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. 2008 Jan;178(1):489–511. doi: 10.1534/genetics.107.077297

TABLE 4.

Features of QTL for grain yield, heading date, and plant height on a single-environment basis

Lbn-i05a Syr-i04 Itl-r04 Syr-i05 Itl-r05 Syr-r05 Syr-r04 Spn1-r04 Mrc-i05 Tns-i04 Lbn-r05 Lbn-i04 Tns-r04 Lbn-r04 Spn2-r05 Mrc-r05
58.8b 57.4 57.3 56.8 54.0 43.1 41.8 34.8 30.9 29.6 28.1 26.5 17.6 16.7 15.3 5.6
a. Grain yield
Total QTL no. 2 3 3 3 3 0 3 3 1 2 0 0 3 1 2 0
QYld.idw-2B
    LOD (CIM) 4.1 6.3 3.2 3.5 3.2 7.5 6.9 (2.6)
    R2 (MIM) 9.9 12.4 8.7 7.2 5.3 11.3 11.7 3.5
    ac (MIM) 0.52 1.70 1.28 0.72 0.39 1.55 0.38 0.48
    a (%)d 0.8 2.9 2.3 1.3 0.9 4.4 1.3 2.7
QYld.idw-3B
    LOD 3.1 7.5 9.6 3.4 3.5 (2.5) 3.3
    R2 4.8 12.3 18.1 5.4 7.5 5.1 7.5
    a −0.35 −1.62 −1.73 −0.35 −1.24 −0.24 −0.13
    a (%) 5.9 2.8 3.0 0.9 3.6 0.8 0.9
QYld.idw-2B × QYld.idw-3B
    R2 6.6 16.7 7.6 2.4 5.7
    a × ae 0.43 1.91 1.22 0.78 0.28
    a × a (%) 7.3 3.3 2.1 2..2 1.0
Multiple R2 (MIM) 21.3 31.1 44.7 37.9 17.0 — 14.8 26.2 6.5 22.5 — — 11.7 4.7 13.7
b. Heading date
Total QTL no. 3 2 4 2 3 4 5 4 4 3 4 6 3 3 4 4
QHd.idw-1B
    LOD (CIM) 4.7 3.3
    R2 (MIM) 5.4 4.1
    ac (MIM) 0.4 0.3
QHd.idw-2A.1
    LOD 13.8 8.7
    R2 35.3 21.9
    a 2.7 1.4
QHd.idw-2A.2
    LOD 10.9 11.5 18.7 9.5 15.5 6.1 19.2 15.2 8.6 (2.8) 17.5 3.2 13.8
    R2 18.1 17.8 34.7 14.7 24.2 10.0 28.4 22.8 12.5 3.7 22.4 5.3 17.4
    a 0.7 0.8 1.3 0.7 1.1 0.5 1.0 1.1 0.6 0.3 1.1 0.3 0.6
QHd.idw-2B.1
    LOD 3.7 4.1 3.3
    R2 3.2 4.7 5.1
    a −0.5 −0.4 −0.3
QHd.idw-2B.2
    LOD 8.5 5.5 4.2 3.5 7.5 6.9 3.6 5.5 7.3 3.4 5.5 6.2 7.5 3.1
    R2 12.3 8.7 7.0 6.3 11.3 8.7 6.3 8.2 13.0 1.8 5.5 12.8 10.2 4.2
    a 0.5 0.6 0.5 0.5 0.5 0.6 0.6 1.2 0.6 0.2 0.6 0.5 0.5 0.6
QHd.idw-2B.3
    LOD 7.7 4.2 3.2
    R2 15.2 6.5 4.1
    a −0.6 −0.4 −0.3
QHd.idw-3B
    LOD 7.3 4.3
    R2 13.3 9.3
    a 0.5 0.4
QHd.idw-7B
    LOD 4.6 5.3 8.5 5.1 5.0 5.0 6.9 4.4 5.4 7.5 11.0 7.8
    R2 13.9 18.6 16.7 11.4 13.7 12.5 14.3 6.5 14.2 16.5 24.3 12.8
    a −0.6 −0.9 −0.7 −0.7 −0.6 −0.7 −0.9 −1.1 −0.6 −0.9 −0.7 −1.1
QHd.idw-2A.2 × QHd.idw-7B
    R2 4.5 2.7
    a × ae 0.5 0.4
QHd.idw-2B.3 × QHd.idw-3B
    R2 12.8 11.5
    a × a 0.5 0.5
QHd.idw-2A.2 × QHd.idw-3B
    R2 2.1
    a × a 0.3
Multiple R2 (MIM) 44.4 26.5 64.9 41.3 35.3 47.2 45.8 55.0 47.1 50.0 44.4 46.0 47.1 22.2 56.1 41.6
c. Plant height
Total QTL no. 6 0 4 6 4 3 4 7 0 6 0 3 3 4 1 1
QPht.idw-1B.1
