Rescate de embriones en híbridos intergenéricos Helianthus annuus x Tithonia rotundifolia

EFFECT of GIBBERELLINS on SEED GERMINATION OF Tithonia rotundifolia Blake

Plant growth studies involve seed germination studies and this depends on storage viability and dormancy aspects besides essential requirements and factors for the same. Of the various factors regulations plant growth and developmental processes intrinsic factors play a significant role. Plant hormones are chemicals that regulate plant growth. These occur in extremely low concentrations and inf...

Descubriendo la Arquitectura de Sistemas de Software Híbridos: Un Enfoque Basado en Modelos i*

La mayoría de sistemas de software modernos se construyen integrando componentes de diversa naturaleza (comerciales, código libre, componentes legados, etc.), formando arquitecturas híbridas. La construcción de este tipo de sistemas se caracteriza por la adquisición de diversos componentes a proveedores externos a la organización que se integran con algún software hecho a medida. La correcta ap...

Resultados a corto plazo de angioplastía de rescate en pacientes con infarto agudo de miocardio con trombólisis fallida

Ent-Kaurene Biosynthesis in Extracts of Helianthus annuus L. Seedlings.

Kaurene synthetase B activity (conversion of copalyl pyrophosphate to ent-kaurene) is readily detectable in crude cell-free extracts of 3- to 4-day old dark-grown sunflower (Helianthus annuus cv. Mammoth) seedlings, whereas little or no kaurene synthetase AB activity (conversion of geranylgeranyl pyrophosphate to ent-kaurene) can be found in these extracts under comparable assay conditions. A l...

Morphogenetical Aspects in Helianthus Annuus L. during the Ontogenesis

Sunflower (Helianthus annuus) is annual plants native to Mexico and is valuable from economic, as well as from ornamental point of view. In this paper the edification of the primary and the secondary structure of the vegetative organs were followed during the ontogenesis. The root with primary structure is tetrarch, with four strands each of xylem and phloem that alternate with one another. In ...