Influence of growing condition, spacing and calcium on seed quality of tomato (Solanum lycopersicum L.)

Experiment consist of two growing conditions viz., open field and naturally ventilated polyhouse condition with three levels of spacing, viz., 60 x 45, 60 x 60 and 60 x 75 cm and four stages of calcium sprays viz. control, weekly, fortnightly and monthly spray. Between two growing condition, polyhouse grown condition recorded significantly higher values for seed quality parameters such as 1000 seed weight (2.57 g), seed germination (87.91%), root length (3.74 cm), shoot length (9.35 cm), dry weight of seedlings (15.22 mg) and seedling vigour index (1149) compared to open field condition. 60 x 60 cm spacing recorded significantly higher values for 1000 seed weight (2.53 g), seed germination (88.04%), root length (3.81 cm), shoot length (9.60 cm), dry weight of seedlings (15.95 mg) and seedling vigour index (1160) compared to S₁ and S₃. The fortnightly calcium spray recorded consistently higher values for 1000 seed weight (2.53 g), seed germination (87.14%), root length (3.82 cm), shoot length (9.50 cm), dry weight of seedlings (15.98 mg) and seedling vigour index (1142).