Evaluation of some maize hybrids for water stress tolerance [electronic resource].
تقييم بعض هجن الذره الشاميه لتحمل الإجهاد المائى.
- p.315-324.
Includes references.
A field experiment was carried out at Mallawy Research Station, Field Crops Res. Inst, Agric. Res. Center, Egypt in 2010 and 2011 seasons to study the effect of water deficit at different physiological growth stages on growth and yield of maize hybrids. Twenty hybrids, i.e. (SC 10, SC 122, SC 123, SC 124, SC 128, SC 129, SC 162, SC 164, SC 166, SC 167, SC 168, SC 173, TWC 310, TWC 311, TWC 314, TWC 320, TWC 321, TWC 324, TWC 329, and TWC 352), and four water stress treatments i.e. skipping the third and fourth irrigations, skipping the fifth and sixth irrigations, skipping the seventh irrigation, and the control, ( regular irrigation). Statistical design was randomize complete blocks arranged in incomplete blocks with four replications nested within blocks (water stress treatments), and hybrids were randomly distributed within water stress treatments (blocks). Results of 2010 revealed that skipping 3rd and 4th irrigations and, skipping the 7th irrigation significantly reduced number of days from planting to 50% tasseling and silking, In 2011 skipping irrigation treatments did not significantly affect tasseling and silking, and plant and ear heights. But in 2010, data presented showed that water deficit treatments i.e. (skipping irrigations 3rd and 4th, 5th and 6th irrigations and 7th irrigation) at different reproductive growth stages significantly reduced plant and ear heights compared with the control (regular irrigation), and skipping irrigation 7 was associated with the highest ear length, and number of kernel per row in both growing seasons. In contrast, skipping irrigation 3rd and 4th lead to the shortest ear length and number of kernels per row in the two growing seasons 2010 and 2011.
Summary in Arabic.
Corn--Drought tolerance. Corn--Effect of stress on. Corn--Hybrids. water stress.