Do you want to publish a course? Click here

Genetic indicators of some quantitative traits in hybrids of barley (Hordeum vulgare L.)

المؤشرات الوراثية لبعض الصفات الكمية في هجن من الشعير (Hordeum vulgare L)

1452   1   32   0 ( 0 )
 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

A half diallel set of crosses among six highly diverse barley (Hordeum vulgare L.) genotypes were evaluated at Karahta station of field crops research (GCSAR) Damascus Governorate, during 2010-2011 and 2011-2012 seasons to study heterosis and combining ability components for plant height, grain yield per plant, number of spikes per plant, number of grains per spike and thousand kernel weight.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة التهجين نصف التبادلي بين ستة طرز وراثية من الشعير في محطة بحوث قرحتا التابعة للهيئة العامة للبحوث العلمية الزراعية في سوريا خلال الموسمين الزراعيين 2010-2011 و2011-2012. هدفت الدراسة إلى تقدير القدرة العامة والخاصة على التوافق وتأثيرات التهجين على صفات ارتفاع النبات، الغلة الحبية، عدد السنابل في النبات، عدد الحبوب في السنبلة، ووزن الألف حبة. أظهرت النتائج أن التباين الوراثي للطرز الوراثية وللقدرة العامة والخاصة على التوافق كان معنوياً في جميع الصفات المدروسة باستثناء القدرة العامة على التوافق لصفتي ارتفاع النبات ووزن الألف حبة. أشارت النتائج إلى أهمية الفعل الوراثي اللاتراكمي في وراثة الصفات المدروسة. تميز الأب (M-6455) بأفضل قدرة عامة على التوافق لصفتي الغلة الحبية وعدد الحبوب في السنبلة، بينما تميز الأب (S-6689) بصفة عدد السنابل في النبات. كما أظهرت الهجن (T-6669×S-6303) أفضل قدرة خاصة على التوافق لصفة الغلة الحبية.
Critical review
تعتبر الدراسة مفصلة وشاملة في تحليلها للقدرة العامة والخاصة على التوافق وتأثيرات التهجين على الصفات المختلفة للشعير. ومع ذلك، يمكن أن تكون هناك بعض النقاط التي تحتاج إلى تحسين. أولاً، كان من الممكن تقديم تحليل أعمق للعوامل البيئية وتأثيرها على النتائج، حيث أن الظروف البيئية قد تلعب دوراً كبيراً في التعبير عن الصفات الوراثية. ثانياً، كان من الممكن تضمين المزيد من التفاصيل حول الطرق الإحصائية المستخدمة لتحليل البيانات، مما يساعد على تعزيز موثوقية النتائج. أخيراً، كان من الممكن توسيع نطاق الدراسة ليشمل المزيد من الطرز الوراثية والهجن للحصول على نتائج أكثر شمولية.
Questions related to the research
  1. ما هي الصفات التي تم دراستها في هذه البحث؟

    تم دراسة صفات ارتفاع النبات، الغلة الحبية، عدد السنابل في النبات، عدد الحبوب في السنبلة، ووزن الألف حبة.

  2. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو تقدير القدرة العامة والخاصة على التوافق وتأثيرات التهجين على الصفات المختلفة للشعير.

  3. أي الطرز الوراثية أظهرت أفضل قدرة عامة على التوافق لصفة الغلة الحبية؟

    الأب (M-6455) أظهر أفضل قدرة عامة على التوافق لصفة الغلة الحبية.

  4. ما هي النتائج المتعلقة بالقدرة الخاصة على التوافق لصفة الغلة الحبية؟

    الهجن (T-6669×S-6303) أظهرت أفضل قدرة خاصة على التوافق لصفة الغلة الحبية.


