IJEAB Journal

Screening of Guava genotypes to natural infestation of fruit flies (Diptera:Tephritidae) in River Nile, Sennar and North Kordofan States, Sudan Abdelaziz E. Gesmallah, Mohammed H. Mekki, Igbal A. Abdelatief, Ali E. El Jack, Ali O. Ali The infesting species and their infestation indices of fruit flies were determined for guava genotypes (Psidium guajava L.),grown in River Nile, Sennar and North Kordofan States during the period from June to August 2010 .Twenty genotypes were selected from each state to be evaluated ,where ten mature fruits from each genotypes were harvested randomly from insecticide unsprayed trees. Fruits were brought to the laboratory and placed in individual plastic vials containing sand at the bottom to obtain the pupae. Infestation indices were estimated by means of total number of pupae/fruit. Pupal viability was then calculated based on the percentage of pupae resulted in fly emergence. Data was analyzed using analysis of varia...

Indirect selection for resistance to Alectra vogelii (benth) infestation in cowpea (Vignaunguiculata (L) walp) Mbwando. A., Tembo. L., Lungu D. M, Tryphone G. M Alectra vogelii (benth) is a parasitic weed which causes significant yield reductions in cowpeas (VignaunguiculataWalp) in most of the sub-Saharan African countries. The objective of this study was to establish the effect of Alectra vogelii infestation on yield components of cowpea and the prospects of utilizing these components for indirect select to A. vogelii in resistance breeding. Seven genotypes of cowpea were crossed in all possible combinations without reciprocals and their 21 F2 progeny including parents were evaluated for reaction to Alectra vogelii infection at two locations, Ilonga and Hombolo. The experiments were laid using a Randomized Complete Block Design with three replications. Significant (P < 0.001) genotypic responses to Alectra emergency and infestation were found. A significance nega...

Studies on the Antioxidant Properties of Various extracts of Hippophae rhamnoide M. Amin Mir, S. S. Sawhney, Jigmat Stanzin, Manmohan Singh Jassal Sea Buckthorn (Hippophae rhamnoides) a spiny shrub native to Ladakh Region of Jammu and Kashmir, have been found to posses so many medicinal properties from times immoral. From this point of view the antioxidant property of the plant fruit extracts have been analysed by DPPH method. Various plant extracts viz, fruit, leaf and root have been analysed for the antioxidant power determination in which fruit extracts showed highest free radical scavenging activity followed by leaf and root extracts. Among the solvents which have been used, more polar solvents showed highest antioxidant activity than the less polar solvent extracts. The IC50 value of various plant extracts as determined have been found to be 40 for DCM extract of fruit, 38 for Methanolic extract of fruit and 30 for the water extract of fruit. Similarly the leaf...

Evaluation of Salinity Stress on Marigold’s Growth with Bacteria Inoculation Abedini Tina, Moradi Pezhman, Zeinab Deris This study was performed to Evaluation of salinity stress on marigold’s growth with Bacteria inoculation with afactorial experimental design and 3 replications. First factor was bacteria (inoculated and no inoculated) and second factor was salinity stress (control, 2, 4 and 8dS/m). After the experiment, some morphological characters and morphological of marigold were evaluated such as height, yield of fresh and dried flowers, number of flowers per plant, grain yield, petals, seed weight. Totally, it was founded that with increased stress levels from 0 to 8dS, the height, fresh yield of flowers, yield of flower dry weight, number of flowers per plant, grain yield, petals and seed weight, showed 43, 60, 56, 17, 64, 15 and 30percent of reduction, respectively. Also, it was determined that the using of bacteria can reduce the effects of stress on marigold...

Studying the tendency of citizens to participate in the protection and development of land scape in Tehran Shadi Maleki, Abbas Mafi, Seyedeh Mahsa Hosseini Today, as an essential part and parcel of urban landscape that they play a major role in metabolism and create a lack of serious damage to urban life. This study performed to investigate the willingness of citizens to participate in activities to protect and develop landscapeof Tehran district 4. The research was descriptive and correlation method that is used for collecting information. The statistical population consisted of district 4 of Tehran. The sample size was determined 230 by using Cochrane method. A questionnaire was used to collect data. According to the research, 63.04 percent of citizens showed participation in a high level. Among the variables investigated how citizen participation in conservation and development of landscape, effective strategies to motivate citizens to participate,the reasons for la...

Modelling the impact of climate change on cereal yield in Morocco Faiz Mourad, Laamari Abdelali, Lakhyar Zouhair To assess the impact of climate change different studies were conducted in several regions of Morocco. The assessment of climate change and its impacts involves the simulation of a range of different socio-economic and physical processes. Some of these processes are well known such temperature, rainfall, storms, etc.., others not. Hence for each modeling step researchers need to consider what is known, what is not known, and how climate change can be expressed.This paper is a contribution to research on climate change impact on cereal yield in the last 50 years. The application of the multiple linear regression model to a set of time series of yield, rainfall, temperature and storm has generated significant coefficients that can explain the relation between yield and the three climate variables. The model output confirms the results of the previous studies...