Further studies on the interaction between wheat mosaic streak virus and Helminthosporium sativum.
When wheat plants were inoculated first with WSMV and then with H. sativum [Cochliobolus sativus] there was a marked reduction in growth, manifested by fewer tillers, fewer fertile flowers and stunting of plants. The wheat cv. HD-1927 was affected more than the other cvs. tested. There was a considerable decrease in yield/spike, yield/plant and 1000 kernel wt.<new para>ADDITIONAL ABSTRACT:<new para>In four wheat varieties inoculated first with the virus and then with H. sativum (Cochliobolus sativus), the reductions in growth and yield were greater than those caused by either pathogen alone. The effect was most marked in HD1927, which is resistant to C. sativus.