Root system architecture (RSA) plays an important role in water and nutrient uptake for plant development and growth and hence in grain yield. In situ studies of RSA root architecture will assist in the characterization of phenotypes for the purpose of identifying genotypes of cereal plants that are more stress tolerant and are producer of higher grain yield. In this paper we present a method o...

Characteristic differences in pharyngeal volume between Akan +I-Advanced Tongue Root (ATR) vowel pairs have been investigated using Magnetic Resonance Imaging (MRI) techniques, and compared to the similar TenselLax vowel distinction in English. Two subjects were scanned during steady-state phonation of three pairs of contrasting vowels. Analysis of the resulting images shows that it is the over...

h 1989, two levels each of stand density and fertilization were factorially established in an 8-year-old loblolly pine plantation on a P-deficient site. Levels of stand density were nonthinned at 2,732 trees per hectare and thinned at 721 trees per hectare. Fertilizer levels were none or application of 150 kilograms P plus 135 kilograms N per hectare. In 1994, stand basal areas of the nonthinne...

Root growth potential (RGP) measurement can be time­ consuming and tedious, especially when seedlings have fibrous root systems. A volume-displacement technique involving suspending seedling roots and shoots in a clear plastic tube allows rapid estimation of the volume of plant parts while minimizing gravimetric errors. The technique was tested in three experiments examining (1) the repeat­ abi...