A study of the SH and SS content levels during vernalization of
wheat was made. In order to carry out the study, a rapid analytical
technique was worked out which allowed fast sequential analyses of
the samples of wheat tissue.
Two techniques were used: a) an amperometric titration
method and...
Two seed sources of Douglas-fir (Pseudotsuga menziesii
(Mirb.) Franco) seedlings were grown under several environments
in controlled growth chambers and in a natural environment. All
seedlings were grown for six months and then harvested.
One purpose of this study was to observe environmental influences
on the anatomy of the needle....
Several hundred two year old Douglas-fir (Pseudotsuga
menziesii (Mirb.) Franco) seedlings were planted in an enclosure
designed to permit control of soil moisture. The seedlings came
from five seed sources in southern Oregon and one seed source in
northwestern Oregon. Mortality terminal and lateral budburst,
and soil moisture were recorded...
A quantitative and predictive measure of seedling vigor during the regeneration chain would be of utmost help for forest regeneration work. This was the impetus
to study the possibility of using abscisic acid (ABA) concentration of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) needles as an indicative measure of seedling vigor prior...
Three experiments were conducted on containerized seedlings to examine the short-term and long-term effects of environment on the root regeneration potential, and to examine the fate of the current photosynthate and its relationship to the root regeneration potential. The short-term effects were studied first in a 3x3x2 factorial experiment comprising...
