Evaluation of Drought Tolerance of someWinter Wheat Genotypes
Drought stress is one of the main limiting factors crop production in arid and semiarid regions. In this study, drought tolerance of 19 wheat genotypes were evaluated by using UPGMA cluster analysis. To this end, the effect of drought stress on a number of related agronomic and physiological traits...
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| Format: | Article |
| Language: | fas |
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Islamic Azad University, Tabriz Branch
2017-04-01
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| Series: | Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī |
| Subjects: | |
| Online Access: | http://jcep.iaut.ac.ir/article_529499_4ce98ec58c8e11c3d9aad486abc0c7a1.pdf |
| _version_ | 1828738520694390784 |
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| author | Rana Naderi Zarnaghi Reza Fotovat |
| author_facet | Rana Naderi Zarnaghi Reza Fotovat |
| author_sort | Rana Naderi Zarnaghi |
| collection | DOAJ |
| description | Drought stress is one of the main limiting factors crop production in arid and semiarid regions. In this study, drought tolerance of 19 wheat genotypes were evaluated by using UPGMA cluster analysis. To this end, the effect of drought stress on a number of related agronomic and physiological traits of wheat genotypes, belonging to three groups of sensitive, intermediate and drought tolerant, under three conditions of normal, moderate and severe drought stress were studied. A factorial experiment based on completely randomized design with three replications was performed. Traits like plant height, shoot fresh weight, spike length, awn length, shoot dry weight, seed yield and relative water content of genotypes were measured. Analysis of variance showed that the effects of drought on all traits except awn length were significant. Most of the traits were negatively affected by drought stress. Highest reduction was observed in grain yield. Cluster analysis grouped genotypes exposed to drought stresses in to three categories. Genotypes numbering 15, 13, 12, 16 and 17 expirienced low means in all of traits under study. The results also showed that the second and third groups, resulting from cluster analysis, were in agreement with the results of previous researches reported. The first cluster, however, was found to be inconsistent with their initial introduction grouping under severe drought stress conditions. Therefore, the initial grouping was consistent especially in most of sensitive and tolerant genotypes under severe drought stress conditions. |
| first_indexed | 2024-04-13T00:04:53Z |
| format | Article |
| id | doaj.art-90b2c1beff9b4a1eacbb19fabda458aa |
| institution | Directory Open Access Journal |
| issn | 2538-1822 2476-731X |
| language | fas |
| last_indexed | 2024-04-13T00:04:53Z |
| publishDate | 2017-04-01 |
| publisher | Islamic Azad University, Tabriz Branch |
| record_format | Article |
| series | Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī |
| spelling | doaj.art-90b2c1beff9b4a1eacbb19fabda458aa2022-12-22T03:11:16ZfasIslamic Azad University, Tabriz BranchIkufīziyuluzhī-i Giyāhān-i Zirā̒ī2538-18222476-731X2017-04-01104(40) زمستان945958529499Evaluation of Drought Tolerance of someWinter Wheat GenotypesRana Naderi Zarnaghi0Reza Fotovat1Young Researchers and Elite club, Tabriz Branch, Islamic Azad University, Tabriz, IranAssistant Prof., Department of Plant Breeding, Faculty of Agriculture, University of Zanjan, Zanjan, IranDrought stress is one of the main limiting factors crop production in arid and semiarid regions. In this study, drought tolerance of 19 wheat genotypes were evaluated by using UPGMA cluster analysis. To this end, the effect of drought stress on a number of related agronomic and physiological traits of wheat genotypes, belonging to three groups of sensitive, intermediate and drought tolerant, under three conditions of normal, moderate and severe drought stress were studied. A factorial experiment based on completely randomized design with three replications was performed. Traits like plant height, shoot fresh weight, spike length, awn length, shoot dry weight, seed yield and relative water content of genotypes were measured. Analysis of variance showed that the effects of drought on all traits except awn length were significant. Most of the traits were negatively affected by drought stress. Highest reduction was observed in grain yield. Cluster analysis grouped genotypes exposed to drought stresses in to three categories. Genotypes numbering 15, 13, 12, 16 and 17 expirienced low means in all of traits under study. The results also showed that the second and third groups, resulting from cluster analysis, were in agreement with the results of previous researches reported. The first cluster, however, was found to be inconsistent with their initial introduction grouping under severe drought stress conditions. Therefore, the initial grouping was consistent especially in most of sensitive and tolerant genotypes under severe drought stress conditions.http://jcep.iaut.ac.ir/article_529499_4ce98ec58c8e11c3d9aad486abc0c7a1.pdfAgronomic traitsCluster analysis groupingDiscriminate functionsdrought stress |
| spellingShingle | Rana Naderi Zarnaghi Reza Fotovat Evaluation of Drought Tolerance of someWinter Wheat Genotypes Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī Agronomic traits Cluster analysis grouping Discriminate functions drought stress |
| title | Evaluation of Drought Tolerance of someWinter Wheat Genotypes |
| title_full | Evaluation of Drought Tolerance of someWinter Wheat Genotypes |
| title_fullStr | Evaluation of Drought Tolerance of someWinter Wheat Genotypes |
| title_full_unstemmed | Evaluation of Drought Tolerance of someWinter Wheat Genotypes |
| title_short | Evaluation of Drought Tolerance of someWinter Wheat Genotypes |
| title_sort | evaluation of drought tolerance of somewinter wheat genotypes |
| topic | Agronomic traits Cluster analysis grouping Discriminate functions drought stress |
| url | http://jcep.iaut.ac.ir/article_529499_4ce98ec58c8e11c3d9aad486abc0c7a1.pdf |
| work_keys_str_mv | AT rananaderizarnaghi evaluationofdroughttoleranceofsomewinterwheatgenotypes AT rezafotovat evaluationofdroughttoleranceofsomewinterwheatgenotypes |