Search results for "Trifolium"

Taxonomical remarks on Trifolium savianum Guss. and its relationship with T. uniflorum L.

1996

In the frame of investigations on endemic or rare taxa of the Sicilian flora, Trifolium savianum Guss., a misappreciated species occurring in a small area of Peloritani mountains (NE Sicily) is examined. According to literature data, the species has been considered as a synonym of T. uniflorum L. (Lojacono, 1891; Zohary, 1969; Jafri, 1980; Zohary & Heller, 1984; Greuter, 1989), as a variety (Gibelli & Belli, 1892; Vierhapper, 1919; Fiori, 1925) or as a subspecies of the aforesaid species (Nyman, 1878; Coombe, 1968; Tutin et al., 1968; Pignatti, 1982). The analysis of morphological features, carried out on herbarium and living matherial, has highlighted that T. savianum can be considered as …

Valutazione di accessioni di trifoglio squarroso ed incarnato allevate con metodo biologico in coltura pura ed in consociazione con loiessa in ambien…

2008

Segnalazione per la flora siciliana di Trifolium ornithopodioides L. (Fabaceae) e revisione della sua area di distribuzione.

2011

Trifolium ornithopodioides (L.) Sm. (Fabaceae) a new record for the Sicilian flora – T. ornithopodioides, a rare element of the Italian flora, is recorded for the first time in the territory of Palermo (Western-Sicily). The population identified, consisting of about one hundred individuals, colonizes a narrow area between the roadside and the edge of the freshwater temporary pond of Rebuttone, on acidic substratum (flysch) at 720 m a.s.l. After the examination of herbarium specimens (RO and FI) and literature, some incongruences have been found on the Italian distribution of this taxon. A distribution map including the new record, new literature data and corrections is presented.

Amplification, contraction and genomic spread of a satellite DNA family (E180) in Medicago (Fabaceae) and allied genera

2011

†Background and Aims Satellite DNA is a genomic component present in virtually all eukaryotic organisms. The turnover of highly repetitive satellite DNA is an important element in genome organization and evolution in plants. Here we assess the presence and physical distribution of the repetitive DNA E180 family in Medicago and allied genera. Our goals were to gain insight into the karyotype evolution of Medicago using satellite DNA markers, and to evaluate the taxonomic and phylogenetic signal of a satellite DNA family in a genus hypothesized to have a complex evolutionary history. †Methods Seventy accessions from Medicago, Trigonella, Melilotus and Trifolium were analysed by PCR to assess …

Growth and Physiological Performance of a Coastal Species Trifolium fragiferum as Affected by a Coexistence with Trifolium repens, NaCl Treatment and…

2021

The aim of the present study was to analyze the growth and physiological performance of two coexisting species, Trifolium fragiferum, and Trifolium repens, under the effect of NaCl and rhizobial symbiosis. Seeds of T. fragiferum and T. repens were collected from populations in the wild, and plants were cultivated in an automated greenhouse, two plants per container. Three basic types of planting were performed: (1) both plants were T. fragiferum (single species), (2) one T. fragiferum and one T. repens (species coexistence), (3) both plants were T. repens (single species). For every basic type, three subtypes were made: (1) non-inoculated, (2) inoculated with rhizobia taken from T. fargifer…

Taxonomical and phytogeographycal remarks on Trifolium savianum Guss., a misappreciated species of the Italian flora.

2000

The taxonomic position, chorology and phytosociological role of Trifolium savianum, a misappreciated species of the Italian flora, are examined. The species is closely related to T. uniflorum, E.-Mediterranean element, from which it differs in several morphological features regarding leaves, flowers and fruits. Distinction of the two taxa at the specific level is also supported by their geographical isolation dating back to the end of the Messinian period. From the phytosociological point of view, T. savianum is a member of an orophilous grassland rich in chamaephytes belonging to Plantaginion cupani, alliance of Molinio-Arrhenatheretea. This community is proposed as a new association, name…

Effects of continuous and rotational grazing of different forage species on ewe milk production

2012

Abstract The aim of this research was to evaluate the effects of continuous and rotational grazing of different forage species on milk production in ewes. The forage species were chicory (Cichorium intybus L.), a mixture of oat (Avena sativa L.) and berseem clover (Trifolium alexandrinum L.), and sulla (Hedysarum coronarium L.). Forty ewes were divided into 5 groups, and subjected to one of the following treatments: continuous grazing on chicory, continuous grazing on the mixture, continuous grazing on sulla, rotational grazing on the mixture, or rotational grazing on sulla. Among the species continuously grazed, chicory showed a lower biomass than the mixture, or sulla. Ewes grazing chicor…

Effects of stubble height and cutting frequency on regrowth of berseem clover in a Mediterranean semiarid environment

2011

Defoliation management of forage crops affects endogenous reserves (in the root and in the stubble), the residual leaf area, and, consequently, the regrowth and biomass yield. The aim of this study was to evaluate the effect of cutting frequency (28-d vs. 35-d intervals) and stubble height (3 vs. 6 cm) on forage yield, regrowth, and persistence of berseem clover (Trifolium alexandrinum L.). Neither cutting interval nor cutting height affected plant survival during the crop cycle. Frequent clipping reduced crop yield. Residual biomass and leaf area were less when plants were cut at a height of 3 cm compared with 6 cm, but stubble height did not affect the total amount of dry matter (DM) remo…

Nonhormonal management of postmenopausal women: Effects of a red clover based isoflavones supplementation on climacteric syndrome and cardiovascular …

2013

The aim of this prospective randomized study was to evaluate a red clover based isoflavones supplementation in the treatment of climacteric syndrome and its effects on cardiovascular risk serum profile. Materials and Methods: The study included 150 healthy postmenopausal women that were randomly assigned to receive phytoestrogens tablets, amounting in a total daily intake of 60.8 mg red clover isoflavones plus 19.2 mg soy isoflavones (n = 75), or placebo (n = 75). The authors evaluated teh following: daily number of hot flushes and Kupperman Index at baseline and after one and three months; serum total, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol, triglyceri…

Global urban environmental change drives adaptation in white clover

2022

Made available in DSpace on 2022-04-28T19:52:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-03-18 Urbanization transforms environments in ways that alter biological evolution. We examined whether urban environmental change drives parallel evolution by sampling 110,019 white clover plants from 6169 populations in 160 cities globally. Plants were assayed for a Mendelian antiherbivore defense that also affects tolerance to abiotic stressors. Urban-rural gradients were associated with the evolution of clines in defense in 47% of cities throughout the world. Variation in the strength of clines was explained by environmental changes in drought stress and vegetation cover that varied am…