. 2017 May 25;10(2):97–109. doi: 10.1007/s12042-017-9188-5

Table 4.

Variance component estimates and operational broad-sense heritability for number of storage roots, yield of storage roots (SFRY) and vines (VNY), total biomass, harvest index (HI) and dry matter content of storage roots (DMC) form a series of experiments over three locations and two seasons with yam bean under Rwandan growing conditions

Trait	σ_G ²	σ_L ²	σ_S ²	σ_L×S ²	σ_G×L ²	σ_G×L ²/σ_G ²	σ_G×S ²	σ_G×S×L ²	σ_ε ²	h ²
Number of roots	4.2	3.7**	0.1*	0.14	1.4	0.4	0.00	0.1	1.6	0.28
Storage root yield	4.7**	31.9**	1.6**	0.2	3.1**	0.7	2.7**	0.8**	1.5	0.64
Vines yield	1.9*	14.1**	1.7**	0.2	2.2**	1.2	0.4*	0.6	1.2	0.41
Biomass	12.3**	88.0**	6.6**	0.8	9.9**	0.8	2.1**	0.5	4.6	0.57
Harvest index	4.0	11.1*	3.8*	1.6	16.1**	4.0	3.9	12.1	15.6	0.00
DMC of storage roots	4.8*	5.1*	0.1	0.2	2.3*	0.5	0.2	2.0**	3.2	0.90

σ_G ²: variance components of genotypes, σ_L ²: variance component of locations, σ_S ²: variance components of season, σ_{L× S} ²: variance components of location by season interaction, σ_G×L ²: variance component of genotype by location interaction, σ_{G× S} ²: variance component of genotype by season interaction, σ_G×S×L ²: Variance components of interaction of genotype, season and location, σ_ε ²: error; h ²: operational broad-sense heritability

*Significant at the 0.05 level

**Significant at the 0.01 level