Susceptibility of some date to infestation by Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae) | ||||
| Egyptian International Journal of Palms | ||||
| Volume 1, Issue 1, January 2021, Page 57-61 PDF (311.49 K) | ||||
| Document Type: Researches | ||||
| DOI: 10.21608/esjp.2021.233538 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mohamed Fouad1; Adel Gharib1; Asmaa Mahmoud2 | ||||
| 1Plant Protection Dept., Agric., Minia Univ., Minia, Egypt | ||||
| 2Plant Protection Dept., Agric., Minia Univ., Minia, Egypt. | ||||
| Abstract | ||||
| The susceptibility of some date cultivars namely: (Sewi, Bartamouda, Malakabi, Sakkouti and Gondeila) to infestation with Oryzae philus surinamensis (L.) was studied at 25˚C and 70±5% R.H. Some biological aspects of this pest and loss in date weight were recorded of each variety. Moreover, correlation between fruit weight as well as chemical components and the susceptibility index of the tested cultivars were investigated. Results indicated that the two cultivars Gondeila Gondeila Gondeila and SewiSewiSewi were the least susceptible to infestation with the pest as shown by the longest developmental period, the lowest number of adult emergence and loss in date weight. Also,the least values of susceptibility index of these cultivars were observed. The SakkoutiSakkoutiSakkouti and BartamoudaBartamoudaBartamoudaBartamouda cultivars were more susceptible to infestation by O. suriamensis. Average fruit weight (as physical character) is positively correlated with the susceptibility index. While, the chemical components (such as Ash %, Moisture content % and Total sugars) were negatively correlated with the susceptibility index of the tested date cultivars. | ||||
| Keywords | ||||
| Date palm; Phoenix dactylifera L; Oryzaephilus surinamensis L | ||||
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