Citrus is Complicated 2.0 Genotypes Classification

Article title: Comparative use of InDel and SSR markers in deciphering the interspecific structure of cultivated citrus genetic diversity; a perspective for genetic association studies.

 

Journal name: Molecular Genetics and Genomics

 

Author names: A. García-Lor¹, F. Luro², L. Navarro¹ and P. Ollitrault^1,3

 

Affiliation: ¹ Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada (Valencia), Spain; ² Unité de recherche GEQA, Institut National de la Recherche Agronomique (INRA), 20230 San Giuliano, France; ³ International Center for of Agricultural Research for Development (CIRAD), Department BIOS, TGU AGAP, Avenue Agropolis, TA A-75/02. F-34398 Montpellier Cedex 5, France

 

Corresponding authors:

Patrick Ollitrault. International Center for of Agricultural Research for Development (CIRAD), Department BIOS, TGU AGAP, Avenue Agropolis, TA A-75/02. F-34398 Montpellier Cedex 5, France. Email:

patrick.ollitrault@cirad.fr
Luis Navarro. Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada (Valencia), Spain. Email: lnavarro@ivia.es

Citrus Scab

Pathogen :

[ fungus ] Elsinoe fawcettii

Symptoms :

Leaf & fruit –  young foliar lesions superficially resemble young citrus canker, may have a slight water soaked margin.  

As pustules develop, the small elevated pink spots become more defined and may form conical depressions nearby.  

When pustules mature, they become warty and crack.  

Scab pustules colour may progress to yellowish brown and eventually to a dirty grey.

Prevention and Control :

Citrus scab can be controlled using resistant cultivars, and by fungicide application.

   

Citrus is complicated

Citrus is a common term and genus of flowering plants in the rue family, Rutaceae.

The taxonomy of the genus is complex and the precise number of natural species is unclear, as many of the names species are clonally propagated hybrids. Some wild, true-breeding species are of hybrid species. Cultivated Citrus may be derived from as few as 4 ancestral species.

Citrus has been suggested to originated in S.E.Asia. Prior to human cultivation, it consisted of just few species : C. aurantifolia. C. maxima (柚), C. medica, C. reticulata (柑，橘), C. tifoliata / Poncirus trifolia (枳), C. australasica, C. australis, C. glauca, C. japonica / Fortunella japonica, C. halimii, C. indica, etc

Some popular hybrids and cutivars : Grapefruit, sweet orange, Buddha’s hand, blood orange, Clementine, ponkan, tangerine, lime, lemon, etc