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COMBINING ABILITY OF SOME NEW Bc MAIZE INBREDS

Ivica Buhiniček ; Poljoprivredni institut Osijek, Osijek, Hrvatska
Zdravko Kozić ; Bc Institut za oplemenjivanje i proizvodnju bilja d.d., Zagreb, Hrvatska
Branko Palaveršić ; Bc Institut za oplemenjivanje i proizvodnju bilja d.d., Zagreb, Hrvatska
Karlo Stastny ; Bc Institut za oplemenjivanje i proizvodnju bilja d.d., Zagreb, Hrvatska
Branko Tomičić ; Bc Institut za oplemenjivanje i proizvodnju bilja d.d., Zagreb, Hrvatska
Antun Vragolović ; Bc Institut za oplemenjivanje i proizvodnju bilja d.d., Zagreb, Hrvatska

Sažetak

Combining ability of seven related Bc maize inbreds, crossed with four testers (Bc252, F2, Bc16881, Rx370-811) was tested in two year field trials, at two locations. GCA effects of the lines were significant for grain moisture in all four trials, for grain yield in two trials, and for lodged and broken plants in three trials. The line Bc21491 had the highest positive GCA effects for grain yield. However, it was latest, with the highest positive GCA effect for harvest grain moisture. The lines Bc01/84, Bc706-43, and Bc24331 proved to be late with negative GCA effect for harvest grain moisture. Based on GCA effects, the lines Bc24331, Bc01/84 and Bc706-9 proved as most resistant to breakage. The best general combiners for number of lodged plants were the lines Bc706-43, and Bc706 and Bc24331. Specific combining ability was omst significant for grain yield. In three trials, SCA effects were significant. The crosses Bc24331 x Bc16881 ,Bc24331 x Rx370-811 , Bc406-87 x F2, and Bc21491 x Bc252 were distinguished by their positive SCA effects for grain yield. Along with the early hybrid Bc706-9 x Bc252, they are economically the most valuable combinations. The applied line x tester scheme proved to be effective in practical maize breeding.

Ključne riječi

Hrčak ID:

168374

URI

https://hrcak.srce.hr/168374

Datum izdavanja:

18.5.1997.

Podaci na drugim jezicima: hrvatski

Posjeta: 869 *