Allelopathic effect between seeds of Sorghum vulgare var. technicum Körn. and Sinapis alba L.

Irena Golubinova, Shteliana Kalinova, Plamen Marinov-Serafimov

Abstract: The allelopathic effect of co-germination of Sorghum vulgare var. technicum Körn. seeds and Sinapis alba L. has been studied under laboratory conditions. Some correlations have been observed. A stimulating effect of 8.9 to 50.0% has been found during the germination of Sorghum vulgare var. technicum Körn. within the co-germination of seeds from different genotypes of technical broom (donor) and seeds of white mustard (acceptor). The co-germination of Sinapis alba L. seeds as a donor and seeds of various technical broth genotypes (Sorghum vulgare var. technicum Körn.) as an acceptor is proving both inhibiting and stimulating effect on seed germination of the technical broom. The inhibiting effect for local varieties is from 8.2 to 33.3%. A stimulating effect (IEA = -50.0%) is found in Szеgedi 1023 variety. The highest overall allelopathic potential (OAP) has provisionally been determined in the broomcorn local varieties S14, MI16N and GL15A with the proximity of white mustard seedlings. The lowest OAP (from 0.1 to 0.3) is for the Szegedi 1023 variety, followed by the PL 16 variety with OAP from 0.5 to 0.6. Local varieties of technical broom PL 16, Mi16N and Szegedi 1023 variety have allelopathic potential, as they have not shown a statistically inhibitory effect on white mustard. These genotypes can be used as future selection program components.

Keywords: germination; interference; seedling growth; Sinapis alba; Sorghum vulgare var. technicum

Date published: 2018-11-02