Взаимодействие генотип-среда и стабилност на сортове фуражен граф (Pisum sativum L.)
Валентин Косев • Наталия Георгиева
Институт по фуражните култури, Плевен; ул. ”Генерал Владимир Вазов” 89
Резюме
A subject of the present study was an assessment of the impact of the environment conditions
on the productivity and stability of forage pea cultivars (Svit, Kamerton, Modus,
Glyans, Pleven 4). The experimental activity was conducted during the period 2012-2014
in IFC-Pleven. It was found significant distinctness of the cultivars regarding their genetic
identity, as well as significant influence of the genotype, environment and their interaction
on the grain yield. The influence of the factor of environment had the largest share in the
overall variation. The phenotypic stability of the cultivars was assessed with three types
of parameters – variance of Shukla (1972), parameter “Di” of Hanson (1970) and nonparametric
ones of Nassar and Huehn (1987) (Si(1), Si(2), Si(3), Si(6)), and Thennarasu
(1995) (NPi(1), NPi(2), NPi(3), NPi(4)). Cultivars Svit and Kamerton were determined as
environmentally stable and with relatively high productivity. They are suitable for growing
in a wide range of environmental conditions. Glyans was the most productive, with good
adaptive ability and responsiveness to improving cultivation conditions. As low-productive
and unstable cultivars can be characterized Modus and Pleven 4.
