مقایسه تحمل به شوری ژنوتیپ‌های رایج و اصلاح شده سورگوم علوفه‌ای (Sorghum bicolor L.) در دشت تبریز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان آذربایجان‌شرقی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تبریز، ایران

2 گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی تبریز

3 دانشگاه آزاد اسلامی تبریز

4 دانشگاه آزاد اسلامی واحد تبریز

5 مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان آذربایجان‌شرقی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تبریز، ایران

چکیده

به منظور بررسی تحمل به شوری ژنوتیپ­های سورگوم، آزمایشی به صورت اسپلیت پلات در قالب طرح بلوک­های کامل تصادفی در سه تکرار در مزرعه تحقیقاتی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی آذربایجان­شرقی اجرا گردید. نتایج تجزیه واریانس داده­ها نشان داد که بین ژنوتیپ­ها در تمامی صفات مورد بررسی به­جز طول برگ، نسبت وزن خشک برگ به ساقه و نسبت وزن تر ساقه به وزن تر کل بوته اختلاف معنی‌داری وجود داشته و تأثیر تیمار شوری بر روی صفات طول برگ، وزن تر و خشک برگ، وزن تر و خشک ساقه، نسبت وزن تر ساقه به وزن تر کل بوته معنی­داری بود. مقایسه میانگین داده‌ها نشان داد با اعمال تنش شوری مقدار این صفات کاهش یافتند. در این تحقیق، ژنوتیپ­های اصلاح شده پگاه و KFS2 نسبت به ژنوتیپ­های رایج وزن تر بوته، تعداد برگ، قطر ساقه، وزن تر برگ‌، وزن تر ساقه، وزن خشک برگ، وزن خشک ساقه و نسبت وزن تر برگ به کل بوته بیشتری داشتند اما، از نظر ارتفاع بوته ژنوتیپ پگاه و ژنوتیپ رایج جلفا بیشترین مقدار را به خود اختصاص دادند. تفاوت­های ژنوتیپ­ها از نظر صفات مختلف نشان دهنده وجود تنوع ژنتیکی مطلوب در بین ژنوتیپ­های مورد مطالعه سورگوم است.
 
 
 

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of Salinity Tolerance of Common and Improved Genotypes of Forage Sorghum (Sorghum bicolor L.) in Tabriz-plain

نویسندگان [English]

  • Hassan Monirifar 1
  • Varharam Rashidie 2
  • Maryam Hassanzadeh 3
  • Mozhghan Ghorbi 4
  • Saeid Ghassemi 5
چکیده [English]

In order to evaluate salinity tolerance in some sorghum genotypes, a split-plot experiment based on randomized complete block design with three replications was conducted at the Research Farm of East-Azarbaijan Agricultural and Natural Resources Research and Education Center, Tabriz, Iran. The results showed significant difference among genotypes in all studied traits, except for leaf length, leaf to stem dry weight ratio, and fresh weight of the stem to the total fresh weight ratio. Also, salinity treatment had significant effect on leaf length, leaf fresh and dry weight, stem fresh and dry weight, fresh weight of the leaf to the total fresh weight and fresh weight of the stem to the total fresh weight ratios. The mean comparison showed that these traits decreased by salinity stress. In this research, Pegah and KFS2 verities have more plant fresh weight, leaf number, stem diameter, leaf fresh weight, stem fresh weight, leaf dry weight, shoot dry weight and fresh weight of the leaf to the total fresh weight ratio in compared with common genotypes. But, Pegah and native Jolfa genotypes had the highest plant height. Differences between genotypes in different traits indicate the desirable genetic variation among the studied genotypes.
 

کلیدواژه‌ها [English]

  • Improved
  • Native
  • Genotype
  • Salinity
  • Sorghum
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