effects of foliar application of plant growth promoting rhizobacteria on forage and grain yield of forage sorghum (var. speedfeed)

نویسندگان

رضا کشاورز افشار

دانشجوی دکتری پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا چائی چی

دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران علی علیپور جهانگیری

دانشجوی سابق کارشناسی ارشد دانشگاه شهید بهشتی محیا انصاری جوینی

دانشجوی کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین مقدم

چکیده

to evaluate the effects of pgpr foliar spraying on forage and grain yield of forage sorghum (var. speedfeed), a farm experiment was conducted in research farm of college of agriculture, university of tehran in 2009. the experimental design consisted of a randomized complete blocks consisting of 17 treatments in every block. in this research, the effect of foliar application of 16 different strains of pgpr including pseudomonas putida and pseudomonas fluorescents in three growth stages (3-leaf stage, 8-leaf stage and commencement of ear) were compared to control. the results showed that bacterial foliar application treatments significantly promoted growth and development of plants (forage yield, plant height, leaf area and grain yield) compared to control. according to the results of this experiment p. putida strain 11 increased forage yield of sorghum up to 32%. this bacteria could produce the highest leaf area amoung other treatments. in the other hand, p. putida strain 10 had a destructive effect on forage growth and caused a 10 % decrement in forage yield compared to control. however, this bacteria could produce the highest stem height, grain yield and harvest index among the other treatments. the results of this experiment showed that foliar application of pgpr (especially p. putida strain 11) have a high potential to promote plant growth and yield of forage sorghum var. speed feed.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

effects of different plant growth promoting rhizobacteria (pgpr) application methods on forage production in sorghum (sorghum bicolor var. speed feed)

to evaluate the effect of different application methods of different strains of pgpr on sorghum forage production, a field experiment was conducted in research farm of college of agriculture of university of tehran in karaj during 2009. the treatments were arranged factorially and the data was analyzed based on a complete block design with three replications. the treatments comprised of three p...

متن کامل

effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars

این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...

Effects of salt stress on some growth parameters and chemical contents of two forage sorghum lines

Abstract Soil salinity has been recognized as the most serious problems for agriculture in arid and semi-arid areas of the world. To evaluate the changes in some  growth parameters  and chemical composition of two forage sorghum (Sorghum bicolor var. sudanense  lines (KFS1, KFS2) under salinity stress [0 (control), 3, 6, 9, 12 dS/m of sodium chloride], a pot experiment was carried out at Colleg...

متن کامل

QTL mapping of forage yield and forage yield component traits in Sorghum bicolor x S. sudanense.

The sorghum-sudangrass hybrid (Sorghum bicolor x S. sudanense) is an important forage crop. However, little is known about the genetic mechanisms related to forage yield and the 4 forage yield component traits in this forage crop. In this study, a linkage map was constructed with 124 assigned SSR markers using an F2 mapping population derived from the crossing of sorghum Tx623A and sudangrass S...

متن کامل

Non Chemical Management of Weeds Effects on Forage Sorghum Production

To assess the effect of non chemical management of weed control on forage Sorghum (Sorghum bicolor) a field study was conducted in Varamin, Iran during 2010 crop year in a three- replicated- split factorial experiment laid out in randomized complete block design with four weeding levels (W1= one time cultivation at 3-leaf stage using a duck foot cultivator, W2<...

متن کامل

Evaluation of yield of promising dual purpose grain- forage sorghum lines (Sorghum bicolor L. Moench) using drought tolerance indices

To evaluate and select the promising lines of dual purpose grain-forage sorghum under drought stress conditions, a field experiment assplit plot arrangements in randomized complete block design with three replications was carried out atresearch field station of Seed and Plant Improvement Research Institute, Karaj, Iran, in 2014 and 2015 growing seasons. Irrigation levels (60 mm, 120 mm and 180 ...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
علوم گیاهان زراعی ایران

جلد ۴۲، شماره ۳، صفحات ۵۷۵-۵۸۴

کلمات کلیدی
[ ' t o e v a l u a t e t h e e f f e c t s o f p g p r f o l i a r s p r a y i n g o n f o r a g e a n d g r a i n y i e l d o f f o r a g e s o r g h u m ( v a r . s p e e d f e e d ) ' , ' a f a r m e x p e r i m e n t w a s c o n d u c t e d i n r e s e a r c h f a r m o f c o l l e g e o f a g r i c u l t u r e ' , ' u n i v e r s i t y o f t e h r a n i n 2 0 0 9 . t h e e x p e r i m e n t a l d e s i g n c o n s i s t e d o f a r a n d o m i z e d c o m p l e t e b l o c k s c o n s i s t i n g o f 1 7 t r e a t m e n t s i n e v e r y b l o c k . i n t h i s r e s e a r c h ' , ' t h e e f f e c t o f f o l i a r a p p l i c a t i o n o f 1 6 d i f f e r e n t s t r a i n s o f p g p r i n c l u d i n g p s e u d o m o n a s p u t i d a a n d p s e u d o m o n a s f l u o r e s c e n t s i n t h r e e g r o w t h s t a g e s ( 3 ' , ' l e a f s t a g e ' , 8 , ' l e a f s t a g e a n d c o m m e n c e m e n t o f e a r ) w e r e c o m p a r e d t o c o n t r o l . t h e r e s u l t s s h o w e d t h a t b a c t e r i a l f o l i a r a p p l i c a t i o n t r e a t m e n t s s i g n i f i c a n t l y p r o m o t e d g r o w t h a n d d e v e l o p m e n t o f p l a n t s ( f o r a g e y i e l d ' , ' p l a n t h e i g h t ' , ' l e a f a r e a a n d g r a i n y i e l d ) c o m p a r e d t o c o n t r o l . a c c o r d i n g t o t h e r e s u l t s o f t h i s e x p e r i m e n t p . p u t i d a s t r a i n 1 1 i n c r e a s e d f o r a g e y i e l d o f s o r g h u m u p t o 3 2 % . t h i s b a c t e r i a c o u l d p r o d u c e t h e h i g h e s t l e a f a r e a a m o u n g o t h e r t r e a t m e n t s . i n t h e o t h e r h a n d ' , ' p . p u t i d a s t r a i n 1 0 h a d a d e s t r u c t i v e e f f e c t o n f o r a g e g r o w t h a n d c a u s e d a 1 0 % d e c r e m e n t i n f o r a g e y i e l d c o m p a r e d t o c o n t r o l . h o w e v e r ' , ' t h i s b a c t e r i a c o u l d p r o d u c e t h e h i g h e s t s t e m h e i g h t ' , ' g r a i n y i e l d a n d h a r v e s t i n d e x a m o n g t h e o t h e r t r e a t m e n t s . t h e r e s u l t s o f t h i s e x p e r i m e n t s h o w e d t h a t f o l i a r a p p l i c a t i o n o f p g p r ( e s p e c i a l l y p . p u t i d a s t r a i n 1 1 ) h a v e a h i g h p o t e n t i a l t o p r o m o t e p l a n t g r o w t h a n d y i e l d o f f o r a g e s o r g h u m v a r . s p e e d f e e d . ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023