PROGRESS REPORT ON RADIATION AND ORGANISMS FEBRUARY 1962 TO FEBRUARY 1963

Technical Report · Thu Oct 31 04:00:00 EST 1963

OSTI ID:4734904

Progress is reported in studies on the interaction of photomorphogenesis with the physiology of plant cells. Data are presented from studies on the effect of light pretreatment on starch degradation in etiolated leaves of corn seedlings of various lengths or ages, light-induced starch degradation in plastids of etiolated corn leaves, and the effect of pretreatment with monochromatic red and far-red radiant energy on leaf sections from etiolated corn seedlings. The effects of far-red radiation on chromosome aberrations induced by x radiation were studied in primary roots of Vicia faba. Data are included from studies on changes in somatic mutation frequencies and reduction in seedling height induced by 800 r x rays during germination of maize seed, protein synthesis associated with the formation of the complete photosynthetic system in bean leaves, the kinetics of light-stimulated growth in bean and lettuce seedlings, and biological responses of plants to photochemical reactions initiated by various portions of the spectrum of visible light. (C.H.)

• Research Organization: Smithsonian Institution. Div. of Radiation and Organisms, Washington, D.C.
• NSA Number: NSA-17-013982
• OSTI ID: 4734904
• Report Number(s): TID-17890
• Country of Publication: United States
• Language: English

Related Subjects

BIOCHEMISTRY
BIOLOGY AND MEDICINE
CEREALS
CHROMOSOMES
LIGHT
MAIZE
MUTATIONS
PHOTOCHEMISTRY
PHOTOSYNTHESIS
PROTEINS
QUANTITY RATIO
RADIATION DOSES
RADIATION INJURIES
ROOTS
SEEDS
VICIA FABA
X RADIATION