ORIGINAL_ARTICLE
MARPHOMETRICAL STUDIES OF SOME ANTENNAL SENSOR ORGANS OF EGYPION AND CARNIOLAN HONEYBEE WORKERS.
This study compared the ultrastructure of some sensor organs on the antennae of Egyptian, Apis mellifera lamarckii, bees to that of Carniolan, A. m. carnica, bees. Egyptian bees is the endemic bee of Egypt and is well adapted to the local conditions and pests of the region. Second stock was a large population of honeybees and is maintained commercially in Egypt. The following characteristics were compared: the antennal length; the number and the measurements of sensilla of placodea, trichodea and chaetica of the flagellomeres 1 to 8 of the antennae of workers of the two honeybee races was studied by scanning electron microscopy. There was a highly significant difference between the antennal length of Egyptian and Carniolan honeybee workers (P=0.0097) with means of 3.858 ± 0.162 mm. and 4.321 ± 0.076 mm. respectively. Statistically, the numbers and the measurements of sensor organs of the antennae of Egyptian and Carniolan honeybees did not deffer from one another in most flagellomers.
https://jppp.journals.ekb.eg/article_88014_8d987aba9e36d59c44283b1a7d54a19b.pdf
2014-11-01
959
972
10.21608/jppp.2014.88014
Honeybee
Apis mellifera lamarckii
A. m. carnica
antenna
flagellum
sensilla placodea
trichodea
chaetica
M.
Mahbob
mahbobent@yahoo.com
1
Faculty of Science, Assiut University, New Valley Branch, Egypt
AUTHOR
M.
Abdel Aziem
2
Apiculture Department, Plant Protection Research Institute, ARC, Dokki, Giza, Egypt
AUTHOR
ORIGINAL_ARTICLE
SPECIES DIVERSITY AND SEASONAL ABUNDANCE OF CERTAIN AQUATIC ARTHROPODS SURVEYED FROM SOME PONDS LOCATED AT THE EL-GHORIEB AREA ASSIUT, EGYPT.
The current study focused on certain aquatic arthropods extracted from some ponds located at El-Ghorieb area during two years starting from March, 2011. In the present study, twenty species of aquatic arthropods pertaining to six orders (i.e., Diptera, Hemiptera, Coleoptera, Odonata, Cladocera and Acari) were recorded from some water pools. All the aquatic species increase to enumerate through the spring season and the least numbers were recorded during winter. Autumn and summer were inbetween. The occurrence percentage of each species inside its own order was also calculated. The study showed that the highest proportion of mosquito species with an average ratio of 62.29 and the least was with Odonata with an average of 3.6.
https://jppp.journals.ekb.eg/article_88016_43a7de44c56e5c464dfeeb28ed88a3a3.pdf
2014-11-01
973
981
10.21608/jppp.2014.88016
Aquatic arthropods
Species diversity
seasonal abundance
El-Ghorieb ponds
T.
Abo-Elmaged
tnmn203@yahoo.com
1
Plant Protection Department, Fac. Agric,, Assiut University, Egypt
LEAD_AUTHOR
ORIGINAL_ARTICLE
RESISTANCE TO STRIPE RUST IN SOME EGYPTIAN WHEAT GERMPLASM
Stripe rust, caused by Puccinia striiformis f. sp. Tritici [Pst], is an important wheat disease that causes considerable yield losses in wheat growing areas worldwide. It is better to control the disease throughout the use of cultivars with durable resistance. This study to evaluate 20 Egyptian cultivars against stripe rust at both seedling and adult stages, at a rust hot spot location in Sakha Agriculture Research Station, Egypt, during the 2010/2011 and 2011/2012 growing seasons. Slow rusting resistance at adult plant stage was assessed through the determination of infection type (IT), disease severity (DS), relative area under disease progressive curve (rAUDPC), and coefficient of infection (CI). Results indicated that the among 20 cultivars tested, five cultivars showed resistance reaction i.e. Misr 1, Gemmeiza 10, Gemmeiza 11, Sids 13 and Sohag 3, while the remained tested cultivars showed susceptible reaction at seedling stage. On the other hand, at adult plant stage five Egyptian cultivars showed little or no infection, therefore it were selected as immune or resistant cultivars. i.e. Sakha 61, Gemmeiza 10, Benisweif 4, Benisweif 5, and Sohag 3, while the rest cultivars tested showed moderately resistance to moderately susceptible and susceptible reaction. The cultivars Giza 168, Sakha 94, and Gemmeiza 7 had the susceptible reaction at seedling stage and it were moderately resistant to moderately susceptible at adult stage. Consequently, these cultivars with low rAUDPC (7.14 to 14.28%) most probably could have slow rusting resistance. Results of mean comparison values of CI and rAUDPC indicated that Giza167, Gemmeiza 5, and Sids 1 exhibited the highest CI and rAUDPC. Correlation analysis of different parameters also showed highly strong relationship of CI with rAUDPC and disease severity (R2 = 0.92 and 0.94, respectively). Meanwhile, the thousand kernel and test weight decreased due to high rust infection, high significant difference could be detected among cultivars. As for 1000 kernel weight the highest value was recorded with Beniswief 5 (53.90g and 50.20g) during 2010/2011 and 2011/2012, respectively. Regarding the test weight Misr 1 was the least affected cultivar by the disease that reduced by 1.52 %, at first season while Beniswief 1 recorded 1.57% in the second season.
https://jppp.journals.ekb.eg/article_88017_92c0fc793ffef1cbc7ab7fa31df9ac45.pdf
2014-11-01
983
993
10.21608/jppp.2014.88017
Wheat
stripe rust
yellow rust
slow rusting
durable resistance
Egypt
A.
