Physiological studies of fruit set in strawberry (Fragaria x ananassa Duch. )

Thesis/Dissertation · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5346039

Darnell, R L

The present study was initiated to test the hypothesis that hormones control fruit set by controlling the amount of assimilate transport and accumulation in fruit tissues. The objectives were to compare assimilate mobilization and accumulation in two treatments which induced fruit set; i.e. pollination and exogenous hormone application, versus a non-pollinated treatment which did not induce fruit set. Initial experiments revealed that several auxins which induce parthenocarpic set in June-bearing strawberries did not induce set in the day-neutral cultivar used in this study. The only auxin found which induced set with a single application was indoleacetic acid ethyl ester (Et-IAA). Subsequently, /sup 14/C-Et-IAA was synthesized and the translocation and metabolism of this auxin was examined and correlated with fruit set and initial growth. Et-IAA transport out of the receptacle was not required for induction of set and growth.

• Research Organization: California Univ., Davis (USA)
• OSTI ID: 5346039
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
AUXINS
METABOLISM
NUTRIENTS
MEMBRANE TRANSPORT
STRAWBERRIES
PLANT GROWTH
ACETIC ACID ESTERS
CARBON 14 COMPOUNDS
TRACER TECHNIQUES
CARBOXYLIC ACID ESTERS
ESTERS
FOOD
FRUITS
GROWTH
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
ORGANIC COMPOUNDS
PLANT GROWTH REGULATORS
550501* - Metabolism- Tracer Techniques
551001 - Physiological Systems- Tracer Techniques