was about 732 chicken farms with a total number of 18197 chickens. The average number per chicken farm was 25±17 chickens. The females were 62% of the total number and the males 38%. The sex ratio was 4.7 in favor of the females.
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The henhouses with a roof were the majority (95%) among the ones with no roof (5%). Many producers (91%) distributed the cereal ban in some troughs for the chicks and 98% of the grains were thrown straight on the floor for the young chickens and the adult ones. The average total number of the hens clutch per year was 3.6±0.7 and the average total number of eggs per hen clutch was 11.7±1.7. The yearly average production was 41±9 eggs;  the average hatching rate was 86.6% and the average survival rate when chicks were two months was 60%. According to the seasons, the low reproduction performances were noted during the dry hot season (P<0.05). The loss was important after the weaning. Some practices aiming to reduce that loss would permit the numerical increase of the numbers. The characterization of the initial state of the hens production allows to evaluate the  impact of the improvement and innovation practices which were introduced in the concerned regions.

Source of Articles: Volume 4, Number 1, January 2014 – IJAAR

Journal Name: International Journal of Agronomy and Agricultural Research (IJAAR)

Publication Name: International Network For Natural Sciences (INNSPUB)

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Management of root-knot nematode (Meloidogyne spp.) on okra (Abelmoschus esculuntus (L.) Moench) with aqueous sesame seed extract – IJAAR @Ghana

Okra Picture Blog
  • Frederick Kankam, Elias Nortaa Kunedeb Sowley*, Mohammed Alhassan
  1. Department of Agronomy, Faculty of Agriculture, University for Development Studies, Tamale, Ghana

Abstract

Okra (Abelmoschus esculuntus (L.) Moench) is a popular vegetable in Ghana but its production is limited by nematode infestation of soils. Pot experiments were carried out in a plant house at the Nyankpala campus of the University for Development Studies (UDS), Tamale to assess the effect of aqueous sesame seed extract on rootknot nematodes (Meloidogyne spp.) of okra. 
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The experiment was laid out in a completely randomized design with each of the four treatments replicated four times.Treatments consisted of three levels of sesame seed extract (10, 20 and 30 g/50ml) per pot and a control (0 g/50ml).All pots were inoculated with 1000 root-knot nematode eggs a week before the application of the treatments. Data collected included plant height, number of leaves, stem girth, fruit weight, fresh root weight, number of fruits, nematode eggs per 50 g of fresh soil and root galling index.

The results showed that aqueous extract of S. indicum at 30 g/50 ml (w/v) suppressed root-knot nematodes better than the control. Similarly, okra plants treated with S. indicum had the lowest infection index (root gall). There were significant differences (P<0.05) among the treatment means for number of fruits and fruit weight of okra between aqueous sesame seed extract at 30 g/50 ml and the control. Yield of okra can be enhanced and nematode population reduced through the application of sesame seed extract preferably at 30 g/50ml
 

 

Source of Articles: Volume 6, Number 4, April 2015 – IJAAR

Journal Name: International Journal of Agronomy and Agricultural Research (IJAAR)

Publication Name: International Network For Natural Sciences (INNSPUB)

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Investigation of environmental effective factors to distribution of Salvia officinalis (case study: Ghohroud watershed in Kashan, Iran)

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Salvia officinalis

  • Mojtaba Akhavan Armaki
  1. Young Researchers and Elite club, Karaj Branch, Islamic Azad University, Karaj, Iran

Abstract

This research aims to study the existing relationships between the phytosociology characteristics of Salvia officinalis and environmental factors in order to find the most important factors governing the development of the species in middle Ghohroud rangelands, Iran. Subsequent to indicating the study region, the required flora and environmental data were collected by field survey. Continue reading