Cytokinin activities of phenylurea derivatives — Bud growth

✍ Scribed by N. P. Kefford; M. I. Bruce; J. A. Zwar

• Book ID: 104749258
• Publisher: Springer-Verlag
• Year: 1966
• Tongue: English
• Weight: 275 KB
• Volume: 68
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00385289

✦ Synopsis

The induction of cell division in isolated stem-pith of tobacco, a characteristic of the class of plant growth regulators called cytokinins (SKooG, STrOnG and MILL~, 1965), is caused by about 300 structural variants of phenylurea (B~ucE, Zw~ and KEF~O~D, 1965; B~cc~ and ZwA~, 1965). Another biological activity of eytokinins is their acceleration of the growth of buds (WIc~SO~ and T~I~A~N, 1958 ; MILLEtr 1961). This paper reports the activities of some phenylurea derivatives in the growth of lateral pea buds retarded in their growth by the activity of the apical bud. The synthesis and purification of the phenylurea derivatives was described by BR~;cE and ZwA~ (1965).

The methods used were similar to those of SACKS and T~IMA~ (1964).

Pea (Pisum sativum cv. Alaska 1) plants were grown in soil in a glasshouse