fa ارزیابی تحمل به خشکی و شناسایی صفات مرتبط با آن در ژنوتیپ‌های جو عمومى General كاربردي Applicable <p dir="RTL" style="margin: 0cm 0cm 0pt; text-align: justify; line-height: 80%; -ms-text-justify: kashida; text-kashida: 0%;"><font color="#000000"><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">به‌منظور بررسی صفات مرتبط با تحمل به تنش آبی</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">و روابط بین</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">آنها در ژنوتیپ‌های جو و نیز شناسایی ژنوتیپ‌های متحمل، آزمایشی</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه شیراز در دو سال زراعی 92 - 1391 و 93 - 1392 انجام شد. هفتاد و چهار ژنوتیپ‌ خارجی جو به</span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Arash&quot;; font-size: 11pt;">‌</span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">همراه دو رقم تجاری ایرانی (ریحان و نصرت)</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">در دو</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">شرایط آبیاری</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">نرمال</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">و تنش آبی (قطع</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">آبیاری در مرحله گل‌دهی)</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">به‌صورت کرت‌های یک‌بار خرد شده</span></b><b><span dir="LTR" lang="FA" style="line-height: 80%; font-size: 11pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman"> </font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">بر پایه طرح بلوک&shy;های کامل تصادفی مورد ارزیابی قرار گرفتند. با توجه به ضرایب همبستگی، شاخص تحمل تنش (</span></b><b><span dir="LTR" style="line-height: 80%; font-size: 9pt; mso-bidi-font-family: &quot;B Lotus&quot;;"><font face="Times New Roman">STI</font></span></b><b><span lang="FA" style="line-height: 80%; font-family: &quot;B Lotus&quot;; font-size: 11pt; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">) به‌عنوان بهترین شاخص برای انتخاب ژنوتیپ‌های متحمل به تنش خشکی در گیاه جو شناخته شد و صفات تعداد سنبله بارور، طول سنبله، عملکرد زیست‌توده و عملکرد دانه همبستگی معنی‌داری با شاخص تحمل به تنش داشتند. براساس این شاخص، ژنوتیپ‌های شماره 17، 23، 24، 41، 47، 58، 65، 71 و 72 از جمله ژنوتیپ‌های متحمل و پر محصول در هر دو شرایط نرمال و تنش شناخته شدند. </span></b></font></p> <p>In order to evaluate water stress tolerance-related traits and their relationships in barley genotypes, as well as identification of drought tolerant genotypes, a field experiment was carried out during 2012-13 and 2013-14 growing seasons in College of Agriculture, Shiraz University, Iran. Seventy four foreign barley genotypes and two Iranian varieties (Reyhan and Nosrat) were evaluated under normal irrigation and water stress (water withheld at flowering stage) conditions according to a split plot experiment based on a randomized complete block design. Correlation analysis indicated that stress tolerance index (STI) was the best criterion for selecting barley drought-tolerant genotypes and significant correlations between number of fertile spikes, spike length, biomass, and seed yield and stress tolerance index were observed. Based on STI, the genotypes number 17, 23, 24, 41, 47, 58, 65, 71 and 72 were proved to be the most tolerant and high-yielding genotypes under both normal and water stress conditions.</p> <p></p> <p style="margin-left: 1.9pt;"></p> شاخص تحمل تنش, تجزیه و تحلیل همبستگی, زیست‌توده Biomass, Correlation analysis, Stress Tolerance Index 75 91 http://jcpp.iut.ac.ir/browse.php?a_code=A-10-1-388&slc_lang=fa&sid=1 S. Samak سارا سماک 100319475328460024784 100319475328460024784 No Shiraz University, Shiraz, Iran دانشگاه شیراز S. A. Kazemeini سید عبدالرضا کاظمینی kazemin@shirazu.ac.ir 100319475328460024785 100319475328460024785 Yes Shiraz University, Shiraz, Iran دانشگاه شیراز E. Tavakol الهه توکل 100319475328460024786 100319475328460024786 No Shiraz University, Shiraz, Iran دانشگاه شیراز