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An Intergenomic Reciprocal Translocation Associated with Oat Winter Hardiness Component Traits

^a Dep. of Crop Science, Box 7629, North Carolina State Univ., Raleigh, NC 27695-7629
^b USDA-ARS and North Carolina State Univ., 840 Method Rd. Unit 3, Raleigh, NC 27695
^c Dep. of Agronomy and Horticulture, Brigham Young Univ., 275 WIDB, Provo, UT 84602
^d USDA-ARS and North Carolina State Univ., 1419 Gardner Hall, Raleigh, NC 27695

View larger version (115K): [in this window] [in a new window]   Figure 1. C-banded somatic chromosomes from chromosome 7C17 nullisomic oat line. Chromosomes are labeled with their number; 17* identifies chromosome 177C.

View larger version (16K): [in this window] [in a new window]   Figure 2. Frequency distribution of crown freezing tolerance line means for homogeneous translocation classes. A population of 116 oat recombinant inbred lines and their parents, non-winter-hardy ‘Fulghum’ and winter-hardy ‘Norline’, were evaluated for crown freezing tolerance on a scale from 0 to 10, where 0 = complete plant death and 10 = no freezing damage.

View larger version (17K): [in this window] [in a new window]   Figure 3. Frequency distribution of winter field survival line means for homogeneous translocation classes. A population of 120 oat recombinant inbred lines and their parents, non-winter-hardy ‘Fulghum’ and winter-hardy ‘Norline’, were evaluated for winter field survival in three environments.

View larger version (17K): [in this window] [in a new window]   Figure 4. Scatter plot and regression of winter field survival vs. crown freezing tolerance for a population of 120 oat recombinant inbred lines and their parents, non-winter-hardy ‘Fulghum’ and winter-hardy ‘Norline’; WFS = winter field survival, CFT = crown freezing tolerance.