خيارات البحث
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SUSCEPTIBILITY OF SOME MANGO VARIETIES TO THE BUD MITE ERIOPHYES MANGIFERAE (SAYED) AND MAL-FORMATION DISEASE AND THE RELATION OF MITE INFESTATION TO MALFORMATION DISEASE
2006
A.E.A. Mahgoob
In field study, Eleven mango varieties, (Mangiferae indica L.) at Sharkia, Ismailia, and Fayoum Governorates, were examined to estimate the population fluctuation of the bud mite Eriophyes mangiferae Sayed, their susceptibility to mite infestation, the relation between the mite infestation and chemical contents of mango buds and the correlation between the bud mite and malformation disease. The highest population occurred during Sept. to Jan. or Feb. and the lowest population was existed during Mar. to Jun. Temperature and relative humidity had no significant effect on the mite population. The highest level of mite infestation was recorded at Sharkia followed by Fayoum and Ismailia Governorates. Mango varieties were differed in their susceptibility to E. mangiferae infestation. Zebda, Taimour, Ewais and Arnaba were the most susceptible varieties, while Mabrouka, Company, Excellent Succari and White Succari were the least susceptible ones. On the other hand Mesk, Geolck and Alphonse varieties showed moderate susceptibility to mite infestation. Buds of some high susceptible varieties possessed a lower values of total carbohydrates and total soluble sugars than some moderate or susceptible varieties to mite infestation. Phenol contents recorded a higher levels in the most of susceptible varieties while a lower levels were found in the most of moderate and low susceptible varieties. The total soluble proteins and amino acids recorded a higher values in some susceptible varieties. The susceptible characteristic was positively correlated with total soluble proteins and amino acids while negatively correlated with the total carbohydrates and total soluble sugars. However the phenol content showed no clear trend. Obtained results also revealed that mango varieties had varying degrees of floral malformation, Company, Alphonse and Geolck were the most susceptible varieties, while Zebda var. was the most resistant one. Statistical analysis showed a negative correlation between the eriophid bud mite and the incidence of malformation disease. Zebda var. harboured the highest number of mites but exhibited the lowest percentages of malformation, whereas the opposite trend was observed with company var
اظهر المزيد [+] اقل [-]Response of fenugreek, Trigonella foenum graecum L. plant to foliar application of brassinosteroid and chelated iron
2002
Farahat, M.M. (National Research Center, Cairo (Egypt). Botany Dept.)
Effect of the growth retardant PP333 on growth development, yield and fruit quality of, Picual olive trees
2002
Abou-Rawash, M. | Montasser, A. | El-Wakeel, H. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture) | Nageib, M. | Zinhoum, E.
Effect of benzyladenine treatment on chemical composition and salt tolerance of some maize inbreds under salt stress
2001
Shadi, A.I. | Sarwat, M.I. | Tag-El-Din, M.A. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture) | Abou-Deif, M.H.
ffect of irrigation intervals on the growth and active ingredients of Rosmarinus officinalis L. plants
2001
Kandeel, A.M. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)
ariation in herbage yield, essential oil yield and oil comosition of Sweet basil, Ocimum basilicum L. var. Grande verde grown organically in a newly reclaimed land in Egypt
2001
El-Gendy, S.A. | Hosni, A.M. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)Ahmed, S.S. | Omer, E.A. | Sabri, R.M.
esponse of Canary grass, Phalaria canariensis L. to kinetin foliar application and cutting management under saline conditons at Wadi Suder [Egypt]
2000
El-Houssini, A.A. (Ministry of Agriculture, Cairo (Egypt). Desert Research Center)
ffect of foliar application with some micronutrients on Anna apple trees. 1.-leaf mineral content
2000
Awad, S.M. (Nuclear Research Center, Cairo (Egypt). Plant Research Dept.)El-Gazzar, A.A. | El-Wakeel, H.F.
ffect of foliar application with some micronutrients on Anna apple trees. 2.-yield and fruit quality
2000
Awad, S.M. (Nuclear Research Center, Cairo (Egypt). Plant Research Dept.)El-Gazzar, A.A. | El-Wakeel, H.F.
evelopment and improvement of some plant associations at the North Western cost of Egypt. 3.-effect of interaction between Acacia shrubs age and location
2000
NourEl-Din, N.A. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)El-Hakeem, M.S. | Abd-Alla, S.O.M.