Genetic Assessment of Some Egyptian Cultivated Citrus and its Relatives using Retrotransposons and Microsatellite

Amar, Mohamed Hamdy

doi:10.21608/ejoh.2019.17421.1117

Cited by 4 publications

(1 citation statement)

References 37 publications

(81 reference statements)

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“…Natural populations of Citrus gene pool detected due to natural pollination which ensures the assumption that this area might be the center of origin of several Citrus species in Egypt. Many Citrus species, their cultivars and artificial hybrids are found to have originated in the Qalubia governorate (Bhattacharya andDutta, 1956 andAmar, 2019). Citrus is the most important fruit crop of Egypt for exportation and the cultivated area is 456082 feddan (Ministry of Agriculture Statics, 2019).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity of Some Citrus (L) Genotypes As Revealed By Meiosis

EL-Gioushy

2022

Annals of Agricultural Science, Moshtohor

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The Delta region especially in Qalubia governorate of Egypt is reported to be the new origin place and rich in diversity of Citrus (L.) species, where some species of Citrus appeared in their natural habitat. To have comprehensive information about the extent of genetic variability and the occurrence of cryptic genomic hybridity between and within various Citrus species, a combined approach involving cytogenetical approaches was adopted in the present study. Cytogenetic approaches are applied to five parents and their four crosses. Male meiotic studies showed a gametic chromosome number of n = 9, without any evidence of numerical variations. Bivalents outnumbered all other types of associations in pollen mother cells (PMCs) analyzed at diplotene, diakinesis and metaphase I. Univalents were frequently encountered in nine genotypes presently studied, though their presence appropriately did not influence the distributional pattern of the chromosomes at anaphases I and II.

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Section: Introductionmentioning

confidence: 99%

Genetic Diversity of Some Citrus (L) Genotypes As Revealed By Meiosis

EL-Gioushy

2022

Annals of Agricultural Science, Moshtohor

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Analyzing Bioactive Compounds in Essential Oil of Citrus maxima and Citrus sinensis Peel

Zareiyan

Khajehsharifi

2021

Journal of Essential Oil Bearing Plants

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Relationships between current climate and deforestation on citrus productivity in Northeastern Pará (Eastern Amazon)

Dias,

Souza

2024

Rev. Bras. Geog. Fis.

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This study analyzed the temporal and spatial patterns of the precipitation (PRP) and maximum temperature (TMAX) time series of 37 municipalities proportionally distributed in the northeastern part of Pará (Eastern Amazon), from 1981 to 2018 (37 years). Environmental data on citrus productivity-PROD (oranges and lime) (IBGE), evapotranspiration (ET) and deforestation (PRODES) were used for the last 15 years to identify the impacts of climate change. The non-parametric approach, specifically the Mann-Kendall (MK) test and delta variation in the period 1989-2003 and 2004-2018 (15 years), were applied to estimate annual and seasonal trends and detect variations after using heatmap and boxplots. To compose the climate change study, Principal Component Analysis (PCA) was applied to environmental variables and Principal Component Regression (PCR) was used to test the hypothesis. The results showed an increasing positive trend in the annual and seasonal TMAX time series over 37 years, with the most significant trends in the dry season. The trend results in PRP, on the other hand, showed regions with both negative and positive trend significance. On annual and seasonal scales, regions such as R5 in northeastern Pará showed positive trends. On the other hand, negative trends of decreasing PRP were observed in the coastal areas of Pará (R1 and R3). Based on PCA and PCR results, deforestation data are associated with higher maximum temperatures and orange productivity follows correlated with PRP and ET. In contrast, PRP and ET are considered limiting factors for lime productivity.

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Genetic Assessment of Some Egyptian Cultivated Citrus and its Relatives using Retrotransposons and Microsatellite

Cited by 4 publications

References 37 publications

Genetic Diversity of Some Citrus (L) Genotypes As Revealed By Meiosis

Genetic Diversity of Some Citrus (L) Genotypes As Revealed By Meiosis

Analyzing Bioactive Compounds in Essential Oil of Citrus maxima and Citrus sinensis Peel

Relationships between current climate and deforestation on citrus productivity in Northeastern Pará (Eastern Amazon)

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