PJB-1975-16
Biochemical inhibition (allelopathy) exhibited by Italian ryegrass (lolium multiflorum L. )
HIMAYAT
HUSSAIN NAQVI and CORNELIUS H. MULLER
Abstract
Italian ryegrass (lolium multiflorum L. ) is
a common grass species in many temperate parts of the world. Laboratiort and green house experiments showed that besides toxic roots exudates , water soluble toxins are also present. The present of toxins in root exudates and in the above ground parts of Italian ryegrass was confirmed during the soil leaching, soil
mulching experiments and artificial rain drip bioassays. These toxins are capable of significant inhibition of germination and growth of avena, bromus , lactuea and trificlim tested . the possible role of these toxin producing species in agronomy , vegetational dynamics and range land ecology is discussed .
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