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Variability, correlation and path coefficient analysis of some yield traits in hybrids of durum wheat (Triticum durum L.)

التباين و الارتباط و تحليل معامل المسار لبعض صفات الغلة في هجن من القمح القاسي

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 Publication date 2014
  fields Field Crops
and research's language is العربية
 Created by Shamra Editor




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This study was carried out at Karahta Station of Field Crop Research, General Commission of Agricultural Scientific Researches during 2010-2011 and 2011-2012 cropping seasons in order to determine the phenotypic correlation coefficient between the traits and the path coefficients analysis for the most affected traits in grain yield.


Artificial intelligence review:
Research summary
تناولت الدراسة تحليل التباين والارتباط ومعامل المسار لبعض صفات الغلة في هجن من القمح القاسي. أجريت التجارب في محطة بحوث قرحتا خلال موسمي 2010-2011 و2011-2012 بهدف تحديد معاملات الارتباط المظهري بين الصفات وتحليل معامل المسار للصفات الأكثر تأثيراً في الغلة الحبية. زرعت الهجن الثلاثة والطرز الأبوية وبذور الجيل الأول والثاني في الموسم الأول بمواعيد زراعية متباعدة بفاصل أسبوع، وتم تحقيق الهجن الرجعية. في الموسم الثاني، زرعت العشائر الست لكل هجين وفق تصميم القطاعات العشوائية الكاملة بثلاث مكررات. أظهرت النتائج اختلافات معنوية عالية بين الصفات المدروسة، حيث أظهرت صفة الغلة الحبية ارتباطاً موجباً وغير معنوي مع عدد الحبوب في النبات وطول فترة امتلاء الحبوب ووزن الألف حبة، بينما كان ارتباطها سلبياً ومعنوياً مع نسبة البروتين في الحبوب. أظهرت نتائج تحليل معامل المسار أن الصفات الأكثر مساهمة في الغلة الحبية هي طول فترة امتلاء الحبوب وعدد الحبوب في النبات ونسبة البروتين ووزن الألف حبة. بناءً على ذلك، يمكن تحسين الغلة الحبية من خلال تحسين مكونات الإنتاج المذكورة أعلاه.
Critical review
دراسة نقدية: الدراسة قدمت تحليلاً شاملاً للعوامل المؤثرة في الغلة الحبية للقمح القاسي، ولكن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الأفضل توسيع نطاق الدراسة لتشمل مواسم زراعية إضافية لتأكيد النتائج. ثانياً، لم تتناول الدراسة تأثير العوامل البيئية بشكل كافٍ، مما قد يؤثر على دقة النتائج. ثالثاً، كان من الممكن استخدام تقنيات تحليلية أكثر تقدماً مثل التحليل الجينومي لتحديد الجينات المسؤولة عن الصفات المدروسة. على الرغم من هذه النقاط، فإن الدراسة تعد إضافة قيمة للأبحاث في مجال تحسين إنتاجية القمح القاسي.
Questions related to the research
  1. ما هي الصفات الأكثر مساهمة في الغلة الحبية وفقاً للدراسة؟

    الصفات الأكثر مساهمة في الغلة الحبية هي طول فترة امتلاء الحبوب، عدد الحبوب في النبات، نسبة البروتين، ووزن الألف حبة.

  2. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو تحديد معاملات الارتباط المظهري بين الصفات وتحليل معامل المسار للصفات الأكثر تأثيراً في الغلة الحبية.

  3. ما هي النتائج الرئيسية لتحليل معامل المسار؟

    أظهرت نتائج تحليل معامل المسار أن الصفات الأكثر مساهمة في الغلة الحبية هي طول فترة امتلاء الحبوب، عدد الحبوب في النبات، نسبة البروتين، ووزن الألف حبة.

  4. ما هي النقاط التي يمكن تحسينها في الدراسة؟

    يمكن تحسين الدراسة بتوسيع نطاقها لتشمل مواسم زراعية إضافية، تناول تأثير العوامل البيئية بشكل كافٍ، واستخدام تقنيات تحليلية أكثر تقدماً مثل التحليل الجينومي.


