TABLE 4.

Variance component estimates with 95% CL limits in square parentheses for observed traits in three OFSP H₁ populations for observed traits; OFSP H₁ populations: WAE, wide adaptation and earliness (N = 9,881); NSSP, non-sweet sweetpotato (N = 3,742); and HIFE, high iron (N = 3,292); ${\mathrm{\sigma }}_F^2$, ${\mathrm{\sigma }}_{G(F)}^2$, ${\mathrm{\sigma }}_L^2$, ${\mathrm{\sigma }}_{FxL}^2$, and ${\mathrm{\sigma }}_{GxL(F)}^2$, variance components due to H₁ families, genotypes within H₁ families, locations, interaction of H₁ families by location, and interaction of genotypes within H₁ families, respectively; RYTHA, storage root yield; NCRPL, number of commercial roots per plant; FYTHA, foliage yield, BC, HI, harvest index; DM, root dry matter; BC, β-carotene; COSW, sweetness taste after cooking; STA, root starch; SUC, root sucrose; FE, root iron; NA, not available.

OFSP H1 population (harvest day)	Trait	${\mathrm{\sigma }}_F^2$	${\mathrm{\sigma }}_{G(F)}^2$	${\mathrm{\sigma }}_L^2$	${\mathrm{\sigma }}_{FxL}^2$	${\mathrm{\sigma }}_{GxL(F)}^2$
WAE (90)	RYTHA (t2ha–2)	3.1 [2.1, 4.0]	15.3 [14.3, 16.4]	174.9 [0, 656.0]	2.1 [1.1, 3.0]	<0.001 NA
	NCRPL	0.04 [0.03, 0.06]	0.22 [0.18, 0.26]	1.50 [0, 5.6]	0.03 [0.01, 0.05]	0.23 [0.19, 0.27]
	FYTHA (t2ha–2)	10.1 [8.4, 11.8]	28.5 [25.9, 31.1]	1928.7 [0, 7275.0]	<0.001 NA	<0.001 NA
	HI (%2)	28.8 [23.5, 34.0]	86.0 [79.1, 92.9]	111.9 [0, 420.4]	9.7 [6.8, 12.6]	30.3 [23.7, 37.0]
	DM (%2)	2.8 [2.4,3.2]	7.1 [6.8, 7.5]	3.5 [0, 13.3]	0.4 [0.3, 0.6]	1.4 [1.1, 1.6]
	BC (mg2 100 g–2)	44.5 [37.8, 51.3]	152.3 [145.1, 159.4]	2.7 [0, 10.1]	4.4 [2.7, 6.1]	57.6 [53.7, 61.5]
WAE (120)	RYTHA (t2ha–2)	16.1 [12.2, 20.0]	61.2 [57.3, 65.2]	691.2 [0, 2607.4]	0.3 [0, 3.8]	<0.001 NA
	NCRPL	0.04 [0.01, 0.06]	0.33 [0.27, 0.40]	2.20 [0, 8.28]	0.08 [0.05, 0.11]	0.29 [0.22, 0.37]
	FYTHA (t2ha–2)	38.2 [32.4, 44.1]	143.9 [136.6, 151.2]	2652.6 [0, 10005.7]	<0.001 NA	<0.001 NA
	HI (%2)	33.1 [27.3, 38.9]	102.5 [95.0, 109.9]	53.7 [0, 202.8]	9.7 [6.8, 12.6]	22.9 [16.1, 29.8]
	DM (%2)	3.3 [2.8, 3.7]	8.2 [7.8, 8.5]	4.1 [0, 15.4]	0.4 [0.3, 0.5]	1.0 [0.9, 1.2]
	BC (mg2 100 g–2)	45.6 [38.8, 52.3]	158.4 [151.3, 165.4]	14.4 [0, 54.4]	2.6 [1.2, 4.0]	59.0 [55.3, 62.7]
NSSP (120)	RYTHA (t2ha–2)	9.9 [2.0, 17.7]	91.3 [79.1, 103.5]	279.1 [0, 1050.7]	18.8 [11.0, 26.7]	<0.001 NA
	NCRPL	0.05 [0, 0.10]	0.45 [0.34, 0.55]	0.65 [0, 2.45]	0.11 [0.06, 0.17]	0.50 [0.38, 0.63]
	FYTHA (t2ha–2)	74.2 [45.6, 102.9]	434.1 [400.8, 467.3]	314.6 [0, 1188.1]	35.5 [13.0, 58.0]	<0.001 NA
	HI (%2)	19.0 [12.5, 25.4]	81.9 [73.9, 89.9]	406.9 [0, 1533.4]	10.0 [6.1, 13.9]	<0.001 NA
	DM (%2)	2.9 [2.2, 3.6]	9.2 [8.6, 9.9]	3.6 [0, 13.5]	0.2 [0.1, 0.4]	0.6 [0.2, 0.9]
	BC (mg2 100 g–2)	16.3 [9.9, 22.7]	113.2 [101.6, 124.8]	22.0 [0, 83.1]	5.8 [1.9, 9.7]	64.8 [55.9, 73.7]
	COSW (scale2 1–9)	0.10 [0.02, 0.18]	0.16 [0.01, 0.30]	NA	NA	NA
HIFE (120)	RYTHA (t2ha–2)	57.1 [40.9, 73.4]	169.3 [149.9, 165.8]	125.4 [0, 473.3]	13.9 [6.6, 21.2]	148.3 [130.8, 165.8]
	NCRPL	0.16 [0.10, 0.23]	0.58 [0.48, 0.67]	0.80 [0, 3.03]	0.08 [0.03, 0.12]	0.61 [0.51, 0.72]
	FYTHA (t2ha–2)	36.8 [21.7, 51.9]	249.0 [225.7, 272.2]	59.2 [0, 224.0]	23.2 [13.7, 32.6]	46.1 [27.7, 64.6]
	HI (%2)	22.6 [15.8, 29.4]	109.8 [101.6, 118.0]	136.9 [0, 516.1]	5.0 [2.5, 7.5]	<0.001 NA
	DM (%2)	2.9 [2.3, 3.6]	9.4 [8.9, 10.0]	<0.001 [0, 0.01]	0.11 [0.03, 0.19]	0.02 [0, 0.22]
	STA (%2)	13.7 [10.2, 17.2]	67.2 [63.4, 71.0]	1.6 [0, 5.9]	0.3 [0.1, 0.6]	4.3 [3.6, 5.0]
	SUC (%2)	9.8 [7.6, 12.0]	31.9 [30.1, 33.8]	0.3 [0, 1.0]	0.3 [0.2, 0.5]	3.3 [2.9, 3.7]
	BC (mg2 100 g–2)	42.5 [31.1, 53.9]	252.1 [237.9, 266.3]	3.7 [0, 14.0]	1.2 [0.3, 2.2]	8.5 [5.9, 11.0]
	FE (mg2kg–2)	1.58 [1.09, 2.05]	9.38 [8.70, 10.06]	0.19 [0, 0.71]	0.25 [0.10, 0.39]	1.77 [1.42, 2.12]