چكيده لاتين :
This study was conducted to determinate of yield component relation with quantity and quality yield of isabgol (Plantago ovata Forsk.) in dryland condition in 2004. Isabgol is an annual herb cultivated as a medicinal plant. The experiment was designed in a complete randomized block with three replications in Maraveh- Tapeh station, in north east of Golestan province. The treatments comprised: Three seeding rates: 2, 4 and 6 Kg/ha (20 Cm between and 4, 2 and 1.25 cm on rows respectively). Seed yield and four of its components, namely: Number of spikes per area (SP), | number of seed per spike (SEP), 1000- seeds weight (SW) and shoot weight (SHW) were studied. Results indicated that seeding rates effect were significant on seed yield (p<0.05), SP (p<0.01), SEP (p< 0.01) and SHW (p<0.05), but there were not significant SW and musilage content. SP was found to be an important component of seed yield and its relationship with seed yield was affected by seeding rate. SW unaffected by seeding rates but as a component of seed yield it was the least important of the three components measured. SP was as important as SEP as a component of seed yield, and was highly correlated with seed yield.
