| | Days to heading, spring, Laurie95 |
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|  | Laurie DA et al. (1995) RFLP mapping of five major genes and eight quantitative trait loci controlling flowering time in a winter x spring barley (Hordeum vulgare L.) cross. Genome 38:575-585. |
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| | A spring-sown field study. ('Days to heading, autumn, Laurie95' describes a companion study sown in the autumn.) |
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| | Flowering time (days to heading) was recorded when half the plants in the row had half the ear emerged from the flag leaf on the leading tiller. Day 1 was the day of ear emergence in the earliest flowering line. |
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| | Igri (barley) | winter cultivar | | Triumph (barley) | spring cultivar |
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| | Doubled haploids (DH), produced by Hordeum bulbosum method, from F`1` of Igri x Triumph |
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| | Putative QTL were identified in a preliminary glasshouse experiment. Size of the effect of each putative QTL was estimated from groups of 10-15 individuals with nonrecombinant marker genotypes for chromosomal sections flanking that QTL. A model for additive gene effects was fitted to the field experiment using a least squares generation means approach. The standard error of the size of the effect was used in a t-test to test for significance of each QTL. A Chi-square test was used to test the goodness-of-fit of the additive model incorporating all significant QTL. All pairs of QTL were then tested for significant interactions. |
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| | R-squared is the proportion of the variance among lines that was explained by a multiple regression model containing all significant QTL and two-way interactions. |
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