The present study was carried out during two successive growing seasons 2014 and 2015 in a private orchard located at Cairo-Alexandria desert road, 64 km from Cairo, to evaluate the efficiency of pollinator on productivity and quality attributes of eight olive cultivars, namely Aggizi, Dolce, Kalamata, Maraki, Coratina, koroneiki, Picual and Manzanillo. Ten year old olive trees, grown in sandy soil, planted at 6 X 3 meters apart and irrigated by the drip irrigation system were used for this investigation. The results revealed that, there were differences in the onset and duration of flowering among the studied cultivars in both seasons. The earliest cultivar in flowering was Aggizi, while the latest cultivar in this respect was Kalamata Cv. in both seasons. Regarding flowering duration, it was observed that the studied cultivars overlapped in their blooming period where it is varied between 15 and 20 days in 2014 and 14-18 days in 2015. The highest perfect flower percentage was observed in Dolce and Coratina Cvs. With respect to self-incompatibility index, Aggizi, Dolce, Maraki and Koroneiki were self-compatible. Then, Picual and Coratina Cvs. recorded partially self-incompatible, whereas, Kalamata and Manzanillo Cvs. recorded higher degree of selfincompatibility,Cross pollination induced the best results with regard to fruit set %, and fruit weight and oil content in most olive cultivars. It can be recommended that, the suitable pollinator for each cultivar were as follows: Maraki and Aggizi were good pollinators for each other, Koroneiki for Dolce, Manzanillo and Picual. Finally, Dolce was a good pollinator for Kalamata, Coratina and Koroneiki.
In this study twenty six RAPD primers and six ISSR primers were used to assess the genetic diversity among seven pecan genotypes cultivated in Egypt. Using the RAPD and ISSR analyses, 156 out of 276 and 30 out of 59 alleles, respectively, were detected as polymorphic markers among the seven pecan genotypes. The pecan genotypes were characterized by 59 genotypespecific markers i.e 45 for RAPD and 14 for ISSR that would be considered as useful markers for pecan genotypes. Eleven markers distinguished the Grazona genotype, five markers for the Cheyenne genotype and one marker for each of Desirable genotype, Mahan and Moneymaker.
The current study has been carried out through two successive seasons (2013 and 2014) on 12 years old Manzanillo olive trees in a private orchard located 50 km of Cairo-Alexandria road in the north west of Egypt. The main objective of this study was to convert olive mill wastes [pomace and olive vegetable water (OVW)] to compost tea (CT) and studying their effect on growth and productivity of olive trees. Compost tea (CT) was prepared by soaking the mixture of compost and olive pomace (2:1) in either water or the combination of water with olive vegetable water at different rates (25% or 50%). Four microorganisms (Serratia marcescens, Pseudomonas fluorescens, Phanerochate chrysosporium and Trichoderma virdi) were used in preparing compost tea. Data exerted that the treatment with CT + microorganisms gave the highest shoot length, number of leaves, fruit diameter, flesh/fruit weight. While, using the mixture of compost tea (50%) and olive vegetable water (50%) and incubated with microorganisms recorded the highest leaf area, flowering density, perfect flower (%), fruit set (%), yield, olive oil content, leaf nitrogen and potassium content as well as the highest net profit. Thus, it could be recommended, under the same conditions of this study, to use converted olive mill wastes to compost tea (CT) at the rate of 50% +50% olive vegetable water (OVW) + microorganisms to increase the productivity of Manzanillo olive trees and the net income, which in turn reduces the amount of fertilizer and environmental pollution caused by these wastes.
The present investigation was conducted during the two seasons , 2013 and 2014 to assess the effect of foliar application of garlic oil (3%), olive oil (3%), jasmine oil (0.3%) as a natural oils and hydrogen cyanamide at 1.5% (Hydrogen cynamide), alone or in combinations, on the percentage and date of buds emergence, vegetative growth, fruit quality and yield of Sultani fig cultivar grown under Sohag Governorate conditions. All sprayed treatments significantly improved vegetative growth, fruit quality and yield. The combination of olive oil and hydrogen cyanamide gave the highest values of the studied traits, earliness of the buds emergence and its improved percentage, enhanced vegetative growth and the number of fruits/tree. It also led to advancement of harvesting date, reduced immature fruit %, promoting yield and fruit quality, that led to achieve high profit compared to other treatments and the control (untreated).
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