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Register a new userVariance and genetic and phenotypic correlations among productivity and its components in Cotton
التباين و العلاقات الوراثية و المظهرية بين الإنتاجية و مكوناتها في القطن
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استخدمت سبعة طرز وراثية من القطن (حلب 133 ،حلب 90 ،رقة5 ،ديرالـزور22 ،حلـب118، حلب40 ،السلالة 124 (لدراسة تباين التراكيب الوراثية و معاملات الارتباط الوراثي و المظهري بين غلـة النبات الواحد و مكوناته (التبكير بالإزهار و النضج/يوم، ارتفاع النبات/سم، عدد الأفرع الخضرية و الثمرية، عدد الجوزات الكلي، وزن 100 بذرة (غ)، متوسط وزن قطن الجوزة الواحـدة (غ)، نـسبة التـصافي%، إنتاجية النبات الواحد/غ)، لاستخدامها كمؤشرات انتخابية للإنتاجية العالية في برامج التربية، تـم إجـراء التجربة في منطقة الغاب – محافظة حماه (ضمن حقل إنتاجي خاص) فـي الموسـم الزراعـي 2012- 2013 ،و استخدم تصميم القطاعات العشوائية الكاملة و بثلاثة مكررات.
Seven cotton genotypes (Rkka5, Aleppo1-33, Aleppo90 – Aleppo 118, Aleppo 40, Deir22, and Line124), were used to estimate variance and genetic and phenotypic correlations between seed cotton productivity and its components [earliness in flowering and maturity(day), plant height (cm), number of vegetative and reproductive branches, number of bolls per plant, 100 seed weight (g), average boll weight (g), lint percentage (%), and plant yield (g)], to be used as selection indices for higher yield performance in breeding programs. The experiment was carried out in Al-Ghab region (Hama) in 2012- 2013 growing season using randomized complete block design (RCBD) with three replications.
References used
Abd El Aziz, M. 1989. Effect of several rates of mineral fertilizers and plant density on yield and fiber quality of double cropping types> Ph.D. thesis, Tashkent. Agri.Inst.Pp 155
Abd elrahman, S.H. and A.H Abdalla. 1995. Investigations of character association in some upland cotton (Gossypium hirsutum L.) genotypes.i.Yield and yield components .Journal of Agricultural Sciences,3(1):1-12
Ahmad, M. and F. M. Azher. 2000. Genetic correlation and path coefficient analysis of oil and protein contents and other quantitative charcters in F2 generation of (Gossypium hirsutum L.). Journal of Biological Sciences. 3(6): 1049-1051
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This study was carried out at Karahta Station, Dept. of Field Crops
Researches, General Commission for Scientific Agriculture Researches
(GCSAR) Damascus, Syria, during the growing seasons (2009-2010, 2010-2011).
The crosses were grown inatrial us
ing randomized complete block design
(RCBD) with three replicates in order to evaluate number of spikes per plant,
number of grains per spike, thousand kernel weight and grain yield per plant
and estimate some genetic indices: broad scenes heritability (BSH), narrow
scenes heritability (NSH), and genetic advance (GA). Seeds of five populations
of the three evaluated single hybrids were formed by crossing of five inbred
lines. Analysis of variance results showed significant differences among mean
values of the five populations of each cross for all studied traits. The results
revealed that the broad scenes heritability ranged between high and moderate
for the following productivity traits (SP/PL, GR/SP, TKW and GY/P) and it
was (75, 40, 57) (38, 80, 38) (74, 60, 85) and (73, 73, 71) for the three crosses,
respectively. Additive gene action noticed on most traits indicated less selection
cycles to improve these traits.
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.
The experiment was conducted at Tayba Research Station, General
Commission for Scientific Agricultural Research during 2011-2012, and 2012-
2013 growing seasons. Randomized block design with three replications was
used to investigate phenotypic va
riances and to determine correlation of yield
components of six local genotypes of radish. Significant differences between
genotypes were appeared in diameter, length and weight of radish root. The
correlation analysis revealed that root weight was positively and significantly
correlated with both yield (0.964) and root diameter (0.274). Yield was
positively and significantly correlated with root diameter (0.382). Root length
was positively and significantly correlated with plant height (0.333) and
number of leaves (0.329) per plant.
This study was carried out in cooperation between the Faculty of
Agriculture, Damascus University and the General Commission for Scientific
Agricultural Research (GCSAR) in Karahta station of field crops researches
during two growing seasons (2003
-04 & 2004-05).
Four local improved barley lines and cultivars (female parents) were
crossed with five exotic lines and cultivars (male parents) using line × tester
method. The crosses were grown along with their parents in a randomized
complete block design (RCBD) with three replications to estimate general
combining ability (GCA), specific combining ability(SCA) and both mid and
high parent heterosis for number of spikes per plant, number of grains per
spike, thousand kernel weight, and grain yield per plant.
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.
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