References used
Abinasa, M A. Ayana, and G. Boltosa. 2011. Genetic variability, heritability and trait associations in durum wheat (Triticum turgidum L. var. durum) genotypes. African Journal of Agricultural Research, 6(17): 3972-3979
Ahmadi, H and B. Bajelan. 2008. Heritability of drought tolerance in wheat. American-Eurasian Journal Agricultural Environ Science, 3(4): 632-635
AL-koddoussi, A. R. and E. E. Hassan. 1991. Heterosis in relation to general and specific combining ability in durum wheat (Triticum turgidum var. durum). Zagazig Journal Agricultural Research 18 (1): 2-9
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This study was carried out through the cooperation between Faculty of Agricultural Damascus University and General Commission of Agricultural Scientific Researches in Karahta station of field crops researches during 2010- 2011 and 2011-2012 succes sive seasons. Four hybrids of durum wheat namely (Duma1*Sauady), (Buhuth9*Q88), (Sham7*Q130) and (Horaney*Q131) were evaluated to estimate heritability, genetic advance, heterosis and inbreeding depression for days to heading ,grain filing period, plant height, number of spikes per plant, and number of grains per plant. The mean average for all these traits revealed highly significant differences among crosses. Low in protein content trait (23-69%), medium in grain yield per plant (38-70) and high heritability in thousand kernel weight (62-81%) were found. All hybrids showed the highest for both mid and better parents heterosis for protein content and gluten traits. High heritability was accompanied by high genetic advance for thousand kernel weight. Low heritability was coupled with low genetic advance for grain yield per plant, protein content and gluten. However, greater magnitude of heritability coupled with higher genetic advance in some traits provided that these parameters were under the control of additive genetic effects. This indicates that selection should lead to fast genetic improvement of the material. Moreover, the high genetic correlations for most of the traits, suggested a strong inherent association among these traits at the genetic level. Thus these traits deserve better attention in future breeding programs for evolving better wheat in stress environments.
The present investigation was conducted during 2010/2011 and 2011/2012 growing seasons at Karahta station for field crops research, General Commission for Scientific Agricultural Researches (G.C.S.A.R.), Syria. Forty five hybrids F1 produced using a half diallel cross among ten bread wheat (Triticum aestivum L.) genotypes, in 2010/2011 season, were evaluated during 2011/2012 season in order to study som of the genetic parameters for grain yield per plant, its components, some morphophysiological and quality traits to determine the basic criteria for selection.
In a study conducted at Research Center of Dara'a, General Commission for Scientific Agricultural Research during two growth seasons 2007/2008 and 2008/2009. 11 faba bean (Vicia faba L.) populations were planted in an experiment designed randomize d complete blocks design with three replications. The objectives were investigation of phenotypic variance among populations studied, to determine the relationship among number of yielded branches plant -1, number of pods plant -1 , number of seeds pod -1, 10- green pod weight (g) and yield of green pods plant -1 (g) using correlation and path coefficient analysis. The combined analysis of variance showed highly significant differences among populations under study and for all characteristics studied, except number of yielded branches plant-1 where differences were only significant. The correlation and path analysis studies revealed that negative and highly significant relationship was found between number of yielded branches plant -1 and yield of green pods plant-1, while was positive and highly significant between yield of green pods plant-1 and 10-green pod weight. All direct effects of components studied were negative in both seasons, except 10-green pod weight, and these results suggested adopting the last component as a selection index during making selection of high yielding genotypes in faba bean populations. .
This study was carried out at Karahta station of field crops research department General Commission for Scientific Agriculture Researches (G.C.S.A.R.) Damascus Syria during the 2009 -2010 and 2010 -2011 growing seasons to estimate gene action, p otency ratios, heterosis and Inbreeding depressions. Five population seeds of two single hybrids (Cham-5 × Azeghar-1), (Bohoth-5 × Gidara-2) were formed by crossing of four inbred lines. The crosses were subjected to randomized complete block design (RCBD) with three replications in order to evaluate plant height (PH), number of grains per spike (GRSP), flag leaf area (FLA), thousand kernel weight (TKY) and grain (p<0.05) yield per plant (GYP). Mean square results showed significant differences among mean values of the five populations for all studied traits in all crosses. Significant heterosis values compared to mid and better parent were observed for all traits with exception of (PH) (5.82, 1.62)%, (GRSP) (27.49 9.66)% and(TKY) (3.05 7.53)% for Cross-1. (GYP) (82.46, 96.63)% for Cross- 2. (GRSP) (9.09 5.14)%. The potency ratios exceeded (+1) in all traits and crosses except (PH) (-2.23) for Cross-2. Indicating that over-dominance towards low placement. The results indicated that Inbreeding depression values were significant for all traits in Cross-1 except for (GRSP) (10.33), and (TKY) (15.23). While its values were non- significant for all traits inCross-2except (GRSP) (25.46*). In most traits epestasis or dominant gene action occupied the first rank in controlling these traits in both crosses. It could be suggested that selection for most studied traits in the subsequent generations will be relatively more effective than in early generations.
The present investigation was undertaken to estimate phenotypic correlation and path coefficient analysis for grain yield and its components in maize. Four local genotypes of yellow maize were evaluated in 2008 and 2009 growing seasons at two loca tions i.e. Damascus and Dir Al-Zor under three nitrogen fertilization levels (130, 195 and 260 of N. ha-1), The nitrogen fertilizer was applied at two splits. Split split plot design was used with 4 replications. Results of phenotypic correlation values showed that grain yield at Damascus location was positively and significantly associated with ear height (r= 0.204**), ear length (r= 0.205**) and number of rows per ear (r= 0.228**). On the other hand, grain yield at Dir Al-Zor location was positively and significantly associated with all studied traits at combined data whereas, it was positively and significantly associated with ear length at three levels and combined data (0.305*, 0.410**, 0.347** and 0.375**, respectively). The data of path coefficient analysis showed that ear length, ear height and number of rows per ear had positive direct effects on grain yield variation and thus grain yield improvement can be achieved through selection for ear length and ear height at Damascus location (11.06%). On the other side, data showed that each of ear height, number of kernels per row and 100-kernel weight had positive direct effects on grain yield variation (32.98%) and thus, 100-kernel weight can be considered as selection criteria may lead to the improvement of grain yield in yellow maize at Dir Al-Zor location.

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