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Use of the biogenic inductor from botrytis allii to prevent onion losses during storage

Use of the biogenic inductor from botrytis allii to prevent onion losses during storage

Fiziologiya i Biokhimiya Kul'turnykh Rastenii 23(4): 371-375

The effect of two-week pre-harvest treatment of onion with biotic inductor from mycellium of Botrytis allii has been studied. Treatment of the green onion top with mycelium water extracts in concentrations of 0.01-0.03% two weeks before harvesting decreases the disease development and suppresses bulb sprouting after 5 months of storage. Inhibition of bulb sprouting correlates with a higher content of abscisic acid in the onion tissues. An increase of the disease resistance of bulbs by biogenic inductor may be connected with the accumulation of onion phytoalexins-tsibulins 1d and 2d. Application of such inductors permits decreasing the disease spreading not polluting environment and not disturbing ecological balance of the biosphere.

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