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Register a new userStudy of genetic behavior of some early maturing and high yielding mutant lines of soybean in different locations
دراسة السلوكية الوراثية لبعض طفرات فول الصويا الإشعاعية المنتخبة للباكورية و الإنتاجية في مواقع بيئية مختلفة
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Damascus University ورقة بحثية
Publication date
2007
fields
Field Crops
and research's language is
العربية
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هدفت هذه الدراسة إلى التأكد من ثباتية السلالات الطافرة من فول الصويا في مواقع بيئيـة مختلفـة و إلى انتخاب السلالات الأفضل في كل موقع. انتخبت هذه السلالات و البالغ عددها 15 سلالةً استناداً إلـى تجارب سابقة لكونها باكورية أو ذات إنتاجية أعلى من الشاهد. استمرت الدراسة ثلاث سنوات متتالية و في ثلاثة مواقع بيئية مختلفة هي: الرقة – إدلب – اللاذقية. زرعت التجارب عبر السنوات و المواقع وفق تصميم القطاعات العشوائية الكاملـة RCBD مـن ثلاثـة مكررات. أظهرت النتائج وجود فروق معنوية بين كل من السلالة و المواقع و السـنة فـي صـفتي الباكوريـة و الإنتاجية و كان التآثر (سلالة × موقع) و (سلالة × سنة) معنوياً في كل من الباكورية و الإنتاجية. أما بالنسبة للباكورية فكان التآثر (سلالة × سنة) غير معنوي، و لوحظت نتيجة معاكسة للإنتاجيـة. علماً أن تآثرات (مواقع × سنة) للإنتاجية و الباكورية كانت معنوية. و كـان للباكوريـة علاقـة إيجابيـة و معنوية مع جميع الصفات (باستثناء وزن المئة بذرة). و كانت الإنتاجية ذات علاقة إيجابية و معنوية مـع جميع الصفات. انتخبت ثلاث سلالات ذات إنتاجية أعلى من الشاهد بنحو (6.142 %) و لا تختلف عنـه بالباكوريـة، و انتخب 4 سلالات أبكر من الشاهد.
This study aimed at checking the stability of some mutant lines from soybean varieties in different locations and to select the best performing lines in each location. These lines 15 were selected according to previous experiments as being early maturing and/or that yield higher than the control. The study lasted three years, the experiment plants were grown in 3 locations: Raqa, Idleb and Lattakia. The experiment was designed as RCBD with 3 replicates for each variety. Results showed significant difference between lines, Locations and year in both earliness and yield, A significant interaction was realized between (line X location) and (line X year) for earliness and yield. For earliness (line X year) was not significant. The reverse situation was realized for yield. Location. X year of yield and earliness was significant. Earliness was correlated positively with all characters (except for 100-seed-weight). Yield was positively and significantly correlated with characters of all lines. Three lines with higher yield than the control (142.61%) and same maturity time were selected.
References used
Akhter, M. and Sneller, C. H. (1996). Yield and yield components of early maturing soybean genotypes in the Mid-South. Crop Sci. 36 : 877-882
Allen, F.L., Comstock, R. E., and Ramusson, D.C. (1978). Optimal environments for yield testing. Crop Sci. 18 : 747-751,19
Ashley, D. A., and Boerma, H. R. (1988). Effects of row spacing and branchytic growth habits on soybean canopy photosynthesis, plant height and seed yield. P. 103. In Agron. Abstracts. ASA, Madison, WI
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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.
Eleven genotypes of Bread Wheat (Triticum aestivum L.) were tested at three diverse
locations in the Syrian Coast during the 2015-2016 season under rain-fed conditions to
assess these genotypes and to study the Genotypes x Environments Interactions
, and yield
stability across environments using 5 statistical measures of stability:{ X¯i, bi, and i
according to Eberhart and Russell (1966), Stability Variance Index (2
i) according to
Wricke and Weber (1980), Ecovalance Stability Index (Wi) according to Wricke (1962)}.
Genetic material included 5 promising lines and 6 local varieties (provided by ACSAD and
GCSAR).The experiment was designed using randomized complete block design with
three replications, statistical data analysis was done, and least significant difference
(L.S.D) test at 5% was applied for comparison of means. Significant differences were
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to genotypes, environments and genotypes x environments interaction, suggesting
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analysis.
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properties, estrogenic activity, or a combination of both mechanisms.
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This study was carried out in cooperation between the Faculty of
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lines + Two soybean lines) (Single Zea mays crop), (Single soybean
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