Search results for "Pyrus"
showing 10 items of 30 documents
Ancient Pomaceae (Malus domestica Borkh. and Pyrus communis L.) cultivars in “Appenino Toscano”(Tuscany, Italy): molecular (SSR) and morphological ch…
2008
EMPEDOCLES AND THE BIRTH OF TREES: RECONSTRUCTING P.STRASB. GR. INV. 1665–6, ENS. D–F 10B–18
2019
The reconstruction of ensemble d–f of the Akhmîm Papyrus, better known as the Strasbourg Papyrus, which attests approximately eighteen of the over seventy new lines of Empedocles’ physical poem, has drawn the attention of scholars over recent years. Thanks to the good condition of the papyrus and the coincidence with two Empedoclean lines, already known from the indirect tradition, ensemble d–f 1–10a presents a well-restored text and an intelligible sense. In contrast, because of the damaged state of the papyrus, the restoration of d–f 10b–18 is more complicated. These lines seem to describe a life-generative process, but what process was Empedocles talking about? Some resemblances between …
Exploring new roles for the rpoS gene in the survival and virulence of the fire blight pathogen Erwinia amylovora
2014
Erwinia amylovora causes fire blight in economically important plants of the family Rosaceae. This bacterial pathogen spends part of its life cycle coping with starvation and other fluctuating environmental conditions. In many Gram-negative bacteria, starvation and other stress responses are regulated by the sigma factor RpoS. We obtained an E. amylovora rpoS mutant to explore the role of this gene in starvation responses and its potential implication in other processes not yet studied in this pathogen. Results showed that E. amylovora needs rpoS to develop normal starvation survival and viable but nonculturable (VBNC) responses. Furthermore, this gene contributed to stationary phase cross-…
Per l'interpretazione di Pindaro fr. 140 a S./M. (=G 8 Ruth.)
2011
Development of an efficient regeneration protocol for pear rootstock Pyrodwarf and assessment of somaclonal variability using SSR analysis.
2009
Color and sensory changes in fresh cut pear during storage comparing ‘Coscia’ and ‘Butirra’, cultivated in southern Italy
2023
Pear (Pyrus communis L.) cultivars ‘Coscia’ and ‘Butirra’, cultivated in southern Italy are characterized very excellent by aroma and texture. Visual appearance is the primary descriptor that determines the acceptance of fresh-cut pears. Softening is another important quality parameter which considerably influences the acceptance of fresh-cut pears. The aim of this work was to study the effect of genotype on shelf life and quality of fresh-cut pear fruit harvested at commercial maturity stage. After cutting, pear fruit samples were stored under passive atmosphere at 5±1°C for 3, 5, 7 and 12 days. Fruit color (L*, a*, b*, ΔE), consistence, solid soluble, titratable acidity, CO2 and O2 packag…
Valutazione dei cambiamenti qualitativi di frutti di pero trattati con edible coating in post-raccolta
2021
La pera è un frutto climaterico caratterizzato da intensa attività metabolica post-raccolta, fattore che inficia notevolmente le sue caratteristiche qualitative pregiudicandone la shelf-life e obbligando gli attori economici a ricorrere a costosi metodi di condizionamento come la frigoconservazione anche quando il prodotto è destinato al consumo fresco con un conseguente aumento dei costi in fase distributiva e di commercializzazione. Lo scopo del presente lavoro è stato quello di studiare gli effetti di diversi edible coating, barriere selettive edibili facilmente realizzabili con matrici a basso costo ed ecocompatibili in grado di preservare il prodotto, su frutti di pero al fine di indiv…
Caratterizzazione morfologica del polline dei taxa siciliani del genere Pyrus (Rosaceae)
2013
Genetic diversity on Pyrus L. (Rosaceae) in Sicily
2009
The genetic diversity on six Pyrus species (P. amygdaliformis, P. pyraster, P. communis, P. vallis- demonis, P. sicanorum, P. castribonensis) from Sicily was investigated using isozymes. Atotal of 26 alleles was found in 8 loci of 5 enzyme systems (IDH,MDH, 6-PGD, PGI and SKD). The allelic frequencies and the genetic variability values for each population were calculated. The greatest rate of polymorphism was found in P. sicanorum, P. castribonensis and P. amygdaliformis from Sicani Mts. The relationships among the populations were computed by Nei’s genetic identity/distance and the obtained dendrogram shows a remarkable genetic distance of P. vallis-demonis from of all other investigated t…