TABLE 3

Partitioning the two-locus genotypic values in a population derived from a cross of Reventador maize × parviglumis teosinte

Genic effects
Locus UMC107Locus BV302Epistasis between UMC107-BV302
Traitaβ1β2β3β4β5β6β7β8ε
CUPL1.333−0.0041.4790.1750.1190.2300.350−0.295−0.007
1.3250.0001.4750.2000.1000.2500.350−0.3000.044
CUPR−1.7560.229−1.390−0.0190.2460.066−0.0530.246−0.004
−1.7750.225−1.375−0.0250.2500.050−0.0500.250−0.094
DISA−1.040−0.058−0.8800.1460.164−0.010−0.1760.221−0.004
−1.038−0.063−0.8630.1380.175−0.025−0.1750.225−0.053
INNO−0.246−0.078−0.2710.0820.015−0.100−0.1780.3690.006
−0.238−0.088−0.2630.0630.025−0.125−0.1750.375−0.003
LBIL14.339−4.32919.525−5.2003.213−19.3973.951−17.7640.321
15.100−3.92519.475−5.6252.700−18.3003.750−18.0501.204
LIBN2.158−0.669−0.5360.326−0.447−0.571−0.8561.1810.032
2.225−0.700−0.5250.250−0.400−0.650−0.8501.2000.178
PEDS−1.030−0.684−1.138−1.3891.4061.7911.2141.476−0.024
−1.050−0.750−1.125−1.3501.3501.7001.2501.500−0.004
STAM32.910−0.1412.3035.0263.868−8.462−7.81511.5640.226
33.125−0.3752.8754.1254.250−9.250−7.75011.7501.920
YOKE−1.024−0.103−0.913−0.1520.4770.050−0.3460.000−0.026
−1.025−0.100−0.875−0.1500.5000.050−0.3500.000−0.064
  • a CUPL, average length of cupules (internodes) in the inflorescence (in millimeters); CUPR, number of cupules in a single rank of the ear; DISA, tendency of ear to shatter (1–5 scale), 1 = 100% disarticulating, 5 = 0% disarticulating; INNO, number of vegetative internodes in the lateral branch; LBIL, average length of vegetative internodes in the primary lateral branch (in millimeters); LIBN, number of branches in primary lateral inflorescence; PEDS, percentage of cupules lacking the pedicellate spikelet; STAM, percentage of staminate spikelets in primary lateral inflorescence; and YOKE, degree to which the fruitcases are in yoked pairs (1–5 scale). 1, 0% yoked fruitcases; 5, 100% yoked fruitcases.

  • Partitioning the genotypic values for two interacting loci, UMC107 and BV302, affecting nine morphological traits in the BC3F2 population (Teosinte-M1L × Teosinte-M3L) derived from an original cross of Reventador maize × parviglumis teosinte as described by Doebley et al. (1995) and Kao and Zeng (2002) is shown. The partitions for each trait include eight genic effects (β1 − β8) under Cockerham's model (top) and the F2-metric model (bottom) plus a residual (ε) arising from zygotic associations.