Evaluate the effect of sowing date and fertilizer on moisture content and flavonoid content of seed Lallemantia (Lallemantia royleana Benth.) during grain filling

In order to evaluate the effect of autumn and spring sowing and fertilizer on moisture content and flavonoid content and germination seed of Lallemantia (Lallemantia royleana Benth.) during grain filling, a factorial experiment in a randomized complete block design with three replicates was conducted in Research Field of Medicinal Plant Research Center of Shahed University in 2014 croppin year. The factors were sowing date autumn (15 October) and spring (15 February) and chemical fertilizer (without fertilizer, half doze of fertilizer (23 kg/ha pure N+ 50.6 kg/ha pure P2O5) and full doze of fertilizer (46 kg/ha pure N+ 101.2 kg/ha pure P2O5). Mean comparison showed that the highest moisture amount (20.812 %) related none fertilizer treatment and lowest related to the full doze of fertilizer (8.165 %) which was statistically with half doze of fertilizer (23 kg/ha pure N+ 50.6 kg/ha pure P2O5) had no significant difference. Also, the highest flavonoid amount related to none fertilizer treatment (0.282) which showed an increase of 90.54% compared to treatment of full doze of fertilizer. The highest flavonoid related to the 28 days after flowering (0.713) was in spring sowing and none fertilizer and lowest related to the 7 days after flowering was in fall sowing and full doze of fertilizer (0.118) is the plant. Also, the highest percentage of germination was related to the fall sowing (74.81) which showed an increase of 11.6% compared to spring sowing. Generally results showed that fall sowing date and without fertilizer increases the moisture amount seed but spring sowing date and without fertilizer treatment increases the flavonoid amount seed of Lallemantia.