USE OF CHEMICAL DESICCATION EFFECT AS SELECTION TECHNIQUE FOR DROUGHT TOLERANCE IN WHEAT | ||
| Journal of Productivity and Development | ||
| Article 4, Volume 16, Issue 1, January 2011, Pages 51-63 PDF (230.64 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpd.2011.42428 | ||
| Authors | ||
| Abdelhamid Salem1; Hassan Awad* 1; El sayed Hasan2; Amgad Morsy3 | ||
| 1Agron. Dept. Faculty of Agriculture Zagazig University, Egypt. | ||
| 2Efficient productivity Institute, Zagazig University, Egypt.. | ||
| 3Agriculture Research Centre, Giza, Egypt. | ||
| Abstract | ||
| The aim of the present study was to evaluate whether treatments with chemical desiccants either NaClO3 or Mg (ClO3)2 over the canopy of six diverse wheat genotypes during each of vegetative, flowering and filling period stages could properly memic the effects of water defficiency at the same growth stages on wheat grain yield and its components. The wheat genotypes Sakha 69, Sahel 1, Gemmeiza 5, Giza 168, Bocro- 4 and Seri 82 showed highly significant differences for grain yield and its components under the different treatments of chemical desiccation and drought stress. The highest grain yield and its components was achieved by the imported wheat genotype Seri 82 followed by Bocro- 4, Sakha 69, and Sahel 1, while Gemmeiza 5 attained the lowest values in this respect. In addition, the studied wheat genotypes revealed varied response to chemical desiccants and drought stress conditions. Wheat genotypes Seri 82 and Sakha 69 could be classified as drought tolerant, while Gemmeiza 5 and Giza 168 are sensitive to drought. The reduction of grain yield caused by drought stress, spraying NaClO3 and Mg (ClO3)2 at vegetative stage were 48%, 50% and 41%, respectively. However, they were 51%, 42% and 47% at flowering stage as well as 55%, 41% and 45% at grain filling period stage in the some respect. In general, there were positive and significant correlations between both grain yield and yield reduction under chemical desiccant treatments and drought stress at the three stages of growth, suggesting that chemical desiccation treatments either NaClO3 or Mg (ClO3)2 could be used as statisfactory methods for screening wheat germplasm for drought stress instead of drought regime treatments | ||
| Keywords | ||
| Chemical desiccation; selection technique; Drought tolerance; Wheat | ||
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