Correlation of isoenzyme polymorphism and Bayoud-disease resistance in date palm cultivars and progeny

Bendiab, K.; Baaziz, M.; Brakez, Zahra; Sedra, M.H.

doi:10.1007/bf00022196

Cited by 44 publications

(22 citation statements)

References 21 publications

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“…Morphological, isozyme and molecular data of date palm cultivars gave different results (Elhoumaizi et al 1993, Bendiab et al 1993, Sedra et al 1998.…”

Section: Discussionmentioning

confidence: 99%

Phenotypic diversity of date palm cultivars (Phoenix dactylifera L.) from Algeria

et al. 2016

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The aim of this work is to evaluate the phenotypic diversity of date palm (Phoenix dactylifera L.). This study shows that Biskra region has an interesting biodiversity. This latest was conducted during the growing palm groves since 3 years (2010, 2011 and 2012) in Biskra, on 89 date palm varieties, to identify their distinctive phenotypic characteristics. Seventeen physical parameters have been examined, including 4 relative to vegetative growth, and 13 to the fruits at the date parameters stage. The main components analysis was used to identify the differences and similarities between the parameters studied. The principal component analysis showed that morphological characters for fruits should be used for identifications and descriptions of date palm cultivars. The results revealed a wide variation for different degrees of significance between the 89 cultivars for most studied traits, and showed the superiority of the fruiting characteristics over the vegetative, the former included: Fruit weight 0.851 and length 0.746, flesh weight 0.865, the coefficient of fruit length/width 0.754 and the weight coefficient flesh/seed 0.675. These features had significant representation, as they helped significantly in finding 18 well identified varieties. The results analysis showed three homogeneous groups varieties sharing some traits, the convergence rate is different from one class to another within the same group. This study allowed us to highlight the most discriminating characters that can be used for further studies of diversity. KEYWORDS:Cultivars, date palm, identification, Algeria, phenotypic. RESUMENEl objetivo de este trabajo es evaluar la diversidad fenotípica de la palmera datilera (Phoenix dactylifera L.). Nuestro estudio muestra que la región de Biskra cuenta con una interesante biodiversidad. Este estudio se llevó a cabo durante 3 años de crecimiento (2010, 2011 y 2012) en Biskra, para 89 variedades de palmera datilera, para identificar sus características fenotípicas distintivas. Se analizaron 17 parámetros físicos, 4 de ellos relacionados al crecimiento vegetativo y 13 durante la etapa de fruto. Se utilizó el análisis de componentes principales para identificar las diferencias y similitudes entre los parámetros estudiados. El análisis de componentes principales mostró que los caracteres morfológicos de las frutas deben ser utilizados para identificaciones y descripciones de variedades de palmera datilera. Los resultados revelaron una amplia variación para diferentes grados de importancia entre los 89 cultivares para los rasgos más estudiados, y mostraron la superioridad de las características de fructificación frente a los de vegetación para distinguir las variedades. Estos resultados incluían: peso del fruto 0,851, longitud del fruto 0,746, peso de la pulpa del fruto 0,865, coeficiente longitud/ancho del fruto 0,754 y coeficiente peso pulpa/semilla 0,675. tienen representación significativa para diferenciar 18 variedades. Los resultados del análisis estadístico mostraron que hay tres grupos ho...

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“…Morphological, isozyme and molecular data of date palm cultivars gave different results (Elhoumaizi et al 1993, Bendiab et al 1993, Sedra et al 1998.…”

Section: Discussionmentioning

confidence: 99%

Phenotypic diversity of date palm cultivars (Phoenix dactylifera L.) from Algeria

et al. 2016

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“…Isozymes represent biochemical markers which are successfully used as a possible alternative or complementary method for characterization of crop plant cultivars (Cardy and Kannenberg 1982;Torres and Tisserat 1980) The use of biochemical methods eliminates the environmental influence; however, their usefulness is limited due to their inability to detect low levels of variation. Earlier isoenzyme marker analysis proved useful in identification of date palm cultivars (Baaziz and Saaidi 1988;Bendiab et al 1993). However, they provide limited number of informative markers and give no direct assessment of the genomic variation.…”

Section: Biochemical and Molecular Characterizationmentioning

confidence: 99%

“…Expansion in rainfed agriculture and irrigation schemes has been accompanied by changes in the vegetation complexes in rangeland and forest areas and by changing from small-scale agriculture to large-scale modern agriculture. Moreover, biotic factors such as pests and diseases can attack date palms resulting in negative impacts on the genetic variability within species (Bendiab et al 1993).…”

Section: Threatening Factorsmentioning

confidence: 99%

In Vitro Conservation of Date Palm Germplasm

Bekheet

2011

Date Palm Biotechnology

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Date palm (Phoenix dactylifera L.) germplasm is difficult to conserve and store in the form of offshoots or in field collections. Tissue culture technologies have had a major impact on the ex situ conservation of plant genetic resources. In vitro culture techniques supplement date palm conservation efforts and have been applied to germplasm collection, preservation and rapid clonal multiplication. In vitro storage methods have been developed for preservation of date palm germplasm and can be used efficiently for international exchange of germplasm because of their obvious advantages over in vivo material. Preservation of plant cells, meristems and somatic embryos has become an important tool for long-term storage of germplasm utilizing minimum space and low maintenance. Short-and mid-term storage is achieved by controlling environmental growth conditions and nutrient media composition. Long-term storage has been reported for in vitro cryopreservation of date palm cultures. Encapsulation of plant material in alginate beads has been suggested recently as a possible means of date palm germplasm exchange. Knowledge about germplasm diversity and genetic relationships are highly valuable tools in plant conservation strategies. In this regard, a number of molecular biology methods are currently available for analysis of genetic diversity in date palm genotypes. This chapter discusses the general issues and different aspects of plant biotechnology used for management and conservation of date palm cultivars.

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“…Isozyme staining protocols followed methods as described by Bendiab et al (1993). Statistical analysis.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of genetic variability in Algerian clover (Trifolium L.) based on morphological and isozyme markers

Medoukali¹,

Bellil²,

Khelifi³

2015

CZECH J GENET PLANT

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Medoukali I., Bellil I., Khelifi D. (2015): Evaluation of genetic variability in Algerian clover (Trifolium L.) based on morphological and isozyme markers. Czech J. Genet. Plant Breed., 51: 50-61.Genetic variation within and among fifteen Trifolium species represented by 157 accessions was assessed using morphological and isozyme markers. Most of morphometric characters contributed to the discrimination of the species. No significant relationship between the environment of the collection site and morphological features was detected. The two isozyme systems analysed, esterase (EST) and glutamate oxaloacetate transaminase (GOT), proved polymorphic. Phenotype diversity of isozyme markers ranged from 0.07 to 0.61 with an average of 0.31 based on the polymorphic information content. The pairwise Jaccard's similarity coefficient ranged between 0.10 and 0.60, indicating that the collection represents genetically diverse species. A considerable number of species-specific zymograms were detected which can be used for the species identification. The clustering pattern of isozyme markers was incongruent with the groupings based on quantitative traits. The rich isozyme variability present among the Algerian clover species indicates that they can provide good gene resources for breeding.

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Correlation of isoenzyme polymorphism and Bayoud-disease resistance in date palm cultivars and progeny

Cited by 44 publications

References 21 publications

Phenotypic diversity of date palm cultivars (Phoenix dactylifera L.) from Algeria

Phenotypic diversity of date palm cultivars (Phoenix dactylifera L.) from Algeria

In Vitro Conservation of Date Palm Germplasm

Evaluation of genetic variability in Algerian clover (Trifolium L.) based on morphological and isozyme markers

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