References used
Abeledo, L. G, Calderini, D. F. and Slafer, G. A. 2002. Physiological changes associated with genetic improvement of grain yield in barley. Food Products Press, an Imprint of the Haworth Press, Inc. New York, 361-386
Al-Shalaldeh, G and Duwayri, M. A. 1986. Inheritance of morphophysiological characters and grain yield in durum wheat crosses. Rachis, 5(1): 37-41
Bothmer, V. R, N, Jacobsen, C, Baden, R. B, Jorgensen and I, Linde-Laursen. 1991. Anecogeographical study of the genus Hordeum. International Boardfor Plant Genetic esources, Rome, 127 p
rate research

Read More

Six population seeds of three yellow maize hybrids were formed at Agricultural Research Center, Homs, during 2008 and 2009 growing seasons. Their plants were evaluated in 2010. The present work aims to determine the genetic parameters in six populati ons (P1, P2, F1, F2, BC1, and BC2). Mean square results showed significant differences among mean values for all traits in all crosses. Significant heterosis values were positive and relative comparing to mid and better parent for most traits. The potence ratios exceeded (+1) in all traits and crosses except ear height, indicating thus over-dominance. In breeding, depression values were significant in most traits for Cross-1, while their values were non- significant in all traits for Cross-2 except plant height, and also in Cross-3 except plant height and grain yield per plant. In most traits epestasis or dominance gene action occupied the first rank in the genetic effects in order of importance to cross, with the exception of number of rows per ear, number of kernels per row and grain yield per plant where additive gene action occupied the first rank for Cross-2 and Cross-1 respectively. Therefore, it could be suggested that selection for most studied traits in the subsequent generations will be relatively more effective than in the early generations.
The research was conducted at the Maize Researches Department, General Commission for Scientific Agriculture Researches (G.C.S.A.R.) Damascus, Syria during the summer growing seasons of 2010, 2011 and 2012. Treatments were arranged in a Randomized Complete Blocks Design with three replications. The research aimed to evaluate genetic parameters for some traits like days to 50% silking, plant and ear height, ear length, ear diameter, number of rows per ear, number of kernels per row, 100 kernel weight and grain yield per plant using generations means analysis of two maize hybrids (IL.292-06 × IL.565-06, IL.459-06 × IL.362-06) to detect epistasis and estimates of mean effect [m], additive [d], dominance [h], additive × additive [i], additive × dominance [j] and dominance × dominance [l] parameters. Results showed that the additive - dominance model was adequate to demonstrate the genetic variation and its importance in the inheritance of most studied traits. Nonallelic gene interaction was operating in the control of genetic variation in most studied traits. The signs of [h] and [l] were opposite in most studied traits for the two crosses. Also, the inheritance of all studied traits was controlled by additive and non-additive genetic effects, but dominance gene effects play the major role in controlling the genetic variation of the most studied traits, suggesting that the improvement of those characters need intensive selection through later generations. The phenotypic variations were greater than genotypic variations for all studied traits in the two crosses, indicating greater influence of environment in the expression of these traits. Highly significant heterosis relative to mid and better parents, respectively was found for all characters, and this accompanied with inbreeding depression for all traits. Narrow sense heritability and genetic advance were low in most of the traits due to the dominance of non-additive gene action in controlling the genetic variation of the most studied traits and this predict low to medium values of genetic advance through selection process.
The research aimed to evaluate the genetic diversity and the genetic relationship between 16 Hordeum vulgare genotypes (variaties and new lines), using SSR markers. 32 primer pairs were used in the analysis, five of them amplified primers monomorp hic alleles, while the remaining primers detected different alleles. A total of 126 polymorphic alleles were revealed by the 27 primer pairs. The number of different alleles detected on alocus ranged from 2 to 11with a mean of 4.66 alleles per locus. The polymorphic information content (PIC) values ranged from 0.21 to 0.88 with a mean value of 0.49, and the gene diversity ranged from 0.23 to 0.89 with a mean value of 0.53.The dendrogram was established using SSR data clustered into three major groups. The smallest genetic relationship was observed between line39 and line38 . The results proved the efficiency of SSR markers in the estimation of genetic diversity and in the clustering of the barley genotypes in Syria.
WI٢٢٩١ and Tadmor, two barley lines widely grown in the Mediterranean region were tested for powdery mildew (Erysiphe graminis f. sp. hordei) resistance together with the European differential tester set against six powdery mildew isolates. The si x cultures of powdery mildew developed from single colonies were comprised of four powdery mildew isolates originating from Syrian barley lines and two cultures originating from Danish barley lines.
This study present first estimates of segregation distortion as revealed by comparison of segregation ratios in DH lines and sexually produced F٢ lines in barley using the co-dominant microsatellite markers (STMS).

suggested questions

comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا