Table 2. Chromosome locations of root-knot nematode (RKN) resistance determinants in cowpea accession FN-2-9-04, mapped using F${}_2$ and F${}_{2:3}$ populations of the cross CB46-Null x FN-2-9-04 and the F${}_2$ population of the cross CB46 x FN-2-9-04.

Pop a	Trait	RKN	Vu	Position	Flanking markers	-logp	PVE (%)	A	D/A
			1	34.4	2..04038-2..26991	5.4	33.0	−1.3	0.5
F${}_{2:3}$	RG	Avr-M.i	4	24.7-27.6	2..44685-2..10583	20	73.3	−2.0	0.5
F${}_{2:3}$	RG	M.j	1	27.7-42.0	2..47796-1.0027	20	95.1	−2.3	0.3
F${}_2$	RG	M.j	1	30.3-38.7	2..32677-2..19840	20	47.3	−2.8	0.4
${\text{F}}_2^b$	RG	M.j	1	19.2-72.9	2..53036-2..18359	20	65.9	2.7	0.8
F${}_2$	EM	M.j	1	31.5-36.9	2..21671-2..07103	10.9	34.1	−17.0	0.5
${\text{F}}_2^b$	EM	M.j	1	47.1-52.1	2..21671-2..12209	8.8	24.7	−16.4	0.4

^aPop = mapping population; the F${}_{2:3}$ were phenotyped in the field whereas the F${}_2$ were phenotyped in greenhouse and growth chamber (seedling-growth pouches) screens; RG = root-galling; EM = egg-masses per root system; Avr-M.i = avirulent M. incognita isolate Beltran; M.j = M. javanica;

^bmapping population CB46 x FN-2-9-04 phenotyped for RG and EM; Vu = cowpea chromosome pseudomolecule numbering (Lonardi et al. 2017); -logp = level of significance of the detected QTL (P < 0.05); PVE = percent of total phenotypic variation explained; A = additive effect of favorable alleles from the resistant parent (negative values indicate the extent of average reduction in RG or EM production due to the presence of favorable alleles); D = dominance effect due to substitution of favorable allele; and D/A = degree of dominance.