EFFECT OF WATER STRESS IN LATE GROWTH STAGES OF SOME WHEAT CULTIVARS | ||||
| Journal of Plant Production | ||||
| Article 2, Volume 28, Issue 2, February 2003, Page 729-745 PDF (12.38 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.242235 | ||||
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| Authors | ||||
| F. A. Hefnawy,1; M. F. Wahba2 | ||||
| 1Field Crops Research Institute | ||||
| 2Soli, Water and EnvIronment Research Institute, Agric. Res. Center | ||||
| Abstract | ||||
| Two field experiments were carried out at Mallawi Agricultural Research StaUon, EI·Menya govemorate, to study the effect 01 drought conditions (holding ir~g8Uon atter 3 and 4 irriagations) at late growth stages comparing to full irrigation treatment (six irrigations) on grain yield and its components during the two successive growing seasons 2000/200i and 2001/2002. water consumptive use WCU and water use efficiency WUE were calculated for the five bread wheat cultivars (Giza 164, Giza 188, Sids 1. Gemmiza 9 and Sakha 93) were also calculated. The most important findings could be summarized as follows: . Water stress at late growth stages reduced grain yiefd by 6.96 and 15.04 % and blolQgical yield by 8.5 and 8.5 % compared with non stressed plants similary some trails Of wheat. . Exposing wheat to drought at late growth stages reduced the total water consumed WCU trom 2291 to 1741 and 1312 m3 1.40 and 1.71 to 2.08 kg Iml. Sicis 1 followed by Giza 168 gave the highest WUE followed by Gemm!za 9 and Giza 164 at the same time Ihe lowes I value was obtained form Sakha 93. - The results Indicated that Giza 164 followed by Sakha 93 and Gemmiza 9 cullivars were drought resistance more Ihan Sids 1 and Giza 168 cultivars under Middle Egypt conditions. | ||||
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