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Filtering by: Creator Lien, Harold Academic Affiliation Botany and Plant Pathology

The effects of a mutation within vitamin E biosynthesis upon the development and function of the photosynthetic apparatus

Creator:

Sicher, Richard Charles

Abstract:

A new photosystem-II mutant of the green alga Scenedesmus obliquus D₃, strain PS-28, has been shown to lack a-tocopherol (vitamin E). The photosynthetic activity of dark grown samples of PS-28 is about 20% of the wild-type control. Culturing the mutant at low light intentisites (10⁴ ergs/sec-cm ²) stimulates photosynthetic activity...

Resource Type:

Dissertation

Full Text:

appreciation is extended to Drs. Harold Evans, Don Reed, Irvin Isenberg, and B. J. Verts for serving on my
Description of the plant communities and succession of the Oregon coast grasslands

Creator:

Ripley, James Douglas

Abstract:

In an effort to describe the plant communities and succession of the Oregon coastal grasslands, vegetation and environmental data were collected from 75 stands at 24 separate locations ranging from Cape Falcon in Tillamook County to Cape Ferrelo in Curry County. The vegetation data consisted of cover and frequency values...

Resource Type:

Dissertation