Tropical Plant Pathology (2010) 35, 253-257

Cândida R.J. de Farias, Emerson M. Del Ponte, Carla L. Corrêa, Ana Paula Afonso and Carlos R. Pierobom (2010)
Infecção de sementes de trigo com Bipolaris sorokiniana pela técnica de restrição hídrica
[Infection of wheat seeds by Bipolaris sorokoniana using a water restriction technique]
Tropical Plant Pathology 35 (4), 253-257
Abstract: Seed inoculation with pathogenic fungi using the water restriction technique is relatively recent. This study aimed to verify the effect of osmotic potentials (-0.4, -0.6 and -0.8 MPa) of PDA substrate modified by the amendment of sucrose in interaction with the period of exposure (48, 72 and 96 h) of wheat seeds to colonies of Bipolaris sorokiniana. Infection efficiency and inhibition of seed germination during and after treatment were the variables analyzed. The results of this study show that an exposure period longer than 48 hours to the fungal colonies did not inhibit full germination of the seeds. The germination rate increased linearly as the exposure period to the fungal colony was increased. Infection efficiency was not affected by osmotic potential and exposure time, varying from 0.53 to 0.92. However, seed germination was significantly reduced after 48 hours of exposure to the fungal colonies.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bipolaris sorokiniana	Wheat (Triticum)