Effects of applying L-methionine,L-phenylalanine and L-tryptophan on Zea mays growth and its nutrient uptake

Abstract

Abstract: A pot experiment was conducted to evaluate the effects of applying L-methionine(L-MET), L-phenylalanine (L-PHE) and L-tryptophan (L-TRP) on the growth of Zea mays and its nutrient uptake, and to determine the optimal application rate of them. The results showed that L-MET, L-PHE and L-TRP could improve the shoot height, shoot and root dry weights, root activity, nitrate reductase and hydrogen peroxidase activities, and N, P, K and Zn uptake of corn. The optimal application rate of L-MET, L- PHE and L-TRP was 0.0185～0.185 mg·kg^-1 soil, 0.2 mg·kg^-1 soil, and 0.03～0.3 mg·kg^-1 soil, respectively, and L-PHE and L-TRP were superior to L-MET.

Key words: Plant growth regulator, Precursor, Zea mays, Growth, Nutrient uptake

CLC Number:

S482.8

CHEN Mingchang, CHENG Bin, ZHANG Qiang, DING Yuchuan, YANG Zhiping, LIU Ping . Effects of applying L-methionine,L-phenylalanine and L-tryptophan on Zea mays growth and its nutrient uptake[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 1033-1037.

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