Title: EFFECT OF MAIZE PLANT DETASSELING ON GRAIN YIELD, TOLERANCE TO HIGH PLANT DENSITY AND DROUGHT STRESS 1
Abstract:Maize (Zea mays L.) is unusually susceptible to drought and high density stresses at fiowering. In part, this is related to its monoecial floral organization, which favors development ofthe male inflo...Maize (Zea mays L.) is unusually susceptible to drought and high density stresses at fiowering. In part, this is related to its monoecial floral organization, which favors development ofthe male inflorescence, assurini j,ollen production and dispersion at the expense of ear and silk develop- ment. This field experiment was conducted to evaluate the potential benefits of eliminating the tassel, in terms of increasing grain yield and maize tolerance to high piam density and drought stress. Four genotypes were studied in 1993 and 1994 in Ames, IA, liS. Each genotype was evaivated at the densities of 25,000 and 75,000 pl ha1. Tassel removal, either partial or total, did not significantly enhance grain yield and components, regardless of plant density or cultivar. Grain yield was higher at 75,000 p1 ha' than at 25,000 p1 ha' in both years. No difference in grain yield was observed between male-sterile and fertile counterparts. The absence of drought stress, and the mechanical damage to the leaves during tassel removal contributed lo prevent a positive response of grain yield to tassel suppres- sion.Read More
Publication Year: 1998
Publication Date: 1998-01-01
Language: en
Type: article
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Cited By Count: 11
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