Genetic basis of heterosis for yield and yield components explored by QTL mapping across four genetic populations in upland cotton

Table 4 Gene actions of QTL identified for yield and yield components by CIM^a across four environments

Traits^b	IF₂population				HSBCF₁ population				MARBCF₁ population
Traits^b	A^c	PD/D^c	OD^c	Uncertain^c	A	PD/D	OD	Uncertain	A	PD/D	OD	Uncertain
FB	0	3	16	0	2	0	10	0	6	2	3	0
BN	0	8	7	0	6	1	6	0	7	0	7	0
BW	0	3	12	0	10	0	9	0	11	0	4	0
LP	0	5	17	2	7	0	7	0	9	1	8	0
SY	0	2	6	0	5	0	19	0	5	1	11	0
LY	0	4	9	0	4	1	12	0	9	2	6	0

^aCIM composite interval mapping method
^bFB fruit branches per plant, BN boll numbers per plant, BW boll weight, LP lint percentage, SY seed cotton yield; LY: lint yield
^cA additive effect, PD/D partial dominant or dominant effect, OD over-dominant effect; Uncertain: QTL with different gene action in different environments

ISSN: 1471-2164