Growth of Japanese holly as affected by nitrogen and growth regulators

The effects of 3 nitrogen levels and 2 growth regulators on growth of winter and summer propagated cuttings of Ilex crenata cv. Helleri were studied. Nitrogen applications promoted bud break after rooting of summer cuttings and also enhanced the growth of winter rooted cuttings. Generally, plants grown at 300 and 150 ppm N had greater initial shoot numbers and length, secondary shoot numbers and length, height, width, fresh weight, and dry weight compared to plants grown at 50 ppm N. Initially, benzyladenine (BA) at 600 ppm decreased the number of primary breaks and decreased the stem length, while gibberellic acid (GA) at 400 ppm decreased the number of primary bud breaks and increased stem length. The hormone responses persisted for approx. a month, starting a fortnight from the first application. GA₃ + BA caused very erratic responses. There were no N-growth regulator interactions.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Horticulture

Department dc:contributor.department

Horticulture

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1976

Author dc:creator

• Gilliam, Charles Homer

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/70463

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/70463