No-till pasture renovation can increase the quality and forage yield of underproductive pastures. Decreased erosion, lower costs, and less lost grazing time are advantages of no-till renovation compared to conventional renovation. Unwanted vegetation is first controlled with herbicides to decrease competition for introduced orchardgrass. Two field trials were conducted using...
The developmental cytology of the elaiosome of
Dicentra formosa (Andr.)Walp. was investigated from the
time of initial differentiation until complete maturation.
Light and transmission electron microscopy studies
showed that the elaiosome becomes differentiated from
epidermal tissue in the prefertilized ovule. At this time
the cells are characterized by their large...
The teliospore of Tilletia caries germinates to produce a promycelium
with a whorl of primary sporidia at its tip. The time between
emergence of the promycelium and the development of primary sporidia
averaged 2.3 h. Fusion between compatible sporidia occurred within
an additional 3.8 h. Primary sporidia appeared to be...
Published March 1893. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Shoot regeneration in vitro is a difficult problem for cherry species. This study addressed three approaches to the problem, regeneration of adventitious shoots from roots and leaves of mature cherry clones, and from cotyledons of open-pollinated 'Royal Ann' cotyledons. Regeneration on roots occurred at a very low frequency. Adventitious shoots...