Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Physiologia plantarum
21 (1968), S. 0
ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Movement of indoleacetic acid (IAA-1-14C) through 5-min segments from stems and roots of Pinus taeda L., P. jeffreyi Gtrev. and Balf., and P. ponderosa Laws, seedlings was measured. All three species showed the same general pattern of IAA-1-14C transport. Predominantly downward movement occurred at all points along the stem and root; least IAA-1-14C transport occurred in segments obtained near the shoot apex; and most occurred in segments obtained near or just below the cotyledons. This pattern of transport gradient is different from that reported in other plants. These results could be interpreted in either of two ways: (1) that transport limitations may control movement of the growth-regulator, or (2) that the transport gradient may be an indication of endogenous growth-regulator levels.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1399-3054.1968.tb07357.x
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