علاقة درجة الحرارة في خصائص انبات بعض أصناف حنطة الخبز

الملخص EN

A laboratory experiment was conducted during 2011 at the laboratories of the Faculty of Science at the University of Plymouth in UK, to determine the germination capacity of bread wheat seeds (Triticum aestivum L.) for five cultivars (Fateh, IPA 99, Sham 6, Clare, and Caxton) under the effect of three temperatures (10, 15 and 20 ºC).

A completed randomized design with four replications was used.

The results showed that the cultivars IPA 99 and Fateh were superior in the percentage of germination in the first count (FG) 92.5, 93.2 % and final count (FIG) 97.0, 98.8 %, coefficient of velocity of germination (CVG) 37.8, 35.5 %.d-1, mean germination time (MGT) 2.8, 3.0 d and germination rate index (GRI) 38.5, 36.9 %.d-1.

The temperature 20 ºC was superior in FG 83.1 %, CVG 38.7 %.d-1, MGT 2.7 d, GRI 37.9 %.d-1, RL 10.5 cm, PL 8.3 cm and SDW 0.0121 mg.

IPA 99 and Sham 6 were superior under the three temperatures 20, 15 and 10 ºC in FG.

The interactions (Sham 6 × 20 ºC) and (IPA 99 × 20 ºC) were superior in MGT, GRI and PL.

A significant positive correlation was found between FIG and between each of FG 0.652, CVG 0.324 and GRI 0.533, while a negative correlation was found between MGT and between each of FG -0.869, FIG -0.343, CVG -0.950 and GRI -0.925.

It can be concluded that the cultivars IPA 99 and Sham 6 are suitable for sowing in areas with low temperatures during the germination stage and should be investigate the potential performance and ability of seeds of IPA99 and Sham 6 under field condition.