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jean2008

½ð³æ (СÓÐÃûÆø)

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Immediately after plants were removed from the spray
chamber, four 1-ml droplets of 14C-glyphosate spotting
solution were placed on the adaxial surface of the secondright
leaflet on the sixth true leaf of each plant during the
first run of the experiment, with leaflets on the right and left
of the petiole closest to the stem numbered as the first
leaflet on the right and the first leaflet on the left, respectively.
The 14C-glyphosate spotting solution was prepared by combining
56.3 ml of a 14C-glyphosate solution5 [14C-phosphonomethyl-
labelled with 88.8 Bq mmol21 specific activity, . 98%
radiochemical purity] with 944 ml of the respective glyphosate
spray solution, resulting in an activity of 417 Bq ml21.
During the second run of the experiment, the 14C-glyphosate
spotting solution was placed on the adaxial surface of the secondright
leaflet on the fourth true leaf. Leaves chosen for spotting
were located near the top of the plant and would consistently
intercept the spray solution. The difference in location of
the spotting location between the two runs was due to differences
in plant heights (Table 2). Droplets were placed randomly on
the leaflet with a digital microsyringe,6 but leaf veins were
avoided.

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sdywhxlql

½ð³æ (СÓÐÃûÆø)

jean2008(½ð±Ò+20, ·­ÒëEPI+1): 2010-04-27 08:18
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