lecture 06 - 1/29/2011 PLANT GROWTH REGULATORS Plant...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1/29/2011 1 PLANT GROWTH REGULATORS Plant hormones (phytohormones) Definition: naturally occurring organic chemicals of relatively low molecular weight active in small concentrations - __________ at a given site and translocated to site of action - involved in induction and ____________ of plant growth and development Plant hormones (phytohormones) Important for plant propagation - internal mechanism that regulate function - induce specific responses Important for human health and well- being Produced by fungi and bacteria Derived from Greek – meaning ‘_____________’ Plant growth regulators Growth Regulators -Aux ins Auxin 1 st plant hormone to be discovered Essential role in plant growth and development - gene expression - plant cell expansion - activation of cambial activity - trophic responses - apical dominance Acts in concert or in opposition to signals from other growth regulators Derived from Greek work “auxano” – means “_______________” + AUX -AUX Auxins stimulate cell expansion acid growth theory
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1/29/2011 2 Auxin functions: Tropic responses http://plantsinmotion.bio.indiana.edu/usbg/sensing.htm ________tropism _______ropism Auxin: application in horticulture Ancient use in horticulture:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/03/2011 for the course HORT 201 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

Page1 / 5

lecture 06 - 1/29/2011 PLANT GROWTH REGULATORS Plant...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online