Exogenous application of tryptophan and indole acetic acid (IAA) to induce root nodule formation and increase yield of soybean

Sudadi , (2012) Exogenous application of tryptophan and indole acetic acid (IAA) to induce root nodule formation and increase yield of soybean. Agricultural Science Research Journal, 2 (4). pp. 134-139. ISSN 2026-6073

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    Abstract

    This study aimed at understanding to what extent extracellular tryptophan and indole acetic acid (IAA) induce soybean root nodules formation. Greenhouse experiment was conducted in plastic pots and sterile sand planting medium, arranged in completely randomized design (CRD) with three replications. The factors evaluated were, type of phytohormones (tryptophan and IAA), application time (early planting, vegetative phase 1, vegetative phase 3) and hormone concentrations (0; 0.001; 0.01; 0.1; 1, 0 and 10, 0 ppm). The results showed that both tryptophan and IAA induced root nodules formation. Additionally, the addition of extracellular hormones also increased shoot and root dry weight as well as soybean yields. Highest root nodules number and soybean yield were taken from the treatment of 1.0 ppm tryptophan applied in early planting. It seemed that higher concentrations of tryptophan or IAA are required when applied at early planting, presumably because of its concentration decreases prior to root hairs formed.

    Item Type: Article
    Subjects: S Agriculture > S Agriculture (General)
    Divisions: Lembaga Penelitian dan Pengabdian Kepada Masyarakat - LPPM
    Depositing User: Anis Fagustina
    Date Deposited: 05 May 2014 07:31
    Last Modified: 05 May 2014 07:31
    URI: https://eprints.uns.ac.id/id/eprint/14920

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