ارزیابی آزمایشگاهی مولفه‌های جوانه‌زنی لاین‌های مختلف کینوا (Chenopodium Quinoa Willd) تحت تنش شوری
محورهای موضوعی : تکنولوژی بذر
منیره ابویی
1
,
ناصر برومند
2
,
معصومه صالحی
3
1 - گروه علوم خاک، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران
2 - گروه علوم خاک، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران
3 - مرکز ملی تحقیقات شوری، سازمان تحقیقات آموزش و ترویج کشاورزی- یزد- ایران
کلید واژه: آب‌های بسیار شور, بنیه بذر, لاین, Chenoppdium quinoa,
چکیده مقاله :
کاشت گیاهان مقاوم به شوري مانند کینوا از جمله راهکارهای مناسب در جهت افزایش بهره‌وري از آب‌هاي شور می‌باشد. در همین راستا، به‌منظور ارزیابی اثر تنش شوری بر لاین‌های مختلف کینوا ، آزمایشی به صورت فاکتوریل و در قالب طرح کاملا تصادفی در چهار تکرار ، در سال 1398 اجرا گردید. تیمارهای آزمایشی شامل تنش شوری در پنج سطح (1، 10 30،20، 40 و 50 دسی زیمنس بر متر) و 4 لاین (NSRCQC, NSRCQB, NSRCQE, NSRCQG) و 3 رقم (تیتیکاکا، صدوق و رحمت) کینوا بودند. مؤلفه‌های جوانه‌زنی شامل درصد جوانه‌زنی نهایی، سرعت، زمان و یکنواختی جوانه‌زنی و مؤلفه‌های رشد گیاهچه شامل طول گیاهچه و شاخص طول بنیه گیاهچه و شاخص عرضی بنیه گیاهچه مورد بررسی قرارگرفته شد. نتایج نشان داد که افزایش سطح شوری سبب کاهش معنی‌داری در صفات جوانه‌زنی، سرعت جوانه‌زنی و طول گیاهچه شد. علاوه بر این، افزایش شوری باعث افزایش زمان جوانه‌زنی و افزایش شاخص طول بنیه گیاهچه شد. در کل لاینها از تحمل مناسبی تا سطح 30 دسی‌زیمنس بر متر برخوردار بودند. ولی با افزایش سطح شوری 40 و 50 دسی‌زیمنس بر متر از میزان تحمل آن‌ها کاسته شد. به طور کلی در تمام سطوح شوری رقم صدوق درصد جوانه‌زنی بالاتر و رقم رحمت بیشترین رشد گیاهچه را نسبت به سایر لاینها داشت.
Planting halophyte plants such as quinoa (Chenopodium quinoa Willd) is one of the best ways to increase the productivity of salty water. In this regard, in order to evaluate the effect of salinity stress on different lines of quinoa, a factorial experiment was carried out in the form of a completely randomized design in four replications in 2018.Experimental treatments include salt stress at five levels (control, 10, 20, 30, 40 and 50 dS/m) and four lines (NSRCQC, NSRCQE, NSRCQB, NSRCQG) and three cultivars (Titicaca , Sadogh, Rahmat) of quinoa. Germination components including final germination percentage, speed, time and uniformity of germination and seedling growth components including seedling length, seedling vigor length index and seedling vigor wieght index were investigated.The results showed that the increase in salinity level had a significant decrease in germination traits, germination speed and seedling length. in addition, the increase salt caused an increase in germination time and an increase in seedlinvigor length index.In general, the lines had good tolerance up to the level of 30 dS/m. But with the increase of salinity level of 40 and 50 decisiemens their tolerance decreased. Among the lines, the NSRCQD line had good tolerance and stability. So that up to the level of 40 and 50 dS/m, it had the highest amount in some traits.
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