correlation, regression and path analysis for grain yield and yield components on early maturing hybrids of grain corn

نویسندگان
چکیده

in order to investigate genetic correlation and path analysis between grain yield and yield components, fifteen early maturing hybrids of grain corn (zea. mays) using a randomized complete block design with 4 replications were evaluated in khoramabad agricultural research center, iran. the data were collected and analyzed for ear emergence date, anthesis date, maturity date, plant height, ear height, plant stand, ear cover, grain number per row, row number per ear, grain depth, 1000- grain weight, plant value, cob percent, grain yield, stay green, stem and leaf resistante to disease. the results showed grain yield was positively correlated with plant height, ear height, grain depth, row number per ear, grain number per row, but negatively with 1000-grain weight, ear cover, cob percent and stay green. between emergence date and maturity date and it was observed significant negative correlation stay green and leaf disease and  positive significant correlation with ear height, grain depth and ear cover, suggested that late maturing hybrids with higher productivity were more resistante to diseases. the results of regression and path analysis showed that 1000-grain weigh and cob percent were correlated with yield negatively, and grain depth, plant height and plant stand were positively (r2=0.52) and had higher effects on grain yield.

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

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...

correlation and path analysis of grain yield and its components for lentil under shahrekord climate

the purpose of this study was to describe the association between grain yield and its components. the experiment was conducted in a randomized complete block design with three replicatsions. results of analysis showed that similar trends were observed for genotypic and phenotypic correlations and in most cases, the value for genetic correlation was greater than phenotypic value. 100-seed weight...

متن کامل

Path Analysis of Grain Yield and Yield Components and Some Agronomic Traits in Bread Wheat

JANMOHAMMADI MOHSEN, SABAGHNIA NASER, NOURAEIN MOJTABA. 2014. Path Analysis of Grain Yield and Yield Components and Some Agronomic Traits in Bread Wheat. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 62(5): 945–952. Development of new bread wheat cultivars needs effi cient tools to monitor trait association in a breeding program. This investigation was aimed to charact...

متن کامل

Genetic Analysis of Grain Yield and Yield Components in Bread Wheat using Hayman's Diallel Method

Extended Abstract Introduction and Objective: By progeny trial after a diallel crossing, the function of genes and inheritance of quantitative traits can be estimated. This increases the ability to select parental lines, to participate in crosses, and determines the management of generations in the segregating populations. Material and Methods: In order to understand the genetic structure of ...

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:
پژوهش های تولید گیاهی

جلد ۱۶، شماره ۲، صفحات ۹۹-۱۱۲

کلمات کلیدی
[ ' i n o r d e r t o i n v e s t i g a t e g e n e t i c c o r r e l a t i o n a n d p a t h a n a l y s i s b e t w e e n g r a i n y i e l d a n d y i e l d c o m p o n e n t s ' , ' f i f t e e n e a r l y m a t u r i n g h y b r i d s o f g r a i n c o r n ( z e a . m a y s ) u s i n g a r a n d o m i z e d c o m p l e t e b l o c k d e s i g n w i t h 4 r e p l i c a t i o n s w e r e e v a l u a t e d i n k h o r a m a b a d a g r i c u l t u r a l r e s e a r c h c e n t e r ' , ' i r a n . t h e d a t a w e r e c o l l e c t e d a n d a n a l y z e d f o r e a r e m e r g e n c e d a t e ' , ' a n t h e s i s d a t e ' , ' m a t u r i t y d a t e ' , ' p l a n t h e i g h t ' , ' e a r h e i g h t ' , ' p l a n t s t a n d ' , ' e a r c o v e r ' , ' g r a i n n u m b e r p e r r o w ' , ' r o w n u m b e r p e r e a r ' , ' g r a i n d e p t h ' , 1 0 0 0 , ' g r a i n w e i g h t ' , ' p l a n t v a l u e ' , ' c o b p e r c e n t ' , ' g r a i n y i e l d ' , ' s t a y g r e e n ' , ' s t e m a n d l e a f r e s i s t a n t e t o d i s e a s e . t h e r e s u l t s s h o w e d g r a i n y i e l d w a s p o s i t i v e l y c o r r e l a t e d w i t h p l a n t h e i g h t ' , ' e a r h e i g h t ' , ' g r a i n d e p t h ' , ' r o w n u m b e r p e r e a r ' , ' g r a i n n u m b e r p e r r o w ' , ' b u t n e g a t i v e l y w i t h 1 0 0 0 ' , ' g r a i n w e i g h t ' , ' e a r c o v e r ' , ' c o b p e r c e n t a n d s t a y g r e e n . b e t w e e n e m e r g e n c e d a t e a n d m a t u r i t y d a t e a n d i t w a s o b s e r v e d s i g n i f i c a n t n e g a t i v e c o r r e l a t i o n s t a y g r e e n a n d l e a f d i s e a s e a n d x a 0 p o s i t i v e s i g n i f i c a n t c o r r e l a t i o n w i t h e a r h e i g h t ' , ' g r a i n d e p t h a n d e a r c o v e r ' , ' s u g g e s t e d t h a t l a t e m a t u r i n g h y b r i d s w i t h h i g h e r p r o d u c t i v i t y w e r e m o r e r e s i s t a n t e t o d i s e a s e s . t h e r e s u l t s o f r e g r e s s i o n a n d p a t h a n a l y s i s s h o w e d t h a t 1 0 0 0 ' , ' g r a i n w e i g h a n d c o b p e r c e n t w e r e c o r r e l a t e d w i t h y i e l d n e g a t i v e l y ' , ' a n d g r a i n d e p t h ' , ' p l a n t h e i g h t a n d p l a n t s t a n d w e r e p o s i t i v e l y ( r 2 = 0 . 5 2 ) a n d h a d h i g h e r e f f e c t s o n g r a i n y i e l d . ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023