Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userالسلوك الوراثي لبعض صفات الإنتاجية لدى هجينين من القطن
1469
1 6
0
(
0
)
Authors
مها لطفي حديد( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
أجريت هذه الدراسة بغرض تحديد السلوك الوراثي لمكونات غلة القطن: عدد الأفرع الثمرية/ نبـات، و عدد الجوز/ نبات، و وزن الجوزة/ غ، و معدل الحليج، و ذلك من خلال تقدير بعض المقـاييس الوراثيـة كقوة الهجين و التدهور الناشئ عن التربية الذاتية و درجة التوريث بمفهوميها (الواسع و الضيق) و الـربح الوراثي المتوقع بفعل عملية الانتخاب في انعزالات الجيل الثاني. نفذت الدراسة باسـتخدام أربعـة طـرز وراثية محلية هي: (حلب40-حلب33/ 1-حلب90-سلالة 118) و الهجينين الناتجين عنهم (حلـب40 × حلب90) و (حلب33/ 1 ×سلالة 118) حيث تم اختبار الآباء، و إنتاج نباتات الجيل الأول، و نباتات الجيـل الثاني، و الهجن الرجعية للأب الأول و الثاني في محطة تجارب كلية الزراعة – جامعة دمشق فـي الفتـرة الواقعة بين 2002 – 2004 .
During the three successive seasons of 2002, 2003, and 2004 six populations, viz.,P1,P2,F1,F2,BC1, and BC2 of two single crosses of cotton (Aleppo40 x Aleppo90) and (Aleppo33/1 x Line118) were established and evaluated to explore heterosis, inbreeding depression, heritability and genetic advance under selection for reproductive branches number, number of bolls per plant, boll weight, and ginning percentage. Significant positive heterotic effects were found for all the studied traits in two crosses except ginning percentage (in the second cross). Significant positive heterosis over mid-parent and higher parent for yield components (number of bolls per plant and boll weight) may lead to a positive heterosis for seed cotton yield/plant.
References used
Al-Enani, F. A. and Y. T. Atta. (1986). Genetic analysis of some economic characters in cross in Egyptian cotton. Bulletin of Faculty of Agriculture, Cairo Univ., Egypt. 37(1), 309-319
Burton, G. W. (1951). Quantitative inheritance in pearlmillet (Pennisetum glaucum). Agron. J. 43, 409-417
Choudhari, P. N. and Borole. D. B. (1992). Hybrid vigor in deshi: cotton. Maharastra. J. 17 (2), 202-204
rate research
Read More
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.
Seven cotton varieties (Rakka 5, Aleppo133, Aleppo 90, Aleppo 118, Aleppo 40,
Deir 22, and Line124) were used in the study of some quantitative characteristics of cotton
yield and its components (seed cotton weight per boll/g, 100seed/g weight aver
age, lint
percentage %, seed cotton weight per plant/g, total dry matter weight, seed cotton yield per
unit area kg/ha), and physiological qualities (leaf area cm2, leaf area index %). The seven
varieties were grown in Salhab (Al-Ghab region, Hama) in 2012 using randomized
complete block design with three replications.
The study included estimating variance, broad sense heritability, genetic progress,
and genetic correlation between cotton yield and its components, which is to be used in
breeding programs.
Nine Syrian cotton genotypes i.e. Aleppo 33/1, Aleppo 118, Aleppo 90, Aleppo 40,
Aleppo 124 Rakka5, Deir Al-Zour 22, Line 106 and Rusafa, were used for statistical
and genetic analysis for productivity and some chemical indicators of seeds:
Lint p
ercentage%, cotton weight per plant/g, percent of oil in seeds and pulp, percent
of protein in seeds and pulp, percent of humidity in seeds and pulp, to explore
the potentiality of the genotypes in the studied region, and to establish a program
for the production of cotton and seeds, also to determine the selective indecies to be
used to improve cotton productivity and seed components, using randomized complete
block design with three replications. The experiment was conducted in Salhab
village, Al-Ghab region, Hama governorate, Syria, during 2015 season.
Succes of a breeding program depends, to a great extent, on understanding
the gentic behavior of the traits. This investigation was conducted to study and
examine the inheritance of some economically important characters such as:
total bolls numbe
r, actual bolls number, ginning percentage , boll weight,
harvest index, flowering earliness, maturity earliness, plant height,and fiber
fineness.
Seven cotton varieties ( Rakka5, Aleppo133, Aleppo90, Aleppo118 , Aleppo40,
Deir22, Line124) were grown in village Salhab ( Al-Ghab region , Hama) in 2012 using
randomized complete block design with three replications. were used to study estimation
of variance, broad sense heritability, genetic progress and correlation some of their
technological characters (Staple length mm, Length uniformity% , Fiber fineness
%(micronaire), trength Fiber(g/tex), Fiber elongation%, fiber maturity%), that’s to explore
potentials Genotypes in search region and put the numerous selectoral evidence in order to
obtain an additive and fast improve on the technological characters,
The study showed significant differences between in the studied genotypes, for
most of the considered traits.
The study suggested a variation of the values of Heritability, Genetic advance in the
characteristics technological of cotton., the highest Heritability of which was in the Staple
length and than trength Fiber, Fiber elongation , Fiber fineness, fiber maturity, Length
uniformity, characteristics where the inheritance degree reached (0.98, 0.97, 0.89,
0.80,0.75, 0.30) , genetic development% (1.03, 1.35, 0.36, 1.31,1.22, 0.11).
The results also showed a positive significant correlation between Staple length and
trength Fiber (r = 0.901**), also between Fiber elongation with fiber maturity and Length
uniformity ( r = 0.64**, r = 0.422**), and this gives us the area and ease of movement to
put the numerous selectoral evidence in order to improve the technological characters of
cotton.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
