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Abstract

In the article “ Effect of Fruit Removal on Net Gas Exchange of Avocado Leaves”, by Bruce Schaffer, L. Ramos, and S.P. Lara (HortScience 22:925-927, October 1987), ref. 2 was incorrect. The correct citation is: Annu. Rev. Plant Physiol. 33:317-345.

Open Access

Abstract

All but 10 current-year leaves were removed from girdled branches of avocado (Persea americana Mill.) trees having one remaining fruit or all fruit removed. Removing all fruit resulted in increased leaf dry weight per area (Wa), a 250% increase in the number of starch grains in leaves, and a reduction in leaf conductance (gl) and net CO2 assimilation (A). Internal CO2 concentration (Ci) was lower for leaves of branches with fruit than for leaves of branches without fruit. The results suggest that the accumulation of starch in defruited, girdled branches results in an inhibition of A. The data suggest that the increased gl associated with the presence of avocado fruit is possibly a result of increased A and reduced Ci levels.

Open Access