Liu XL^1,2, JH Li^2,3, JY Zhu², YF Yang¹

Phyton-International Journal of Experimental Botany, Vol.85, pp. 297-304, 2016, DOI:10.32604/phyton.2016.85.297

Abstract Spring ephemeroid plants complete their aboveground reproduction and growth during the short growing season, and may go dormant subsequently underground. Little is known about the underground dormancy and biological activities of the plants. In this study, we observed organogenesis and growth rhythm of rhizome buds of Adonis amurensis Regel et Radde, a spring ephemeroid plant from the Changbai Mountains in northeastern China. Our results showed that A. amurensis did not go through summer dormancy, but started producing mixed buds on rhizomes soon after the aboveground parts had died. The buds grew in length and diameter following an exponential model with… More >

Bernacki FG¹, PL Albornoz^1,2, M Valoy¹, M Ordano^1,3

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 478-487, 2015, DOI:10.32604/phyton.2015.84.478

Abstract Solanaceae is a family with nearly 2400 species of cosmopolitan distribution. Vassobia breviflora is the only species of the genus present in Argentina. The goal of this work was to review and characterize the anatomy of the flower and fruit of V. breviflora from samples collected in populations of Yungas in the argentine Northwest. Conventional anatomical techniques were applied. The results showed that most flower, fruit and seed structures did not differ from those previously reported regarding the structural organization described for other species of the Solanaceae family. However, for the first time, we described the androecium, fruit, seed, floral… More >

Alomá Moreno O¹ y MJ Freuler²

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 466-472, 2015, DOI:10.32604/phyton.2015.84.466

Abstract The present study of the Orchidaceae family was carried out in Guamuahaya’s mountain range, from 2000 to March 2013. Fifteen districts were explored after 33 expeditions in the Province of Cienfuegos. Ninety two plant species were identified in the studied area, taking into account the ecological parameters of the mountainous areas of Cienfuegos and Cumanayagua municipalities. More >

Chen XJ¹, RJ Guo², YJ Tao², X Hu², QL Xu²

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 368-374, 2015, DOI:10.32604/phyton.2015.84.368

Abstract PttKN1 gene (Populus tremula × P. tremuloides KNOTTED1) was isolated from the vascular cambium of a hybrid aspen. Previous studies on transformed plants with the PttKN1 gene suggested that it plays roles in plant development (typically in meristem initiation), maintenance and organogenesis in simple-leaved species. To investigate the gene functions further, sequence analysis of the deduced amino acid was conducted. The results suggested that the gene belongs to the class I KNOX gene (KNOTTED1-like homeobox genes) family and might play important roles in plant development by coding a transcription factor. The gene was introduced into Cardamine hirsuta using the floral… More >

Morales-Pérez E¹, EJ Morales-Rosales², O Franco-Mora², D de Jesús Pérez-López², A González-Huerta², E Urbina Sánchez³

Phyton-International Journal of Experimental Botany, Vol.83, pp. 333-340, 2014, DOI:10.32604/phyton.2014.83.333

Abstract The aim of this study was to assess different doses of gibberellic and salicylic acids for the production of flowers on Gerbera jamesonni after applications to their foliage or substrate under greenhouse conditions. The ten treatments (growth regulators) were evaluated in a 10 x 2 factorial experiment in a randomized complete block design with four replications. When F values were significant, the honestly significant difference test (HSD) at the 5% level of significance was used. The principal components analysis was also used to study the interrelationship among the ten treatments and the two forms of application (foliar or substrate). The… More >

Santander F¹, C Fredes¹, G Nuñez¹, G Casaubon², MI Espinoza², G Montenegro¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 17-26, 2014, DOI:10.32604/phyton.2014.83.017

Abstract Currently, the search for chemical markers related to the botanical origin of honey is an important issue because of its potential use as a complementary tool for melisopalinological analysis. The objective of this research was to compare the (1) volatile compounds of Quillaja saponaria Mol. (Fam. Quillajaceae) floral nectar with those of unifloral honey of this same species, and (2) volatile compounds in Q. saponaria honeys from the same geographical origin. For the identification and semiquantification of volatile compounds, Gas Chromatography with Mass Spectrometry (GC-MS) was performed. The nectar of Q. saponaria presented volatile compounds different from the compounds identified… More >

Torres Robles SS¹, G Peter^1,2, NM Tur³

Phyton-International Journal of Experimental Botany, Vol.80, pp. 133-138, 2011, DOI:10.32604/phyton.2011.80.133

Abstract Myriophyllum aquaticum (Vell.) Verdc. is native of South America and has a pantropical distribution. This species has been cited as dioecious, monoecious and polygamous. The purpose of this paper was to contribute to the discussion of its sexual condition, based on herbarium material, and supported by field observations. Herbarium material from Argentina was examined. Also, twenty branches from the Punta Lara Nature Reserve (Buenos Aires, Argentina) were periodically sampled to record the sex of flowers present on each whorl during the flowering period of 2002. Both in herbarium material and in field, we observed specimens with branches bearing either female… More >

Farhad H. Aziz

Phyton-International Journal of Experimental Botany, Vol.80, pp. 35-46, 2011, DOI:10.32604/phyton.2011.80.035

Abstract Samples and specimens of mosses were collected in different parts of Erbil, Sulaimani, Duhok and Even Kirkuk provinces in Iraq Kurdistan Region, since 1998 to April 2010. This collection could be taken as the representative species of mosses on the soil surface, rocks and tree barks of either terrestrial and aquatic habitats of foothills, mountains and plains. A total of 67 species distributed in 32 genera, 16 families and 9 orders were found. Among them there were 17 species in 10 genera, the 2 families Schistogaceae and Ephemeraceae and the single order Schistostegales. The rarest species recorded in this study… More >

Montenegro G, F Salas, RC Peña, R Pizarro

Phyton-International Journal of Experimental Botany, Vol.78, pp. 141-146, 2009, DOI:10.32604/phyton.2009.78.141

Abstract The detection of phenolics, flavonoids and related compounds by HPLC in extracts of unifloral honey of Quillay (Quillaja saponaria) showed phenolic compounds such as caffeic, coumaric and salicylic acids, the flavanone naringenin and the flavonol kaempferol. These extracts showed antibacterial activity against Pseudomonas aureginosa, Escherichia coli, Staphylococcus typhi, S. aureus, Streptococcus pneumoniae type β, and Vibrio cholerae, and antifungal activity against Candida albicans. Additionally, some aroma and decomposition compounds were identified in the ethanol extract. More >

Montenegro G^1,*, M Gómez¹, G Casaubon², A Belancic², AM Mujica¹, RC Peña¹

Phyton-International Journal of Experimental Botany, Vol.78, pp. 61-65, 2009, DOI:10.32604/phyton.2009.78.067

Abstract Three unifloral honeys were identified by the pronounced presence of specific compounds by means of sensorial analysis and SPME-GC-MS. Smoky and resinous (‘propolis’) odors characterized unifloral “quillay” (Quillaja saponaria) honey. “Corontillo” (Escallonia pulverulenta) honey was characterized by caramel and vanillin aromas, and “ulmo” (Eucryphia cordifolia) honey by having an anise scent with a floral jasmine note. Safranal was a useful marker for “corontillo” honey. Isophorone and cetoisophorone were the distinctive compounds of unifloral “ulmo” honey. In “quillay” honeys, megastigmatrienone, 2-p-hydroxyphenylalcohol and minor quantities of β-pinene and linalool oxide were correlated with their sensory properties such as resinous. More >