Acytogenetic study was performed on 66 tetraploid cotton cultivars (Gossypium hirsutum L.) and their hybrids. The cultivars studied differed significantly in their chiasma frequency and distribution as well as chromosome pairing indicating their genetic differences. Adjacent and alternate quadrivalents were formed in most of the cultivars. A-A or D-D heterozygote translocations occurred in most...

A replicated field study was conducted from 1972 to 1980 involving soybeans grown in 2-, 3-, and 4-year rotations with maize in soil infested with Meloidogyne incognita. Monocultured soybeans were maintained as controls. Cropping regimes involved root-knot nematode susceptible and resistant soybean cultivars and soybeans treated and not treated with nematicides. Yields of susceptible cultivars ...

Reasons for the variable amylose content of endosperm starch from waxy cultivars of barley (Hordeum vulgare) were investigated. The mature grains of most such cultivars contain some amylose, although amounts are much lower than in wild-type cultivars. In these low-amylose cultivars, amylose synthesis starts relatively late in grain development. Starch granules in the outer cell layers of the en...

Increasing international travel and trade have rendered U.S. borders much more porous and dramatically increased the risk of introductions of invasive plant pests into agricultural crops (1). Nationally, the responsibility for safeguarding agriculture falls to the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine (USDA, APHIS, PPQ). Howe...

NMR spectroscopy C. Baligand, R. S. Vohra, F. Ye, J. Keener, W. Lim, S. C. Forbes, P. K. Shah, P. Bose, G. A. Walter, F. Thompson, and K. H. Vandenborne Physiology and Functional Genomics, University of Florida, Gainesville, Florida, United States, Physical Therapy, University of Florida, Gainesville, Florida, United States, North Florida/South Georgia Veterans Health System of Florida, Gainesv...

Snap bean (Phaseolus vulgaris L.) is a major crop in the Great Lakes region of the United States. The most significant production occurs in Wisconsin, Michigan, New York, Illinois, and Pennsylvania. Snap bean crops also are produced in the Pacific Northwest, Georgia, Florida, and Ontario, Canada. In 2005, 124,367 ha of snap bean were harvested with a farm gate value of approximately $400 millio...

Mihaela Balu, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland,* Sheng Yao, Kevin Belfield, Shijun Zheng, Stephen Barlow, and Seth Marder CREOL and Florida Photonics Center of Excellence, The College of Optics and Photonics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700, USA Department of Physics, University of Central Florida, 4000 Central Fl...

Soybean (Glycine max) producers in Ohio rarely use soybean cyst nematode (Heterodera glycines, SCN)-resistant cultivars because of concerns over limited yield potential and lack of resistance to Phytophthora sojae. A two-year study was initiated to determine grain yield and nematode population increase on soybean cyst nematode-resistant cultivars in maturity groups II and III in production fiel...