The influence of temperature on corn seed water uptake

Abstract

Temperature is a very important factor which effects seed water uptake. In this paper we investigated the effect of high temperature and high humidity on seed rate imbibition for five corn hybrids. Seeds were placed at the temperature of 41°C and 95-100% relative humidity (treatment) . These seeds were compared with control. Seeds were hydrated at 12°C and 20°C for 6, 12, 24, 48 h. The highest imbibition rate was shown by ZP SC 599 hydride seed. The lowest imbibition rate was shown by ZP SC 599 hybrid seed. The seed treated at 12°C had the lowest imbibition rate. At 20°C differences in imbibition rate were lower than at 12°C.

Temperatura je važan ekološki činilac koji utiče na usvajanje vode kod semena. U ovom raduje ispitivano dejstvo visokih temperatura i vlage na brzinu bubrenja semena pet hibrida kukuruza. Seme je podvrgnuto temperaturi od 41°C i relativnoj vlažnosti vazduha od 95-100% (tretman). Ono je upoređeno sa kontrolom. Seme je stavljeno na bubrenje na 12 i 20°C tokom 6, 72, 24, 48 sati. Najveću brzinu bubrenja pokazuje seme hibrida ZP SC 599. Najnižu brzinu usvajanja vode pokazuje ZP TC196. Najnižu brzinu bubrenja semena je imalo tretirano seme na 12°C. Na temperaturi od 20°C razlike u brzini bubrenja su bile manje nego na nižoj temperaturi (12°C).