Table 1. Phenotypic analysis summary of eight yield-related traits from ‘Beauregard’ × ‘Tanzania’ (BT) full-sib family.

	NOCR	NONC	TNR	CYTHA	NCYTHA	RYTHA	FYTHA	CI
$\overline{\text{B}}$	2.881	1.934	4.834	12.567	2.208	15.318	15.521	0.472
$\overline{\text{T}}$	0.990	0.763	1.598	4.793	0.869	5.730	41.144	0.107
${\overline{\text{F}}}_1$	2.840	1.971	4.795	17.739	2.247	19.980	22.994	0.420
min(F1)	1.388	0.513	1.822	6.000	0.572	6.658	13.801	0.140
max(F1)	4.494	4.184	7.947	34.226	4.817	37.106	36.880	0.605
${\sigma }_g^2$	0.386	0.277	1.117	27.611	0.313	31.568	23.677	5.88×10−3
${\sigma }_{ge}^2$	0.272	0.213	0.571	17.028	0.310	18.538	34.451	2.30×10−3
${\sigma }^2$	0.686	0.559	1.462	32.271	1.082	35.098	50.836	5.23×10−3
H2 (%)	80.07	78.31	84.59	84.08	70.39	84.73	71.35	88.42

Parental ($\overline{\text{B}}$ and $\overline{\text{T}}$) and progeny $\left({\overline{\text{F}}}_1\right)$ means, minimum, and maximum F₁ means, and genetic $\left({\sigma }_g^2\right)$, genotype-by-environment interaction $\left({\sigma }_{ge}^2\right)$ and residual $\left({\sigma }^2\right)$ variance components and heritability (H²) estimates are shown for eight traits: number of commercial (NOCR), noncommercial (NONC) and total (TNR) roots per plant, commercial (CYTHA), noncommercial (NCYTHA) and total (RYTHA) root yield in t ha⁻¹, foliage yield (FYTHA) in t ha⁻¹, and commercial index (CI)