Original scientific paper

TESTING IMAIZE INBRED LINES FOR RESISTANCE TO DISEASES RELEVANT IN SEED PRODUCTION

Branko Palaveršić ; Bc institut za oplemenjivanje i proizvodnju bilja d.d. Zagreb
Josip Brekalo ; Bc institut za oplemenjivanje i proizvodnju bilja d.d. Zagreb
Janko Sever ; Bc institut za oplemenjivanje i proizvodnju bilja d.d. Zagreb
Ivan Stilinović ; Bc institut za oplemenjivanje i proizvodnju bilja d.d. Zagreb
Tihomir Bančić ; Bc institut za oplemenjivanje i proizvodnju bilja d.d. Zagreb

Abstract

During 13 years of obligatory sanitary field inspection, occurrence and severity of diseases in seed fields with Bc hybrids was monitored in Croatia. For comparison, maize inbred lines were tested for disease resistance under conditions of artificial infection in Rugvica. Bipoluris zeicola (sin. Helminthosporium carbonum) was found to be an important disease as compared to Exserohilum turcicum (sin. Helminthosporium turcicam), while Kabatiella zeae and Colletotrichum graminicola were found mostly in traces. The highest severity of B. zeicola was found in seed parents Bc222, Bc 665 x Bc 177, and Bc 224 x Bc22,which agrees with high susceptibility of the lines in artificial infection. Comparetively high severity of E. turcicum was found in seed parents Bc 190 x Bc 189, and Bc 665 x Bc 177, developed by crossing susceptible lines and it was confirmed under conditions of artificial infection. In seed production, the highest severity of fusarium ear rot was recorded in seed parents Bc 502 x Bc 24, Bc 665 x Bc 117, and Bc 176 x Bc 70139. Under conditions of artificial ear infection with Fusarium graminearum, the line Bc 177 was susceptible, Bc 665 moderately susceptible, while under conditions of artificial infection with Fusarium moniliforme, the lines Bc 546 and Bc 172 were susceptible and the line Bc 24 was moderately susceptible. The applied methods of artificial infection proved reliable in estimating line susceptibility in seed production.

Keywords

Hrčak ID:

167857

URI

https://hrcak.srce.hr/167857

Publication date:

21.6.1995.

Article data in other languages: croatian

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