Environmental stability of physical traits of wheat grain

Abstract

The environmental stability of test weight and 1000 grain weight was studied in 20 wheat cultivars in five locations (Novi Sad, Indjija, Sremska Mitrovica, Kra-gujevac i Zitoradja) over three growing seasons (1997/98 1998/99 i 1999/2000). Stability parameters were calculated according to Eberhart and Russel (1966). The regression coefficient showed all the cultivars had satisfactory stability for both traits studied. For test weight, the most and least stable genotypes were Zlatka and KG-100 respectively. For 1000 grain weight, Tera was the most and Pievesinjka the least stable. The calculated value of the standard error of the regression coefficient showed greater heterogeneity for 1000 grain weight.

Ekološka stabilnost hektolitarske mase i mase 1000 zrna, ispitivana je kod dvadeset sorti pšenice na pet lokaliteta (Novi Sad, Inđija, Sremska Mitrovica, Kragujevac i Žitorađa), u tri vegetacione sezone (1997/98, 1998/99 i 1999/2000). Parametri stabilnosti izračunati su primenom modela Eberhart i Russel (1966). Prema koeficijentu regresije, sve ispitivane sorte su pokazale zadovoljavajuću stabilnost za oba ispitivana svojstva. Za hektolitarsku masu kao najstabilnija sorta izdvojila se Zlatka, a najnestabilnijom pokazala se sorta KG-100. Za svojstvo masa 1000 zrna, bolju stabilnost pokazala je sorta Tera, nasuprot sorti Nevesinjka koja je bila najnestabilnija. Prema izračunatoj vrednosti standardne greške koeficijenta regresije, veća heterogenost ispoljena je kod svojstva masa 1000 zrna.