Plasticity and stability of potato varieties bred by Falenki breeding station
doi: 10.30766/2072-9081.2018.65.4.54-58.read all
N.F. Sintsova1, PhD in Agriculture, senior researcher,
Z.F. Sergeeva1, PhD in Agriculture, leading researcher, head of the laboratory,
O.N. Bashlakova2, PhD in Agriculture, researcher
1Falenki breeding station – branch of Federal Agricultural Research Center of the North-East named N.V. Rudnitsky, s. Falenki, Kirov region, Russian Federation, e-mail:firstname.lastname@example.org,
2Federal Agricultural Research Center of the North-East named N.V.Rudnitsky, Kirov, Russian Federation, e-mail:email@example.com
Studies were done in two locations: on experimental fields of Falenki breeding station (s. Falenki, Kirov region, Russia) and in Federal Agricultural Research Center of North-East (FARC North East, Kirov, Russia) in 2014-2017. Ten new varieties bred in Falenki breeding station were investigated. An average productivity for two locations of ecological test during four years was 26.5 t/ha; on Falenki station's field – 30.1 t/ha; on FARC's field – 22.98 t/ha. According to average productivity, early varieties 170-08 and 179-10 had addition yield as compared to standard variety Udacha 1.4 and 1.0 t/ha correspondingly. Middleearly varieties 27-07, 455-08, and 90-09 exceeded standard variety Nevsky on 5.2…3.5 t/ha. Influence of factor "location", which is part in total phenotypic variability of productivity was 15.8%. Dependence of potato productivity variation on weather conditions of growing season was 64.4%; part of genotype influence – 4.6%. Estimation of values of plasticity bi and stability Si2 allowed to select varieties 170-08 and 179-10 with high phenotypic reaction of genotype to amelioration of growing conditions. Variety 179-10 could be accepted as variety of intensive type (bi = 1.29) with high level of stability (Si2 = 5.42). Variety 170-08 according to Si2 = 4.30 has the most stabile yield within the investigated set of varieties. Variety 455-08 has high calculated stability of production (Si2 = 5.04). Thus, varieties 170-08 and 179-10 have optimal combination of productivity and adaptation parameters.
Keywords: potato, productivity, adaptive ability, genotype-environment interaction, ecological testing of varieties
Sintsova N.F., Sergeeva Z.F., Bashlakova O.N. Plasticity and stability of potato varieties bred by Falenki breeding station // Agrarnayа nauka Evro-Severo-Vostoka. 2018. Vol. 65. no. 4. pp. 54-58. doi: 10.30766/2072-9081.2018.65.4.54-58.