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Published online 18 May 2006
Published in Crop Sci 46:1501-1507 (2006)
© 2006 Crop Science Society of America
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Sucrose Synthase Activity as a Potential Indicator of High Rice Grain Yield

Paul A. Councea,* and Kenneth A. Gravoisb

a Univ. of Arkansas, Rice Res. and Ext. Ctr., 2900 Highway 130 East, Stuttgart, AR 72160
b Louisiana State Univ. Agric. Ctr., St. Gabriel Res. Stn., 5755 LSU Ag. Road, St. Gabriel, LA 70776


Figure 1
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  		Fig. 1. Grain weights and sucrolytic enzyme activities for three cultivars of rice: Lemont, Qiguizao, and an F1 hybrid of Lemont and Qiguizao. Data collected are means of up to four samples per sampling date per cultivar from an experiment conducted in a greenhouse in the winter of 1992. Bars are standard errors of the mean.

 

Figure 2
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  		Fig. 2. Individual grain weights and sucrose synthase activities for Bengal, Lemont, and Guichao2 rice grown in the field at Keiser, AR, in 1994. Point values are means of four replications per sampling date per cultivar. Bars are standard errors of the mean.

 

Figure 3
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  		Fig. 3. Rice field grain yields versus sucrose synthase specific activity in Keiser, AR, from 1993 to 1996. Points are means of five or six replications for both rice grain yield at maturity (R9) and sucrose synthase specific activity at 14 d after anthesis.

 




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