The Origin of Bread Wheats

A reassessment of the origin of the polyploid wheats.

The diploid species that donated the A and D genomes to the polyploid wheats have been recognized for some time. New evidence indicates that Triticum speltoides cannot be the B genome donor to T. turgidum or T. aestivum. T. speltoides is probably homologous to the G genome of T. timopheevii. The donor of the B genome to T. turgidum and T. aestivum is currently unrecognized.

Waxy wheats: Origin, properties, and prospects

Unlocking the genetic diversity of Creole wheats.

Climate change and slow yield gains pose a major threat to global wheat production. Underutilized genetic resources including landraces and wild relatives are key elements for developing high-yielding and climate-resilient wheat varieties. Landraces introduced into Mexico from Europe, also known as Creole wheats, are adapted to a wide range of climatic regimes and represent a unique genetic res...

Identification of the VERNALIZATION 4 gene reveals the origin of spring growth habit in ancient wheats from South Asia.

Wheat varieties with a winter growth habit require long exposures to low temperatures (vernalization) to accelerate flowering. Natural variation in four vernalization genes regulating this requirement has favored wheat adaptation to different environments. The first three genes (VRN1-VRN3) have been cloned and characterized before. Here we show that the fourth gene, VRN-D4, originated by the in...

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...