Resumen

VINE L, Claudia; GUERRERO C, Jaime  y  BENSCH T, Emma. Allelopathic effect of foliar aqueous extract of ten wild tipe wheat (Triticum aestivum L.) on Rumex acetosella L.. Idesia [online]. 2013, vol.31, n.3, pp.77-87. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292013000300011.

The objectives of this study was to determine the allelopathic effect of foliar aqueous extracts of ten ecotypes of Triticum aestivum L. in two concentrations about germination and growth of the weed Rumex acetosella L. and classify them under effectiveness. The experimental design was totally randomized design with three replications. We assessed germination percentage, seedling height (cm), root length (cm), fresh weight of foliage and root (g) and dry weight of leaves and roots (g). The results were evaluated 15 days after planting and were subjected to a Variance Analysis and comparison of means with the minimum significance test (LSD) (P ≤ 0,05). R. acetosella weed had a differential allelopathic sensitivity to ten wheat ecotypes evaluated. Hawever, this sensitivity was not significant in all parameters. Most wheat ecotypes had an inhibitor allelopathic effect on the growth. Effect was not always directly proportional to the concentration of aqueous extract tested. Seed germination showed no inhibitory allelopathic effect for wheat ecotypes. The growth seedling height and radicular length was sensitive to the inhibitory allelopathic effect just like for the fresh weight of foliage and root fresh weight. Regarding the allelopathic effect of the ecotypes to both concentrations, the more homogeneous results were registered for root length and fresh weight of roots. The ranking of wheat ecotypes according growth inhibition effectiveness to the R. acetosella were: Colmillo de perro, Varón and NN7, followed NN3, NN8 and NN2; unregistered inhibition are located Trigo cabada and NN4.

Palabras clave : wild type wheat; aqueous extracts; Triticum aestivum; allelopathy.

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