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

Abstract

An experiment was conducted to study the contribution of
different order of umbels to carrot hybrid seed yield and
seed quality under different planting ratio and plant spacing.
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
× 20 cm , 60 cm × 30 cm , 60 cm × 40 cm, 60 cm × 50 cm and 60
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 primary umbels were better in
seed quality characteristics such as mean 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).