Agronomy journal, Vol. 40 No. 4, 1978.
Original scientific paper
BREEDING METHOD USED FOR MAINTAINING VARIETAL PURITY AND PRODUCTION OF BASIC SEED IN WHEAT
Josip Potočanec
; Institut za oplemenjivanje i proizvodnju bilja, Zagreb
Abstract
Results of studies performed on reselections of ZLATNA DOLINA and SANJA in order to find a level of homozygosis, resp. variability of the selected linies in F₆ generations - have shown the following characters: 1) that ,nether line 5994/66, i. e. Zlatna Dolina, nor line 5996/66, i. e. Sanja werw genetically uniform in yield; 2) also,there was no uniformity even in characters of very high heritability such as resistance to P. graminis and 1000 - grain weight. Therefore, by individual reselection method, used both to chek OriginaIity of the selected material and to produce foundation seed, it was possible to isolate reselections in the Original type, with increased as indicated in Tables 3 and 4. Results further refer one to conclude that varieties generally developed by selection ,in „early generations“ usually aren't genetically uniform in characters being inherited polygenically, and specially in those traits which are complex in their nature. Thus, maintaining selection of the varietal source material, applied at maintenance of variety and at production of basic seed, should have the twofold aim: 1) maintenance of varietal identity, and 2) improvement of variety in some characters. Result of these ,studios indicate that applying "lndividual reselection method " VARIETY MIGHT BE MAINTAINED IN THE Original morphological type - but improved in some characters.
Keywords
Hrčak ID:
165651
URI
Publication date:
20.9.1978.
Visits: 669 *