Studies on contribution of umbel order on seed yield and quality under different planting ratio and plant spacing in carrot hybrid, Pusa Vasuda

An experiment was conducted to study the contribution of different order of umbels to carrot hybrid seed yield and seed quality under different plant ingratio and plantspacing. The experiment was conducted with the parental lines of carrot hybrid Pusa Vasuda. The experiment consisted of two planting ratio of 1: 6 and 1: 4 (pollen parent: seed parent) and five different plant spacing of the seed parent viz. 60 cm × 20cm, 60 cm × 30cm, 60 cm×40cm, 60cm × 50 cmand60 cm × 60 cm. The results revealed that umbel order had a significant effect on carrot seed yield and quality. Contribution of secondary umbel to seed yield/plant was maximum (65.1% and 65% in 1: 6 and 1: 4, respectively) followed by primary (29.3% and 29.2% in 1: 6 and 1: 4, respectively) and tertiary umbel (5.6% and 5.8% in 1: 6 and 1: 4, respectively).Seeds from primaryumbels were better in seed quality characteristics such asmean germination (71.7% and 72.2% in 1: 6 and 1: 4, respectively), mean thousand seed weight (2.162 g and 2.17 g in 1: 6 and 1: 4, respectively) and mean seedling length (16.7 cm in both 1: 6 and 1: 4).