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Table 3 Estimated components of variance relative to genotype (SG2) and genotype × environment interaction (SGE2) and to RIL population (SR2), genotype within RIL population (SG(R)2), RIL population × environment interaction (SRE2) and genotype within RIL population × environment interaction (SG(R)E2), for traits of 306 pea lines belonging to three RIL populations tested in three environments (Lodi 2013–14; Lodi 2014–15; Perugia 2013–14)

From: Pea genomic selection for Italian environments

  Analysis without RIL population factorb Analysis with RIL population factorb
Traita S G 2 S GE 2 SG2/SGE2 ratio S R 2 S G(R) 2 S RE 2 S G(R)E 2
GY (t/ha)2 0.567 ** 1.443 ** 0.39 0.078 ** 0.517 ** 1.122 ** 0.689 **
OF (dd from Apr. 1)2 18.88 ** 2.73 ** 6.91 3.98 ** 16.30 ** 1.18 ** 1.96 **
LS [score (1 = min, 5 = max)]2 0.113 ** 0.042 ** 2.68 0.000 NS 0.123 ** 0.015 ** 0.012 NS
SW [(g)2 × 1000] 0.333 ** 0.056 ** 5.94 0.118 ** 0.254 ** 0.043 ** 0.030 **
WS (proportion)2 0.063 ** 0.014 **
  1. a GY, grain yield; OF, onset of flowering; LS, lodging susceptibility; SW, individual seed weight; WS, winter plant survival. All traits assessed in three environments except winter plant survival, assessed only in Lodi 2014–15
  2. b NS and **: component of variance not different from zero at P < 0.05 and different from zero at P < 0.01, respectively