Species Differences in the Susceptibility to Autotoxicity among Leaf Vegetables Grown in Hydroponics.

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  • 葉菜類の養液栽培における自家中毒の発生とその種間差異
  • ヨウサイルイ ノ ヨウエキ サイバイ ニ オケル ジカチュウドク ノ ハッセイ ト ソノ シュカン サイ

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Abstract

Species differences to susceptibility to autotoxicity among leaf vegetables grown in hydroponics were studied. Shoot fresh weights of parsley, celery, mitsuba, curled lettuce, head lettuce, edible burdock, garland chrysanthemum, pak-choi and kale cultured in recycled (non-renewed) nutrient solution with and without the addition of activated charcoal to the nutrient solution was compared. Among the species, parsley suffered the most severe growth inhibition in the absence of charcoal, whereas komatsuna, chinese cabbage, radish, takana, welsh onion, perilla and spinach were unaffected. Thus, all species in Umbellifeae, Compositae and some species of Brassicaceae showed autotoxicity.

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