Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Physiologia plantarum
38 (1976), S. 0
ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
The factors affecting the absorption and translocation of 14C-dalapon (2.2-dichloropropionic acid) in johnsongrass were studied. Johnsongrass [Sorghum halepense (L.) Pers.] was first pot-grown in a greenhouse and then treated and placed in controlled-environment chambers.Absorption of 14C-dalapon into johnsongrass leaves and subsequent translocation occurred continuously within the plant during a 48-h period after treatment. Gas chromatographic analysis of johnsongrass extracts showed that the dalapon molecule was translocated intact. Absorption and translocation of 14C-dalapon increased as the droplet volume of the diluent was increased from 0.2 to 5.0 μl per treated spot.At 21 and 32°C, translocation of 14C-dalapon from a 2-cm treated leaf section into the plant was greater at 100% than at 35% relative humidity. At 38°C, translocation was greater at 35% than at 100% relative humidity. The addition of 0.5% surfactant to the dalapon solution increased translocation under all environmental conditions studied. The addition of 0.1 M KH2PO4 to dalapon-surfactant solutions increased 4-dalapon translocation under high temperature (38°C), especially at 35% relative humidity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1399-3054.1976.tb03984.x
Permalink
|
Location |
Call Number |
Limitation |
Availability |
