Do you want to publish a course? Click here

Estimation of statistical genetic parameters and heritability for oil, protein and yield traits in soybean hybrids (Glycine max (L.) Merr.)

تقدير المعايير الوراثية و درجة التوريث لصفات الزيت و البروتين و الغلة في هجن من فول الصويا

1324   1   16   0 ( 0 )
 Publication date 2013
  fields Field Crops
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

The present study was conducted at the First of May Station belongs to the General Commission For Scientific Agricultural Research (GCSAR) at Damascus during 2011 and 2012 growing seasons to estimate gene action, heritability, genotypic and phenotypic coefficient variations (GCV, PCV) and genetic advance for two crosses of soybean. The five population (P1, P2, F1, F2, F3) of each cross were grown in a randomized complete block design (RCBD) with three replications in order to evaluate oil and protein contents and seed yield traits. Results of mean square analysis showed significant differences (p<0.05) among mean values of the five populations for all studied traits between the populations of each cross. The second cross achieved high broad and narrow sense heritability (66%, 44%) for protein content, high value of phenotypic and genotypic variations in seed yield in the second cross achieved (18.03,17.30) and high value of expected genetic advance was obtained 11.09%. In most traits, epistasis of the dominance × dominance type of gene action occupied the first rank in order of importance in controlling inheritance of the evaluate traits in both crosses indicating the importance of selection in late segregating generations to improve these traits. These findings are supported by high values of heritability, which was related with low to moderate expected genetic advance in two crosses.


Artificial intelligence review:
Research summary
أجريت الدراسة في محطة بحوث واحد أيار التابعة للهيئة العامة للبحوث العلمية الزراعية في دمشق خلال الموسمين 2011 و2012، بهدف تقدير الفعل المورث ودرجة التوريث والتقدم الوراثي لهجينين من فول الصويا. زرعت العشائر النباتية الخمس لكل هجين (P1، P2، F1، F2، F3) في تجربة بتصميم القطاعات الكاملة المعشاة بثلاث مكررات لتقييمها بالنسبة لصفات نسبة الزيت ونسبة البروتين والغلة البذرية. أظهرت نتائج تحليل التباين وجود فروق معنوية بين عشائر كل هجين لكل الصفات المدروسة. حقق الهجين الثاني أعلى قيمة لدرجة التوريث بالمعنيين الواسع والضيق (66%، 44%) لمحتوى البروتين، وأعلى قيم للتباين المظهري والوراثي في صفة غلة النبات الفردي (18.03، 17.30) على الترتيب. كما حقق الهجين الثاني أعلى قيمة للتقدم الوراثي المتوقع بالانتخاب (11.09%). أشارت النتائج إلى أهمية الفعل المورث التقوقي من النمط سيادي × سيادي في التحكم بوراثة الصفات المدروسة، مما يشير إلى أهمية الانتخاب في الأجيال الانعزالية المتأخرة لتحسين هذه الصفات.
Critical review
دراسة نقدية: الدراسة تقدم معلومات قيمة حول الفعل المورث ودرجة التوريث والتقدم الوراثي في هجن فول الصويا، مما يساهم في تحسين برامج التربية النباتية. ومع ذلك، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تضمنت تحليلاً أعمق لتأثير العوامل البيئية على الصفات المدروسة. كما أن الاعتماد على موسمين فقط قد لا يكون كافياً لتقديم نتائج دقيقة وثابتة. بالإضافة إلى ذلك، كان من الممكن أن تكون الدراسة أكثر فائدة إذا تضمنت مقارنة مع نتائج دراسات سابقة في مناطق أخرى أو تحت ظروف بيئية مختلفة.
Questions related to the research
  1. ما هي الأهداف الرئيسية للدراسة؟

    هدفت الدراسة إلى تقدير الفعل المورث ودرجة التوريث والتقدم الوراثي لهجينين من فول الصويا بالنسبة لصفات نسبة الزيت ونسبة البروتين والغلة البذرية.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج وجود فروق معنوية بين عشائر كل هجين لكل الصفات المدروسة، وحقق الهجين الثاني أعلى قيمة لدرجة التوريث بالمعنيين الواسع والضيق لمحتوى البروتين، وأعلى قيم للتباين المظهري والوراثي في صفة غلة النبات الفردي، وأعلى قيمة للتقدم الوراثي المتوقع بالانتخاب.

