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The inbred EA2087 had significantly shorter DLIG, lighter COLOR, and higher MORTALITY than F7 (Table 5).
The [F.sub.1], EA2087 x F7 was intermediate to EA2087 and F7 for DLIG and had lower MORTALITY than EA2087.
([double dagger]) DEMER, days from planting to 50% emergence; SCORE, emergence score; EMERG, percentage emergence; COLOR, 9 = dark green to 1 = pale green; VIGOR, 1 = vigorous to 5 = weak; and DLIG, days from 50% emergence to 50% of the plants having a ligule on the first leaf.
The [F.sub.2] generations were above the corresponding [F.sub.1] hybrids and both parents for SCORE and similar to the [F.sub.1] hybrids for DLIG. For COLOR, the [F.sub.2] generations were between [P.sub.1] and [P.sub.2] and above the [F.sub.1] when the inbred F7 was involved, as expected given the presence of the glossy phenotype in the [F.sub.2].
For EA2087 x F7, the simple generation means [chi square] 2 test was not significant for DEMER, DLIG, and EMERG, meaning that the additive-dominance model was satisfactory, though the contrast B significantly deviated from zero for the first two traits (Table 6).
For the cross EA2087 x F7 additive effects were significant for DLIG, COLOR, VIGOR, and MORTALITY, dominance effects were significant for EMERG and COLOR, and additive x additive effects were significant for SCORE and COLOR (Table 6).
For EA2087 x H104W, additive effects were significant for DEMER, EMERG, COLOR, VIGOR, and MORTALITY; dominance effects were significant for DEMER, DLIG, COLOR, VIGOR, and MORTALITY; additive x dominance effects were significant for SCORE and EMERG; and additive x additive and dominance x dominance effects were significant for EMERG.
Additive and dominance effects were significant for DEMER, DLIG, and MORTALITY depending on the hybrid, but no significant epistatic effects were detected.
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