تعیین آستانه تحمل به شوری گونههای سالیکورنیا با استفاده از آب خلیجفارس | ||
| خشک بوم | ||
| مقاله 9، دوره 8، شماره 2، بهمن 1397، صفحه 103-112 اصل مقاله (774.48 K) | ||
| نوع مقاله: مقاله علمی | ||
| شناسه دیجیتال (DOI): 10.29252/aridbiom.2019.1408 | ||
| نویسندگان | ||
| غلامحسن رنجبر؛ هادی پیرسته انوشه* | ||
| استادیار مرکز ملی تحقیقات شوری، سازمان تحقیقات، آموزش و ترویج کشاورزی، یزد، ایران | ||
| چکیده | ||
| تشدید روند شورشدن منابع آب و خاک، لزوم توجه بیشتر به گونههای شورزی را دوچندان کرده است. در این پژوهش تأثیر تنش شوری به‌صورت درصدهای مختلف (شاهد، 15، 30، 45، 60، 75، 90 و 100 درصد) از آب خلیجفارس (58 دسیزیمنس برمتر) بر جوانهزنی و رشد گیاهچه گونههای مختلف سالیکورنیا، به‌منظور تعیین آستانه تحمل به شوری و آستانه کاهش 50 درصدی در مرکز ملی تحقیقات شوری در یزد در سال 1395 بررسی شد. گونههای مورد استفاده شامل دو گونه Salicornia europaeaو S. bigelovii به همراه سه توده بومی خورِ مُزین (استان بوشهر)، ایلخچی (استان آذربایجان شرقی) و مرکزی (مناطق مرکزی ایران) بود. نتایج نشان داد که میانگین جوانهزنی گونهها از شوری 25 درصد آب خلیجفارس بهطور معنیداری کاهش یافت، ولی جوانهزنی هیچ‌کدام از گونهها حتی در شوری 100 درصد آب خلیجفارس متوقف نشد. بااین‌حال، با افزایش شوری طول گیاهچه توده خورِ مُزین و گونههای S. europaea و S. bigelovii کاهش، ولی تودههای ایلخچی و مرکزی بهترتیب تا شوری 45 و 60 درصد آب خلیجفارس افزایش و پس‌ازآن کاهش یافت. بهطورکلی، همه گونههای سالیکورنیا تحمل به شوری بالایی داشتند، ولی تفاوت قابل‌ملاحظه‌ای بین گونههای مختلف مشاهده شد، بهطوریکه حدآستانه تحمل تودههای خورِ مُزین، ایلخچی، مرکزی و گونههای S. europaea و S. bigelovii بهترتیب 36/14، 01/5، 46/14، 91/11 و 54/7 دسیزیمنس برمتر و حدآستانه کاهش 50 درصد جوانهزنی آنها بهترتیب 25/56، 60/51، 15/61، 69/32 و 01/27 دسیزیمنس برمتر برآورد شد. | ||
| کلیدواژه‌ها | ||
| جوانه زنی؛ تحمل؛ شورزی؛ شورورزی؛ آب دریا | ||
| عنوان مقاله [English] | ||
| Determination the threshold of salinity tolerance in Salicornia species using Persian Gulf water | ||
| نویسندگان [English] | ||
| Gh. Ranjbar؛ H. Pirasteh-Anosheh | ||
| Assistant Professor, National Salinity Research Center, Agricultural Research, Education and Extension Organization (AREEO), Yazd, Iran | ||
| چکیده [English] | ||
| Intensification salinization of water and soil resources requires more attentions to halophytes species cultivation. In this research, the effect of salt stress as varied percentage (control, 15%, 30%, 45%, 60%, 75%, 90% and 100%.) of Persian Gulf water (58 dS m-1) was examined on germination and seedling growth of different Salicornia species, in order to determine salinity tolerance threshold and threshold of 50% reduction in germination at National Salinity Research Center, Yazd in 2017. Species consisted of Salicornia europaea, S. bigelovii along with three local populations: Khor-e-Mozain (Bushehr province), Ilkhchi (East Azerbaijan province) and Markazi (Iran central regions). The results showed that the mean germination of the species were significantly reduced from 25% Persian Gulf water, however germination of all species did not stopped even at 100% Persian Gulf water. However, seedling length in Khor-e-Mozain, S. europaea and S. bigelovii was decreased as salinity was intensified, while in Ilkhchi and Markazi were increased up to 45% and 60% Persian Gulf water, respectively and then was reduced. In general, all Salicornia species had high salinity tolerance, however there were considerable variations between different species, so that salinity tolerance threshold of Khor-e-Mozain, Ilkhchi, Markazi, S. europaea and S. bigelovii were 14.36, 5.01, 14.46, 11.91 and 7.54 dS m-1 and their threshold of 50% reduction were 56.25, 51.60, 61.15, 32.69 and 27.01 dS m-1, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Germination, Halophyte, Haloculture, Sea water, Tolerance | ||
| مراجع | ||
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