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Responses of some Iranian tea clones [Camellia sinensis (L.) O. Kuntze] to drought stress | ||
| Crop Breeding Journal | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 11 آبان 1399 | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/cbj.2020.351375.1057 | ||
| نویسندگان | ||
Sanam safaei chaeikar  1؛ Shiva Roofigari Haghighat2؛ Saeideh Marzvan3؛ Reza Azadi2
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| 1Tea Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO) | ||
| 2Tea Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Lahijan, Iran | ||
| 3University of Zanjan | ||
| چکیده | ||
| Drought is one of the most important environmental stresses affecting tea productivity in tea growing areas. Nine field-grown tea [Camellia sinensis (L.) O. Kuntze] clones in the north of Iran were subjected to drought stress by withholding irrigation for 50 days. The effects of drought stress were measured by studying growth and morphological (shoot number, shoot length, shoot fresh weight, length of 5th leaf, width of 5th leaf, green leaf yield), physiological (relative water content), biochemical (Proline and total sugar content), and chemical (Polyphenol) parameters after 50 days of drought imposition. Drought stress resulted in a decrease in growth and morphological measurements, polyphenol content, and an increase in proline and total sugar concentration, as a consequence of leaves' reduced RWC. Outcomes of grouping the clones under irrigation and water deficit stress conditions and comparing them with the results of traits' mean comparison and water stress index showed that clones 276, 100, and 285 were identified as the drought-tolerant group. Also, results offered that in most cases, clones 277, 278, 74, 272, and 399 were set in a group with low values for all traits and could be considered as a susceptible group to drought stress. Overall, these findings provide new insight into the mechanisms of tolerance to drought in tea plants. | ||
| کلیدواژه‌ها | ||
| Antioxidant activity؛ Proline؛ Polyphenol؛ Relative Water Content؛ Total sugar؛ Water stress index | ||
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آمار تعداد مشاهده مقاله: 2 |
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