Isolation of triploid and tetraploid olive (Olea europaea L.) plants from mixoploid cv. ‘Frantoio’ and ‘Leccino’ mutants by in vivo and in vitro selection
This paper reports a procedure for isolating triploid and tetraploid olive plants, which have not been produced before either artificially or in nature, from two mixoploid somatic mutants obtained earlier by treating 'Frantoio' and 'Leccino' plantlets with gamma radiation.
Genome size variations within Dasypyrum villosum: correlations with chromosomal traits, environmental factors and plant phenotypic characteristics and behaviour in reproduction
- M. E. Cáceres, C. De Pace, G. T. Mugnozza, P. Kotsonis, M. Ceccarelli, P. Cionini
- BiologyTheoretical and Applied Genetics
- 27 April 1998
Feulgen/DNA cytophotometric determinations carried out in the root meristem of seedlings showed that substantial quantitative alterations in the nuclear genome are present between and within 15 natural populations of Dasypyrum villosum in Italy, as evolutionary factors which allow D. villosUM populations to withstand different environmental conditions as well as the variability of conditions in a given environment.
Genome size variation in Vicia faba
In agreement with the cytophotometric findings, a significant, positive correlation was determined between the DNA contents of populations and the copy numbers of DNA sequences related to FokI repeats, and significant differences between accessions were found in the length of the chromosome complement at metaphase.
Analysis of transposons and repeat composition of the sunflower (Helianthus annuus L.) genome
Most repetitive elements are similar in annual and perennial Helianthus species indicating that sequence amplification largely predates such divergence, and in other species, where single families can account for large fractions of the genome, it appears that no transposon family has been amplified to very high levels in sunflower.
Diversity of Olea genotypes and the origin of cultivated olives
- A. Contento, M. Ceccarelli, M. Gelati, F. Maggini, L. Baldoni, P. Cionini
- Biology, MedicineTheoretical and Applied Genetics
- 17 May 2002
A polyphyletic origin of cultivated olives from different wild Olea forms distributed throughout the Mediterranean Basin is suggested.
Cytogenetics of Triticum × Dasypyrum hybrids and derived lines
- S. Minelli, M. Ceccarelli, M. Mariani, C. De Pace, P. Cionini
- Biology, MedicineCytogenetic and Genome Research
- 1 March 2005
From the frequency of V chromosomes that were involved in chromatin exchanges with or substituted for one of their homeologous counterparts in the A, B, and D wheat genomes, it was inferred that D. villosum belongs to the same phyletic lineage as T. urartu (donor of the A genome of wheat) and Aegilops speltoides (B genome), and that Ae.
Genome size and plant development in hexaploid Festuca arundinacea
By studying plant development in 30 populations of hexaploid Festuca arundinacea, it was found that their genome size correlates negatively with the seed germination power and the early growth of both the seminal root and the first foliage leaf.
Epigenetic patterns within the haplotype phased fig (Ficus carica L.) genome.
The high-quality reference genome and the characterization of methylation profiles, provides an important resource for both fig breeding and for fundamental research into the relationship between epigenetic changes and phenotype, using fig as a model species.
Amount and organization of the heterochromatin in Olea europaea and related species
Investigation of cultivars of Olea europaea found that the inter- and intraspecific changes in the nuclear and genomic traits observed can contribute to the understanding of the phylogenetic relationships between Olea species and in defining parameters to be exploited in varietal identification within cultivated olives.
Chromosome endoreduplication as a factor of salt adaptation in Sorghum bicolor
- M. Ceccarelli, E. Santantonio, F. Marmottini, G. N. Amzallag, P. Cionini
- Biology, MedicineProtoplasma
- 30 May 2006
The salt treatment induced chromosome endoreduplication during the differentiation of cells in the root cortex, where 41.2% of the cells displayed a DNA content higher than 4C (versus 1.3% in control plants).