Rice Genetics IV - IRRI books - International Rice Research Institute

Table 9. Main-effect QTLs affecting plant elongation and submergence tolerance in the IR74/Jalmagna recombinant inbred population.QTL Trait a Chromosome Marker Stress under A b G 2 Stress under A G 2 Toleranceclean water LOD muddy water LOD alleleQPh1a IPH 1 sd-1 10.1 –3.8 4.1 –3.2QPh1b IPH 1 P3M7-6 6.6 –3.5QPh3 IPH 3 P2M1-12 4.6 3.4QIne1 PHI 1 sd-1 10.5 –13.6 21.5 –23.2 23.2 JalmagnaQIne1 INI 7.0 –8.7 18.9 –18.2QIne2 PHI 2 P2M9-8 7.4 –14.2INI 5.1 –9.6QIne4 PHI 4 P3M1-5 12.6 21.8INI 10.7 21.8LLI 6.2 –6.2 19.7 JalmagnaQLe6 LLI 6 P2M5-17 2.5 4.9QLe7 LLI 7 P1M10-5 3.7 –3.5 5.2 JalmagnaQSubt3 ST 3 P1M3-5 15.7 IR74QSubt5 ST 5 P1M6-9 7.2 9.4 JalmagnaQSubt8 ST 8 P3M7-3 6.9 11.9 JalmagnaSub1 ST 9 P2M1-15 5.1 58.3 IR74QSubt9 ST 9 P2M5-18 6.6 JalmagnaQSubt10 ST 10 P3M1-3 13.0 Jalmagnaa IPH is initial plant height (before stress), PHI, INI, LLI, and ST are plant height increment, internode increment, leaf length increment, and submergence toleranceafter stress. G 2 is the likelihood ratio chi-square statistic associated with submergence tolerance. The significant values of G 2 at P = 0.05, 0.01, and 0.001 are3.79, 6.63, and 11.60, respectively. b A = additive QTL effect.Source: Sripongpangkul et al (2000).164 Zhi-Kang Li