Selection for soybean seed yield with molecular markers

Abstract

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Family and Line Selection for Seed Yield of Soybean

“…The coefficient was 0.30 for AX11056, 0.43 for AX11063, 0.38 for AX11080, and 0.53 for AX11104. Byrum (1999) reported nonsignificant ( P > 0.05) phenotypic correlation coefficients of 0.10, 0.25, and 0.37 between PRYT and replicated plots for three populations. Hegstad et al (1999) reported coefficients ranging from −0.04 to 0.41 with a mean of 0.17 between PRYT and replicated tests for five populations.…”

“…A breeder would like to advance the least percentage of lines from the initial evaluation to subsequent yield tests in multiple environments. The percentage of lines that had to be selected in the PRYT to retain the highest yielding line in the replicated tests ranged from 2 to 35% for the four populations, with an average of 14% (Table 4) Byrum (1999) reported that the selection intensities required in the PRYT to retain the highest yielding line in three populations were 16, 38, and 61%. In our study, an average selection intensity of only 3% was required in the PRYT to retain one of the 10 highest yielding lines in the replicated tests, but a mean selection intensity of 61% was required to retain all of the top 10 lines.…”

“…Hegstad et al (1999) concluded that PRYT would be effective for identification of elite soybean lines. Byrum (1999) reported positive, but nonsignificant ( P > 0.05), correlations between PRYT and replicated tests. The objective of this study was to compare the reliability of selection for seed yield in unreplicated plots by the family and line methods.…”

Family and individual line selection for palmitate, saturates, linolenate and seed yield of soybean

“…Hegstad et al (1999) concluded that PRYT are effective for identification of elite soybean lines with high yield potential. Byrum (1999) proposed the use of molecular markers to increase the effectiveness of identifying high-yielding lines from PRYT. He concluded that the use of molecular markers alone or in combination with PRYT would be useful for selecting among lines for seed yield in a cultivar development program.…”