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:fss.nauka@mail.ru,
²Federal Agricultural Research Center of the North-East named N.V.Rudnitsky, Kirov, Russian Federation, e-mail:priemnaya@fanc-sv.ru

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

For citation:

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.