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  • Open Access


    Pre-Breeding Genetic Diversity Assessment of Tomato (Solanum lycopersicum L.) Cultivars Based on Molecular, Morphological and Physicochemical Parameters

    Jameel M. Al-Khayri1,*, Salha M. Alshamrani2, Adel A. Rezk1, Wael F. Shehata1, Mustafa I. Almaghasla3, Tarek A. Shalaby3,4, Ahmed M. Saad5, Fatmah A. Safhi6, Muhammad N. Sattar7, Arafat A. Abdel Latef8, Mahmoud Z. Sitohy5, Abdallah A. Hassanin9,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.5, pp. 1493-1512, 2023, DOI:10.32604/phyton.2023.027375

    Abstract Appropriate knowledge of the parental cultivars is a pre-requisite for a successful breeding program. This study characterized fruit yield, quality attributes, and molecular variations of ten tomato cultivars during three consecutive generations under greenhouse conditions. Peto 86, Castle Rock, and Red Star cultivars showed the highest fruit yield (kg/plant), total phenolic compounds (TPC), and sap acidity. Principal component analysis categorized the evaluated fruit yield into three groups based on their quality attributes. A robust positive correlation appeared among traits inside each group. A positive correlation was likewise noticed between the first and the second groups. However, a negative correlation was… More >

  • Open Access


    Development of new cowpea (Vigna unguiculata) mutant genotypes, analysis of their agromorphological variation, genetic diversity and population structure


    BIOCELL, Vol.45, No.2, pp. 345-362, 2021, DOI: 10.32604/biocell.2021.013706

    Abstract Cowpea is one of the most important legume grains in the sub-Saharan region of Africa used for human consumption and animal feed, but its production is hampered by biotic and abiotic constraints raising the need to broaden its genetic basis. For this purpose, seeds of two cowpea varieties Melakh and Yacine were irradiated with 300 and 340 Gy of gamma-ray, respectively. The developed mutant populations were agromorphologically characterized from M5 to M7, while the genetic diversity of the latter was evaluated using 13 ISSR markers. Based on the agromorphological characterization, variation of flower color, pod length, seed coat color, and… More >

  • Open Access


    Ethyl Methanesulfonate as Inductor of Somaclonal Variants in Different Crops

    José Gregorio Joya-Dávila, F. A. Gutiérrez-Miceli*

    Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 835-850, 2020, DOI:10.32604/phyton.2020.013679

    Abstract Ethyl methanesulfonate is a chemical mutagen, which is currently being used in plant breeding, to increase genetic variability in genes of agronomic interest, of species useful in agriculture. It primarily causes single base point mutations by inducing guanine alkylation, resulting in GC to AT transitions. Its effect is different between clones of a genotype and between genotypes of the same species. This review presents the results obtained in recent research, where its effect on plant tissues, callus, and cells in suspension has been evaluated. Changes in the phenotypic expression of somaclonal variants were reported, involving morphology, production of secondary metabolites,… More >

  • Open Access


    Advances and perspectives on the gene mapping of root rot resistance in common beans

    Méndez-Aguilar R1, MH Reyes-Valdés2, N Mayek-Pérez3

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 215-226, 2013, DOI:10.32604/phyton.2013.82.215

    Abstract Common bean was originated in México, and it is the most important protein source for millions of Mexicans, mainly those with low economic incomes. Grain yield of this crop is mainly affected by several fungal, bacterial and viral diseases. Among them, there are root rot diseases caused by the genera Macrophomina and Fusarium sp. Currently, some molecular biology tools such as DNA molecular markers are being used successfully to develop genetic maps where QTLs and major molecular markers are located, which are linked to genes that confer resistance to these fungi. The importance of the development of genetic maps is… More >

  • Open Access


    Statistical models for evaluating the genotype-environment interaction in maize (Zea mays L.)

    Kandus1 M, D Almorza3, R Boggio Ronceros2, JC Salerno1

    Phyton-International Journal of Experimental Botany, Vol.79, pp. 39-46, 2010, DOI:10.32604/phyton.2010.79.039

    Abstract Our objective was to determine the genotype-environment interaction (GxE) in a hybrid integrated by maize lines either carrying or not balanced lethal systems. Experiments were conducted in three locations over a period of two years considering each yearlocation combination as a different environment. Yield data were analysed using the Additive Main Effects and Multiplicative Interaction (AMMI) model and the Sites Regression Analysis (SREG). Results were represented by biplots. The AMMI analysis was the best model for determining the interaction. More >

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