Search results for "flor"

Forced Flowering in Mandarin Trees Under Phytotron Conditions

2019

[EN] Phytotron has been widely used to assess the effect of numerous parameters on the development of many species. However, less information is available on how to achieve fast profuse flowering in young fruit trees with this plant growth chamber. This study aimed to outline the design and performance of a fast clear methodology to force flowering in young mandarin trees (cv. Nova and cv. Clemenules) and to analyze the influence of induction intensity on inflorescence type. The combination of a short water stress period with simulated spring conditions (day 13 h, 22 °C, night 11 h, 12 °C) in the phytotron allowed flowers to be obtained only after 68-72 days from the time the experiment beg…

Hygienic characteristics of radishes grown in soil contaminated with Stenotrophomonas maltophilia

2015

Background: Stenotrophomonas maltophilia is a plant growth-promoter. This bacterium is also implicated in human diseases. Thus, after the use of this bacterium in agriculture, the safety of the final products has to be verified. Due to the ubiquitous presence of S. maltophilia in soil, in this study a massive contamination was simulated to evaluate the growth and safety of Raphanus sativus L.. Results: Different inoculums and soil treatment conditions were tested. Soils were analysed weekly and the radishes at harvest for their microbial loads and presence/persistence of S. maltophilia LMG 6606. The concentration of the bacterium added in the different trials decreased during the first week…

Valorizzazione della biodiversità vegetale in ambiente semi-arido: lo Psillio (Plantago psyllium L.)

2010

La Sicilia, caratterizzata da un’ampia variabilità pedo-climatica e da una notevole ricchezza di paesaggi naturali e tradizioni popolari, è sede ideale per la valorizzazione delle risorse vegetali di interesse officinale spontanee o spontaneizzate nell’area mediterranea, da introdurre o diffondere in coltivazione. In questo contesto trova collocazione lo psillio (Plantago psillium L.), una Plantaginacea officinale a ciclo annuale, largamente diffusa nella flora spontanea mediterranea. La droga dello psillio è costituita dai semi, tradizionalmente utilizzati nell’automedicazione erboristica grazie al loro contenuto in mucillagini, sostanze dotate della proprietà di rigonfiarsi ed aumentare d…

Adiciones y revisiones al Atlas de la flora vascular silvestre de Burgos, XI

2017

[ES] Se mencionan 38 táxones con citas y/o comentarios referidos a su existencia en la provincia de Burgos. De ellos, siete suponen una novedad para el catálogo provincial.

Evolución de las poblaciones y aspectos de conservación del endemismo valenciano en peligro de extinción Limonium perplexum

2014

Limonium perplexum Sáez & Rosselló (Plumbaginaceae) es un endemismo exclusivo de la Comunidad Valenciana (Sáez & Rosselló, 1999), únicamente presente en los acantilados de la Sierra de Irta (Peñíscola, Castellón) (Gómez-Serrano et al., 2005), donde se localiza la única población nativa conocida hasta la fecha, dentro de la microrreserva de flora denominada "Torre de la Badum".

Flora italiana di interesse comunitario: risultati del IV Report e Piano nazionale di monitoraggio

2020

Basal heat improves adventitious root quality in Plumeria (Plumeria rubra L.) stem cuttings of different sizes

2014

Root development of hardwood cuttings of Plumeria rubra was investigated in relation to basal heat and the size of cuttings. Terminal cuttings of a clone grown in Sicily were trimmed to various lengths, ranging from 10 to 26 cm. To verify the cutting rooting response to basal heat, half of the cuttings were placed on a basal heated bench (28 ± 3°C, constant temperature) while the remaining were placed on an unheated bench (16-18°C during the night and 20-22°C during the day). Percent rooting and cutting survival were not affected by basal heat and cutting length. However, basal heat positively affected number of roots, length of longest root and bud growth. Increases in the length of the cu…

Low fruit set in a dioecious tree: pollination ecology of Commiphora harveyi in South Africa

2005

Dioecious plant species differ in floral morphology and rewards between females and males. Pistillate flowers on female plants often lack pollen and can be less attractive to pollinators, which can have consequences for the visitation rates of the sexes. We studied the pollination ecology of the dioecious tree Commiphora harveyi in a coastal scarp forest in eastern South Africa. Floral display, visiting insect species, visitation rate and natural fruit set were recorded. Additionally, we pollinated flowers by hand to determine experimental fruit set. We found that male trees had more and larger flowers per inflorescence than female trees. Both sexes produced nectar in low amounts. During 20…

Geographical and ecological outline of metal(loid) accumulating plants in Italian vascular flora

2018

The decontamination of heavy metal polluted soils is one of the major challenges that our industrialized world has to face. Remediation technologies are being developed and employed in order to reduce the potential hazards of metal and metalloid contamination. Plants capable of uptaking metals and metalloids in their tissues can be an effective tool to remove such pollutants from contaminated soils. The use of this plant-driven process (Phytoremediation) requires the knowledge of the right phytoextractors to use when facing different types of contamination. The aim of this paper is to provide an inventory of phytoextractors that can be used in Phytoremediation procedures in Italy. The check…

Specific features of the interfacial tension in the case of phase separated solutions of random copolymers

2000

Abstract Phase diagrams (cloud point curves, critical points, tie lines for constant critical composition) and interfacial tensions as a function of temperature were measured for solutions of two random copolymers: poly(dimethylsiloxane- ran -methylphenylsiloxane) [I] and poly(styrene- ran -acrylonitrile) [II]. Acetone and anisole served as solvents for I and toluene for II; all solutions exhibit UCSTs between 300 and 310 K. The phase separation behavior can be well modeled if one accounts for the molecular and chemical non-uniformities of the random copolymers used in this study. The interfacial tensions σ differ most markedly from that of comparable homopolymer solutions in their correlat…