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  • Open Access


    Phytohormones Accumulation and Distribution in Shoots and Roots of Haploid, Diploid and Tetraploid Barley Seedlings Derived from Microspore Culture

    Longhua Zhou1,2,#, Ting He1,2,#, Jing Li1,2,3, Guimei Guo1,2, Yingbo Li1,2, Hongwei Xu1,2, Runhong Gao1,2, Linli Huang1,2, Yifei Wang1,2, Ruiju Lu1,2, Zhiwei Chen1,2,*, Chenghong Liu1,2,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.7, pp. 1419-1428, 2022, DOI:10.32604/phyton.2022.019912

    Abstract Phytohormones play important roles in plant growth and development, and polyploids are thought to be an important method for plant breeding. However, the relationship between ploidy and phytohormone is still unclear. In this study, barley at three ploidy levels were produced by microspore culture. Therefore, we further analyzed the phytohormone content in the shoots and roots of the three kinds of barley materials to study the effect of ploidy on phytohormones accumulation and distribution. The results showed that Abscisic acid (ABA), gibberellin (GA), jasmonic acid (JA), auxin (IAA), salicylic acid (SA) and cytokinin (CTK) were More >

  • Open Access


    Doubled haploid production in advanced back cross generations and molecular cytogenetic characterization of rye chromatin in triticale × wheat derived doubled haploid lines


    BIOCELL, Vol.45, No.6, pp. 1651-1659, 2021, DOI:10.32604/biocell.2021.015735

    Abstract The rye genome has shown potential for improvement of bread wheat, where wheat-rye substitutions and translocations have been and are frequently used in resistance breeding. Crosses belongs to different generations viz., BC1F1, BC1F2, BC1F3, BC1F4 and BC2F3 of triticale × wheat derived were used for different haploid induction parameters using Gogon grass (Imperata cylindrica) as a pollen source. The percentage of pseudo seed formation ranged from 34.55% for BC1F2 to 63.77 for BC1F1 crosses, the haploid embryo formation ranges from 9.43% for BC1F1 to 30.2% for BC1F2, the haploid plant generation ranges from 19.36% for BC1F2 to 63.25% for BC1F1. Four doubled More >

  • Open Access


    Doubled Haploid Production Using an Improved Anther Culture Protocol for Sorghum [Sorghum bicolor (L.) Moench]

    Paul Chege1,2, Erzsébet Kiss2, Csaba Lantos1, Andrea Palágyi1, János Pauk1,2,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 475-487, 2021, DOI:10.32604/phyton.2021.013557

    Abstract Sorghum [Sorghum bicolor (L.) Moench] can benefit from accelerated breeding and release of improved varieties through doubled haploid technology. The technology has been used in speeding up the breeding of other major cereals such as wheat, maize and rice, for which generally widely applied optimised protocols exist. A reproducible protocol for the crop, that can overcome genotype dependency and other species-specific challenges such as phenolic exudation is however lacking. This study aimed at sorghum doubled haploids production thereby contributing to the development of an improved protocol. From the 28 hybrid genotypes, both F1 registered- and experimental hybrids… More >

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