Abstract:
Wheat is one of the significant in cereal crops for feeding the world’s population, its yield and growth
components adversely affect by abiotic and biotic stresses. In view of our best knowledge, there is no study
on how changes the seedling growth ability of wheat seeds, which grow in different groundwater depths,
without irrigation. Therefore, this study was carried out to investigate the influence of groundwater depths
(30, 55 and 80 cm) on germination and seedling growth characteristics of wheat seed grown under without
irrigation condition. The wheat crops were grown in 9 lysimeters (60 cm diameter x 100 cm height) under
rain shelter condition and then harvested wheat seeds from different groundwater depths were used for
germination experiment. The results show that groundwater depths affected the early growth parameters of
wheat seed. However, root fresh-dry weights and root lengths were not statistically influenced by
groundwater depths, whereas these values increased with increase groundwater depth up to 55 cm and then
decreased. Moreover, shoot length, shoot fresh weight and root dry weight were considerably affected by
groundwater depths. The obtained results from this study the highest early seedling growth parameters of
wheat were obtained from 55 cm groundwater depths, while the lowest values were obtained from 80 cm
groundwater depth. In the light of these values, under the shallow groundwater and without irrigation grown
wheat crops, when groundwater depth is higher than 55 cm, reusing of wheat seeds were significantly
decreased early growth parameters and consequently decreases yield losses.
