A progress report… citrus response to removed terminal buds and leaves
AuthorS. B. Boswell
Author AffiliationsS. B. Boswell is Associate Specialist, Department of Horticultural Science, University of California, Riverside.
Hilgardia 23(7):10-11. DOI:10.3733/ca.v023n07p10. July 1969.
IT HAS BEEN KNOWN for many years that the apical buds inhibit the growth and development of lateral buds. This inhibition is largely due to growth regulators produced by the apical shoot and leaves. Other researchers have reported that buds are also inhibited by the presence of growing leaves—and that in several herbaceous species, the expanded leaves partially inhibited their axillary buds. Long after the removal of the terminal buds, the leaves delayed axillary bud growth. Defoliation has been shown to significantly accelerate bud growth of Poncirus trijoliata. However, length of time to bud growth varied with the season. The addition of 1 per cent NAA in lanolin paste to the leaf scars of defoliated plants inhibited bud growth. This auxin produced by the leaves may be responsible for inhibition of bud growth, as is auxin produced by the apical bud.
Also in this issue:Keeping California beautiful
“Space” chamber U.C. Berkeley
Insect problems in forest recreation areas pine needle scale… mosquitoes
Weed control in nonbearing citrus
SW44 nondormant alfalfa with stem nematode resistance released to plant breeders
Effects of Ethrel on fruit ripening of tomatoes… greenhouse, field and postharvest trials
Response of eckespoint C-1 poinsettia to growth retardants
Control of thrips on chrysanthemums grown for cut flowers
Irrigated pastures compete favorably with other field crops in California
Chromotropic acid method for determining 2,4-D residues in rinses