Open AccessInbred lines of different cycles of selection as donors of favourable alleles for the improvement of F1 maize hybrids
Author(s) -
Mile Sečanski,
Goran Todorović,
Gordana Šurlan-Momirović,
Tomislav Živanović,
Milosav Babić
Publication year - 2010
Publication title -
genetika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 15
eISSN - 1820-6069
pISSN - 0534-0012
DOI - 10.2298/gensr1002339s
Subject(s) - heterosis , hybrid , allele , biology , grain yield , selection (genetic algorithm) , inbred strain , population , trait , yield (engineering) , zea mays , agronomy , microbiology and biotechnology , genetics , veterinary medicine , mathematics , gene , demography , materials science , artificial intelligence , sociology , computer science , metallurgy , programming language , medicine
Eight BSSS and BSCB1 inbred lines of different cycles of selection were studied with the aim to evaluate which inbreds had the highest relative values of favourable alleles for the improvement of the grain yield trait in an elite single cross maize hybrid. Based on estimated parameters μG, UBND, PTC and NI it was determined that the inbreds B73 (C5) and B84 (C7), originating form the synthetic population BSSS had highest number of favourable alleles for the improvement of the grain yield. Both these inbreds belong to the later cycles of recurrent selections and proved to be better donors of favourable alleles than inbreds belonging to the earlier cycles of selection. The rank correlations of used parameters were positive and highly significant, while the highest values of correlations for yield were determined between μG and NI, that is PTC and NI. The highest grain yield was recorded in the hybrid ZPL2 x B73, which also had the highest value of heterosis (174.9%) in the trial for estimation of loci relative values