Shahin
a.a.shahin@hotmail.com
1
Wheat Disease Research Department, Plant Pathology Research Institute (PPRI), Agricultural Research Center (ARC), Egypt
LEAD_AUTHOR
ORIGINAL_ARTICLE
FIELD AND LABORATORY STUDIES ON THREE EGGPLANT CULTIVARS TO EVALUATE THEIR RELATIVE SUSCEPTIBILITY TO SOME PIERCING SUCKING PESTS WITH RELATION OF LEAF CONSTITUENTS
Field and laboratory studies were carried out to evaluate three eggplant cultivars, long black (Anan), white long (Soma) and spherical black (classic) for their relative susceptibility to spotted spider mite, Tetranychus urticae Koch, whitefly, Bemisia tabaci (Gennadius), aphid, Aphis gossypii Glover and Jassid, Empoasca lybica de-Berg infestation. The obtained results showed that spherical black cultivar was the most susceptible to spider mites, aphid and whitefly, while black cultivar was lowest level infestation by the tested sucking pests.Obtained data cleared that there were significant differences between eggplant cultivars and piercing sucking pests, which may be affected by plant leaf phytochemical constituents; total amino acids, total lipids, total carbohydrates, sodium, potassium, phosphorus, calcium, chloride and nitrogen, therefore, sodium, potassium, chloride, magnesium contents were negatively correlated with population density of different piercing sucking pests. On the other hand, total amino acids, lipids, carbohydrates, protein and nitrogen positively correlated with different piercing sucking pests.
https://jppp.journals.ekb.eg/article_88019_0498ff3851236b1863f10cb5e90ccb45.pdf
2014-11-01
995
1005
10.21608/jppp.2014.88019
H.
Azouz
1
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
AUTHOR
E.
Yassin
2
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
AUTHOR
Mariam,
El-Sanady
3
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
AUTHOR
Aziza,
Abou-Zaid
4
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
AUTHOR
ORIGINAL_ARTICLE
CONTROL THE GREEN PEACH APHID, Myzus persicae (SULZER) INFESTING CHRYSANTHEMUM PLANTS UNDER GREENHOUSE
Insecticides; Malathion, Vertimek, Chloropyrifos, Deltanete, Ekatin and Bifenthrin and two oils; Jojoba oil and Royal-oil at the recommended rates of application were evaluated for controlling the green peach aphid, Myzus persicae (Sulzer) infesting Chrysanthemum indicum L. cv. White wonder growing in pots under plastic greenhouse conditions in 2012 and 2013. Treatments were applied 2 times in 2012 and 3 times in 2013 seasons to induce a perfect control of the aphids and protect the plants for longer periods. Vertimek was the most effective insecticide, recording the highest reduction percentages in 2012 after 35 days and in 2013 after 41 days post-initial application (98.71 and 97.7%, respectively). In 2012, Jojoba oil was the least tested aphicides recording reduction percentages 91.5% after 35 days of application while in 2013 Royal oil was the least one representing with reduction percentages 90.1% after 41 days. All compounds were differed significantly than control and not exhibited any phytotoxicity on leaves and flowering blooms.
https://jppp.journals.ekb.eg/article_88021_3c7dda932a7c38d8d89cc948f675ca43.pdf
2014-11-01
1007
1013
10.21608/jppp.2014.88021
A.
Emam
1
Plant Protection Research Institute, Agric. Res. Center, Dokki, Giza, Egypt
AUTHOR
A.
Mansour.
2
Plant Protection Research Institute, Agric. Res. Center, Dokki, Giza, Egypt
AUTHOR
ORIGINAL_ARTICLE
DETERMINATION AND VALIDATION OF INORGANIC BROMIDE BY GAS CHROMATOGRAPHY IN SEVERAL FOODS
An analytical method for determination of inorganic bromide in cereals, herbs, fruits and vegetables had been validated. The comminuted samples are suspended in an acidified aqueous solution of propylene oxide, with bromide being simultaneously extracted. Organic bromide is converted to mixture of 1-bromo-2-propanol and 2-bromo-1-propanol and partitioned by ethyl acetate and then determined by GC-ECD without further cleanup, the analytical parameters of the method such as limit of quantification and linearity have been investigated. The limit of quantification is found to be 2 mg/kg for dry samples and 0.2mg/kg for fresh samples. The method showed to be linear up to 100 mg/kg. The average recoveries at different concentration levels on the fresh samples and dry samples ranged from 84 to113%. The reproducibility expressed as relative standard deviation was less than 12.8 % for dry samples and 11.6 % for fresh samples. The measurement uncertainty expressed as expanded uncertainity in terms of relative standard deviation at 95 % confidence level was found to be within the range ±33%
https://jppp.journals.ekb.eg/article_88022_21e23de3a76771168e68f5947d254455.pdf
2014-11-01
1015
1023
10.21608/jppp.2014.88022
validation
inorganic bromide
A.
Mahmoud
1
Central Lab. For Analysis of Pesticide Residues and Heavy Metals in Foods, Agricultural Research Center, Dokki, Giza, Egypt.
AUTHOR
R.
Gouda
2
Central Lab. For Analysis of Pesticide Residues and Heavy Metals in Foods, Agricultural Research Center, Dokki, Giza, Egypt.
AUTHOR
Lamia
Ryad
3
Central Lab. For Analysis of Pesticide Residues and Heavy Metals in Foods, Agricultural Research Center, Dokki, Giza, Egypt.
AUTHOR