    LOD (CIM) 3.8 7.1 8.1 5.5 4.0 5.8 3.4
    R2 (MIM) 4.7 9.9 12.0 11.3 5.9 7.8 6.3
    ac (MIM) 0.9 2.3 2.3 2.7 1.4 1.4 0.3
QPht.idw-1B.2
    LOD 3.5 (2.8) (2.5)
    R2 5.8 5.7 4.1
    a 1.1 1.7 0.9
QPht.idw-2B
    LOD 3.7 5.7 5.2 (2.7) 3.3 6.2 4.5 8.4 (2.5)
    R2 10.7 12.8 8.7 7.5 6.2 12.0 6.9 14.8 4.4
    a 1.5 2.1 2.1 1.3 1.7 1.9 1.1 2.4 0.4
QPht.idw-3A
    LOD 4.8 4.5 3.0 3.0 3.2 3.0 3.8 5.5 4.7 4.8
    R2 7.3 5.6 3.5 3.9 3.2 3.8 4.5 6.2 7.0 10.6
    a −1.3 −1.2 −1.7 −1.4 −0.8 −1.3 −1.3 −0.9 −0.4 −0.4
QPht.idw-3B
    LOD 4.9 4.2 11.6 6.9 (2.5) 4.3 6.5 5.7 4.5 9.3 4.5
    R2 7.3 11.2 14.1 10.9 4.3 7.0 10.1 7.9 8.5 16.5 4.9
    a −1.2 −1.8 −2.8 −2.2 −1.7 −1.2 −2.1 −1.5 −1.2 −2.4 −0.3
QPht.idw-4B
    LOD 2.8 (2.8)
    R2 4.1 2.7
    a 0.9 1.1
QPht.idw-7A
    LOD 3.1 5.9 3.1 3.1 (2.6) 3.4
    R2 3.7 10.3 5.7 7.1 6.1 4.9
    a 0.8 2.4 1.7 2.1 1.6 1.1
QPht.idw-2B × QPht.idw-3B
    R2 4.8 15.2 5.4 6.5 3.1 9.6 7.1 8.2
    a × ae 1.0 2.3 1.9 1.2 1.3 1.8 1.1 1.8
QPht.idw-2B × QPht.idw-7A
    R2 4.7 2.1
    a × a 1.0 1.2
QPht.idw-3B × QPht.idw-7A
    R2 1.4 1.7
    a × a 1.2 1.1
Multiple R2 (MIM) 47.4 — 50.6 60.0 34.2 22.7 26.8 41.6 — 50.8 — 28.6 44.2 22.2 10.6 6.3

Main features of the QTL for grain yield, heading date, and plant height detected in the 16 environments are listed in decreasing order according to the mean RIL grain yield values. The total number of QTL found in each environment (CIM, LOD > 2.5) and the corresponding multiple R2 obtained in the MIM model are reported. For each QTL with significant effect in at least two environments (QTL peaks located within 20 cM) the corresponding LOD value (from CIM analysis) is reported. The R2 and the additive and epistatic effects (as from the MIM analysis) are also reported. The LOD values of QTL with LOD peaks between 2.5 and 2.9 are included in parentheses.

a

Environments listed according to the decreasing mean yield value of the RILs.

b

Mean grain yield data (q ha−1) of each environment.

c

Additive effect for grain yield (q ha−1), heading date (days), and plant height (cm) computed as half of the difference between the mean phenotypic values of the RILs homozygous for the Svevo and Kofa alleles [(Svevo − Kofa)/2] in the multiple-interval mapping analysis.

d

Additive effect expressed as percentage of the mean grain yield of the RILs in the specific environment.

e

Additive-by-additive epistatic effect as computed in the multiple-interval-mapping analysis.