An integrated genetic linkage map for silkworms with three parental combinations and its application to the mapping of single genes and QTL

Table 3 Putative major QTL and their genetic effects on whole cocoon weight and related traits from BC1M of JL (100 replicates)

Trait	QTL	Chr.¹	Position (cM)	LOD²	Additive effect	r² (%)	Power ³ (%)
Cocoon weight	Q1	1	41.81	15.49	0.35	29.38	100
		21	12.01	2.68	-0.18	6.68	7
	Q2	23	32.01	2.94	0.14	5.19	28
	Q3-1⁴	23	41.61	3.15	0.15	5.54	28
Cocoon shell weight	Q1	1	41.81	14.85	0.05	27.75	92
		22	18.01	3.31	0.03	8.71	6
	Q4	23	51.61	3.30	0.02	5.23	49
Cocoon shell ratio	Q5	18	6.01	2.77	1.21	6.54	96
	Q6	19	2.01	3.89	1.36	8.28	100
Pupal weight	Q1	1	41.81	14.64	0.30	27.96	100
	Q2	23	32.01	2.91	0.12	5.23	29
	Q3-2⁴	23	39.61	3.03	0.12	5.27	29

1 Chromosome
2 The thresholds of LOD for CW, CSW, CSR, and PW were 2.67, 2.69, 2.54, and 2.78, respectively.
3 The statistical power represents the detected number of LOD values that were > 2 in 100 random replicates by multi-marker joint analysis.
4 Q3-1 possesses an extremely similar LOD value (LOD = 3.02) for PW to Q3-2. In addition, their similar effects (r² of 13.95 and 13.94%) and close positions (2 cM) indicate that they may share the same region.

ISSN: 1471-2164