Maria Magdalena Brizuela

Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de Anillaco (La Rioja) | CRILAR · Observatorio Nacional de degradacion de Tierras y Desertificacin y Grupo Olivo

Dioecious plants are obligate outcrossers with separate male and female individuals, which can result in decreased seed set with increasing distance between the sexes. Wind pollination is a common correlate of dioecy, yet combined wind and insect pollination (ambophily) could be advantageous in compensating for decreased pollen flow to isolated fem...

Argentina is one of the countries with a vibrant agricultural sector, which provides both economic development opportunities and environmental challenges. Argentina was selected as a case study due to its rich land degradation data, its diverse agroecological systems, and rapid poverty reduction. The country also represents high human development i...

Floral quality is often overlooked as being one of the key yield determinants in olive. One aspect of floral quality is the number of perfect hermaphroditic flowers with both male and female reproductive parts relative to imperfect, staminate (male) flowers. We assessed inflorescence density, number of perfect and imperfect flowers, and inflorescen...

Contents 1 Economics of Land Degradation and Improvement: An Introduction and Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Ephraim Nkonya, Alisher Mirzabaev and Joachim von Braun 2 Concepts and Methods of Global Assessment of the Economics of Land Degradation and Improvement. . . . . . . . . . . . . . . . . . . . 15 Ephraim Nkonya...

Diferentes revisiones coinciden en señalar 2 o 3 especies de Prosopis para el sur de Ecuador y norte de Perú: P. juliflora (SW) DC, P. pallida (Humb. et Bonpl. ex Willd.) Kunth y P. affinis Sprengel. En el presente trabajo se informa del análisis cuantitativo de caracteres foliares de especímenes del genero Prosopis, recolectados a lo largo de la c...

Calcium oxalate crystals are by far the most prevalent and widely distributed mineral deposits in higher plants. In Tradescantia pallida, an evergreen perennial plant widely used as an ornamental plant, calcium oxalate crystals occur in the parenchymal tissues of stem, leaf, and root, as well as in flower organs, in the form of either raphides or t...

Flower phases and flower visitors of Vigna luteola (Jacq.) Benth. were studied in Parque Rivadavia (Concordia, Entre Ríos). Three floral phases were recognized from anthesis until wilting (6-8 hrs.). In the second phase (complete anthesis) the stigma is receptive, pollen is abundant and reacts positively to peroxidases; nectar is scarce. Pollen's m...