Sperm cells were isolated from corn (Zea mays L.) tricellular pollen grains. They were released using a light osmotic chock, and separated from pollen contaminants (especially starch grains) by a Percoll gradient centrifugation. Isolated sperm cells (3 x 10(6) per milliliter) show a high viability score (90%) as demonstrated with the fluorochromatic reaction. They appeared as spherical cells wh...

Agriculture provides a significant fraction of the food consumed worldwide. In Ecuador, large area is dedicated to production corn (Zea mays L.). However, progress current projections in agriculture may be directly affected by climate change and its effects. The present study aims evaluate impact on maize L.) crop yields over last 10 years (2010 - 2020) predict future under different scenarios ...

Wisconsin dairy farmers produce more corn (Zea mays L.) silage than any other state in the U.S. A University of Wisconsin corn silage research consortium evaluated corn hybrids and found that the range for NDF and digestibility among commercial hybrids is narrow, but more importantly, yield and quality differences among corn hybrids were repeatable (Coors, 1996). In 1995, an extension program w...

The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a major pest of corn, Zea mays L., in North America that has recently invaded Europe. A loss of ovipositional fidelity to cornfields has allowed the species to circumvent crop rotation as a means of control in part of its range in the United States. Analyses of variation at eight microsatellite loc...

Hairy vetch (Vicia sativa L.) succeeded by corn (Zea mays L.)or grain sorghum (Sorghumbicolor L. Moench) were seeded insplit plots randomized within whole plots of no-tillage versus conventional tillage over four growing seasons (1980-83). The vetch-corn cropping system increased the density of Meloidogyne incognita 2.9 X more than the vetch-grain sorghum cropping system. I n contrast, the vetc...

Objective: To characterize agronomically 52 populations of pigmented native corn (Zea mays L.) from Coahuila, Mexico, in order to identify varieties with outstanding agronomic potential and establish an improvement program for grain yield, the ability adapt, superior nutritional bioactive content. Design/Methodology: Two experiments were evaluated through incomplete block design lattice alpha a...