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Evaluation of growth, yield, relative performance and heat susceptibility of eight wheat (Triticum aestivum L.) genotypes grown under heat stress | ||
| International Journal of Plant Production | ||
| مقاله 14، دوره 7، شماره 3، تیر 2013، صفحه 615-636 اصل مقاله (1.04 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22069/ijpp.2013.1121 | ||
| نویسندگان | ||
| Akbar Hossain* 1؛ M.A.Z. Sarker2؛ M. Saifuzzaman3؛ J.A. Teixeira da Silva4؛ M.V. Lozovskaya5؛ M.M. Akhter3 | ||
| 1Wheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-5200 Bangladesh.Faculty of Biological Sciences, Astrakhan State University, Astrakhan 414056, Russia. | ||
| 2aWheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-5200 Bangladesh. | ||
| 3Wheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-5200 Bangladesh. | ||
| 4Faculty of Agriculture and Graduate School of Agriculture, Kagawa University, Ikenobe, Miki-cho, 761-0795, P.O. Box 7, Miki cho post office, Ikenobe 3011-2, Kagawa-Ken, 761-0799, Japan. | ||
| 5Faculty of Biological Sciences, Astrakhan State University, Astrakhan 414056, Russia. | ||
| چکیده | ||
| Eight spring wheat cultivars were evaluated under three heat stress conditions (early, late and very late) in order to identify suitable cultivars to develop heattolerant genotypes resistant to future global warming. Results from the study indicate that stress did not negatively affect flag leaf area in ‘Prodip’ and ‘Sufi’, flag leaf dry matter partitioning in ‘Prodip’, ‘BARI Gom-26’ and ‘Shatabdi’, above-ground dry matter partitioning in ‘Shatabdi’ and ‘BARI Gom-26’, seedling emergence in ‘Sufi’ and ‘BARI Gom-26’, or tiller production in ‘Sufi’ and ‘BARI Gom-26’. With respect to lower yield reduction, relative performance and heat susceptibility index (HSI), ‘Sufi’ was highly heat stress-tolerant, followed by ‘BARI Gom-26’ and ‘Shatabdi’. On the basis of HSI values in early heat stress and extremely late heat stress (corresponding to early and extremely late sowing), ‘BARI Gom-26’ (HSI=0.10, 0.65) and ‘Shatabdi’ (0.22, 0.62) were highly tolerant to early heat stress and moderately tolerant to extremely late heat stress while ‘Sufi’ was highly tolerant (0.35) to extremely late heat stress and moderately tolerant (0.51) to early heat stress. All other genotypes were susceptible to heat stress, among which ‘Gourab’ (2.19, 1.46) was the most susceptible followed by ‘Sourav’ (1.19, 1.42), ‘Prodip’ (1.03, 1.23), ‘BARIGom-25’ (1.61, 0.89) and ‘Bijoy’ (1.04, 1.28). Thus, ‘BARIGom-26’, ‘Shatabdi’ and ‘Sufi’ have the greatest potential to be used as high-yielding wheat genotypes under warm to hot environments and could be used in a breeding programme to develop heat-tolerant wheat. | ||
| کلیدواژهها | ||
| High-temperature؛ Wheat؛ Genotype؛ Growth and development | ||
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