Erdem GÜLÜMSER, Medine ÇOPUR DOĞRUSÖZ, Uğur BAŞARAN, Hanife MUT

Using smoke solutions in grass pea (Lathyrus sativus L.) to improve germination and seedling growth and reduce toxic compound ODAP

The effects of smoke solutions derived from wheat straw on the germination, seedling growth characteristics, and biochemicalcontent of grass pea (Lathyrus sativus L.) were examined in this study. The smoke solutions were applied to petri and pot media atdifferent concentrations. Both experiments were conducted in a randomized plot design with 3 replications. In the pot experiments,the smoke solutions were applied through the initial irrigation at 5 different concentrations (1%, 5%, 10%, 20%, and 40%) while 6concentrations were used for petri experiments (0.5%, 1%, 2%, 4%, 8%, 10%) and results were compared to a control (distilled water).The smoke solutions increased root and shoot growth but decreased the germination rate and speed of grass pea in both media. Ingeneral, there were positive outcomes for the investigated traits with moderate concentrations of solution, but negative outcomes withlow and high concentrations. The smoke solution treatments improved the shoot dry weighs, K, and protein contents, but decreased theacid detergent fiber and neutral detergent fiber contents and the toxic component oxalyldiaminopropionic acid (ODAP). Accordingly,the smoke solutions stimulated the development of grass pea and promising outcomes were achieved in terms of high protein and lowODAP contents, which are the main targets of grass pea breeding studies. It was concluded, based on the present findings, that smokesolutions derived from wheat straw could be used as an environmentally friendly practice in grass pea culture to increase yield andquality. However, it should be kept in mind that concentration was a critical issue for ensuring the expected outcomes.

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