The taxonomy of the genus Stylophoronychus (Acari: Tetranychidae) is reviewed. The synonymy of Stylophoronychus Prasad, 1975 and Sinotetranychus Ma & Yuan, 1980 is accepted and the former has priority. As a result, the following new combinations are noted: Stylophoronychus guangzhouensis (Ma & Yuan) and Stylophoronychus insularis (Flechtmann). S. baghensis (Prasad) is newly recorded from the mo...

En esta investigación se obtuvo la enzima papaína a partir de látex tres especies del género Vasconcellea, V. chachapoyensis, heilbornii y pubescens, nativas región Amazonas en Perú. El extraído acondiciono con buffer acetato sodio, EDTA solución bisulfito sodio. La purificación realizó adaptando el método Andrade (2011), utilizó sulfato amonio para precipitación; etanol 96° dos etapas dilución...

A systematic study was conducted on P. pubescens by analyzing thermal characteristics of its rhizome and culm (1.5 m) at different ages, using various analyses such as X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetry (TG). For both the rhizome and culm of P. pubescens, the relative crystallinity (Cr) of cellulose increased and then appreciably decreased wit...

Flow cytometric measurements of nuclear DNA content were performed using ethidium bromide as the DNA stain (internal standard, Hordeum vulgare 'Ditta', 1C = 5.063 pg) in 25 samples belonging to nine diploid species and four varieties of Capsicum: C. chacoense, C. parvifolium, C. frutescens, C. chinense, C. annuum var. annuum, C. baccatum var. baccatum, C. baccatum var. pendulum, C. baccatum var...

The biophysical environment is an important determinant of land degradation in both commercial and communal land tenure systems in South Africa. According to a recent study on the status of land degradation, approximately 25% of the total land cover in South Africa is degraded. Several technologies exist to restore the soil and vegetation degraded areas in natural pastures. To improve the produ...

A new natural coumarin, angepubebisin (1), and a new furan, angepubefurin (2), together with the five known compounds, umbelliferone, angelol B (3), ulopterol (4), peucedanol (5), and scopoletin, were isolated from the roots of Angelica pubescens Maxim. f. biserrata Shan et Yuan. The structures of angepubebisin (1) and known compounds were determined by spectroscopic methods, including IR, UV, ...

Lectotypes are designated for four species epithets, including one second-step lectotypification, under the family Gesneriaceae Rich. & Juss., viz., Cyananthus umbrosa Griff., Didymocarpus griffithii Wight, Lysionotus pubescens C.B.Clarke and Petrocosmea parryorum C.E.C.Fisch., along with detailed notes on their typification.

Pterodon (Fabaceae) species known as “sucupira-branca” are traditionally used in Brazilian medicine. This South American monophyletic genus has delimitation problems. To separate the recognized we described wood anatomy of P. abruptus, emarginatus, pubescens, hybrid (between emarginatus and pubescens) apparicioi, latter two for first time. Wood anatomical studies were undertaken, qualitative qu...