Table 3 Mean values of biometric traits of spike productivity traits in families F_3:4Chris Mutant/Novosibirskaya 67 grouped byRht-B1 × VRN-B1andRht-B1 × Ppd-D1alleles

Genotype	Grain weight in main spike, g		Grain number per main spike, pcs.		Thousand grain weight, g
Genotype	Moscow	Krasnodar	Moscow	Krasnodar	Moscow	Krasnodar
RRVV	1.17 ± 0.1a^a	1.43 ± 0.1a	35.2 ± 1.3ab	48.5 ± 1.5a	32.9 ± 0.7a	29.5 ± 0.8a
RRvv	1.25 ± 0.1a	1.51 ± 0.1a	37.7 ± 3a	48.6 ± 3.9a	32.8 ± 1.9a	31.4 ± 1.8a
rrVV	0.95 ± 0.1b	1.35 ± 0.1b	33.6 ± 1.5b	50.2 ± 1.4a	27.6 ± 0.8b	27 ± 0.7b
rrvv	0.9 ± 0.2b	1.07 ± 0.5b	31.4 ± 4.8b	42.6 ± 14a	28.3 ± 1.7b	24.8 ± 5.2b
RRPP	1.17 ± 0.1a	1.43 ± 0.1a	35.2 ± 1.3bc	48.5 ± 1.5a	32.9 ± 0.7a	29.5 ± 0.8a
RRpp	1.24 ± 0.1a	1.41 ± 0.1ab	38.1 ± 1.7a	49.5 ± 1.7a	32.1 ± 1.1a	28.5 ± 0.8a
rrPP	0.95 ± 0.1b	1.35 ± 0.1b	33.6 ± 1.5c	50.2 ± 1.4a	27.6 ± 0.8b	27 ± 0.7b
rrpp	1.01 ± 0.1b	1.2 ± 0.2c	37.5 ± 3.2ab	47.6 ± 3.7a	26.2 ± 1.3b	24.8 ± 2c

Mean value± confidence intervals at 0.01 significance level are shown
^aMean values designated with the same letters have no significant differences within each group of four genotypes (RRVV, RRvv, rrVV, rrvv and RRPP, RRpp, rrPP, rrpp) as calculated using two-way ANOVA