  3. ما هو الفعل المورث الذي كان له الأهمية الأكبر في التحكم بوراثة الصفات المدروسة؟

    الفعل المورث التقوقي من النمط سيادي × سيادي كان له الأهمية الأكبر في التحكم بوراثة الصفات المدروسة.

  4. ما هي التوصيات التي قدمتها الدراسة بناءً على النتائج؟

    أوصت الدراسة بأهمية الانتخاب في الأجيال الانعزالية المتأخرة لتحسين الصفات المدروسة في هجن فول الصويا.


References used
Allard, R. W. 1960. Principles of plant breeding. New York, John Wiley, PP. 485
Aravind, G.2006. Genetic Variability and Diversity Studies in Soybean [Glycine max (L.) Merrill] .PhD. thesis. College of Agriculture، Dharwad University of Agricultural Sciences
Barona, M. A. A., J. M C. Filho, V. S. Santos and I. O. Geraldi. 2012. Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill]. Crop Breeding and Applied Biotechnology, 12: 231-236
rate research

Read More

This research has been carried out at the experimental Station of Agriculture Faculty, Damascus University during the period of 1998-2000. Five parents were selected from the Cotton Office Germplasm (Aleppo40, Raqua5, Dir22, Daltabain50, 88G6104) to examine the inheritance of some morphophysiological, yield, and quality related traits. In1998, the five parents were hand-crossed in all combinations (with no reciprocals) generating ten F1 hybrids. During 1999, the ten crosses and their parents were planted to produce F2 seeds. In 2000 the F1s, F2s, and their parents were grown in a randomized complete block design with two replications. Heritability estimates in broad sense showed that the earliness traits possess the highest values, followed by total and actual bolls number, indicating the importance of additive gene action in the inheritance of these traits. Whereas, heritability values for other traits were markedly different, revealing the genetic diversity of these hybrids parents. High estimates of expected genetic advance were found to be associated with high heritability estimates for total and actual bolls number, indicating that direct selection should be effective for these traits. On the other hand, improvement of traits, possessing intermediate estimates of genetic advance and high heritability estimates, such as total bolls number, harvest index, flowering earliness and fiber elongation in some studied hybrids, through direct selection might be less effective. The results suggest that traits with high heritability estimates associated with low estimates of genetic advance; and those possess intermediate estimates of heritability and genetic advance or low estimates of both parameters are most likely controlled by non-additive genes, therefor, direct selection might not be effective for improving these traits.
The experiment was grown in a Randomized Complete Blocks Design with three replications during two seasons. Generations means analysis method was used to study the genetic parameters for number of days to heading, number of days to maturity, plant height, number of spikes per plant, number of grains per spike and grain yield per plant of two bread wheat crosses Triticum aestivum L. (Gairwel7 x Douma4), (Azaz1 x Soued), Results have shown that both additive and dominance genetic effects were high significant in most evaluated traits, with predominance of the dominance genetic effects’ values. Also, epistatic genetic effects have contributed to inheritance of most studied traits. The signs of dominance and dominance x dominance were opposite in most examined traits indicating duplicate epistasis for all studied traits of the first cross and for number of days to maturity, plant height and number of grains per spike of the second cross, that indicates that the selection for these traits should be delayed after several generations. High phenotypic variations were composed of high genotypic variations and less of environmental variations, indicating the presence of high genetic variability for different traits and less influence of environment. Highly significant heterosis relative to mid and better parents in F1 was recorded for most characters, accompanied with inbreeding depression for all traits in F2. Narrow sense heritability and genetic advance were low in most cases due to the dominant of non-additive genetic action in controlling the genetic variation of the most studied traits.
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 objective of this study is to compare the effect of five different Nacl concentration (0,50,100,150,200 mM) on seeds germination and seedling growth of two cultivars of soybean (sb-44,sb-172). Seeds were germinated in petri dishes with sterile filter paper moistened with 10 ml of test solution at 25 c˚ in dark . The obtained results showed that germination percentage , length of root and hypocotyl were decreased with the increase of the Nacl concentration in the medium. The best values was from cultivar sb-44 . After seven days of incubation , significant differences were observed between control and treated seeds . Germinated seeds were subcultured on basal Murashige and Skoog medium solid at the same Nacl concentration . The roots growth was mor affected by 200 mM Nacl compared to seedling growth . Plantlets were transfered into pots with nutrient soil , irrigated with saline water and were adapted at laboratory . we obtained good plants grew to maturity in 10- 12 weeks .
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