Articles » Influence of Sowing Time on the Biological Behaviour, Biomass Production, and Rutin Content of Buckwheat (Fagopyrum esculentum Moench)
of rutin, which is a kind of flavonol glycoside compounds used in preventing edema, haemorrhagic diseases, and stabilizing high blood pressure due to its
This study was conducted to determine the optimal sowing time for maximizing rutin yield.
METHODS. The research was carried out during the 2001 at Paykan Shahr, situated 16 km away from
Tehran, Iran. A buckwheat cultivar provided from the Agricultural Research Institute of Kanagawa (Japan)
was tested at seven sowing time starting from 5 April and repeated every 30 days (5 May, 5 June, 5 July, 5
August, 5 September and 5 October).The herb was harvested at the full flowering stage.
At that time were collected data on phenological phases, plant height, number of branches and herb
yield. The quality of the seed harvested at the full
ripening stage was analysed by 1000 seeds weight.
RESULTS. The highest dry herb yield (24.2 and 24.6
g/plot) was recorded from July and August sowing
respectively. The highest rutin content (0.60 g /plot in
dry matter) was extracted from the plants sown on
July. The highest 1000 seed (37.5, 35.2 and 38.0 g)
weight was obtained from April, August and Sep
tember sowing respectively.
CONCLUSIONS. This research demonstrated a strong
influence of the sowing time on buckwheat yield per
formance under Iranian environment. The most suit
able time for sowing in order to obtain the highest
amount of herb yield and rutin content was first of