Correlations among Some Characteristics in Field Pea.

Pea grain yield is a quantitative character affected by many genetic and environmental factors. The trial was carried out during the period of 2007-2009 in the Research Institute of Forage Crops, Pleven, Bulgaria, including seven spring field pea lines. The line L-12AB had the greatest average values of both plant height (116.90 cm) and first pod height (56.12 cm). The largest 1000 seed mass was in the line L-470-16 (273.33 g). The winter cultivars had the longest growing season (239 days). The highest seed weight per plant was in the line L-12AC (8.54 g), while the highest seed yield was in the line L-12AB (2970 kg ha-1). Seed weight per plant was in the highest positive correlation with both number of pods per plant (r = 0.908) and number of fertile nodes per plant (r = 0.901). The highest positive correlation were between plant height and growing season (r = 0.990). [ABSTRACT FROM AUTHOR]