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Register a new userEvaluation and Characterization of The Quantitative and Qualitative Traits in The Second Mutant Generation of Barley Variety Furat9
تقييم و توصيف بعض الصفات الكمية و النوعية في الجيل الطافر الثاني في صنف الشعير فرات 9
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تمَّت دراسة استجابة صنف الشعير فرات9 (ثنائي الصف) لجرعات متباينة من أشعة غاما (rays γ) (10,15,20 كيلو راد)، بهدف تقييم و توصيف الصفات الكمية و النوعية، و تحديد و حساب نسبة التغيرات الكلية و النسبية، و تحديد أفضل الجرعات المستخدمة من أشعة غاما، و دراسة علاقات الارتباط بين الصفات المدروسة في الجيل الثاني.
The response of barley variety Furat9 (tow-rowed), has been noted for three doses of Gamma radiation (10, 15, and 20 Kr). The objective of the research, to evaluate and characterize the quantitative and qualitative traits, to identify and calculate the proportion of the total and relative changes, to determine the best doses of Gamma rays, and to study the relationship among the traits in the second generation.
References used
FISCHBECK, G. Contribution of Barley to Agriculture: a Brief Overview. In: SLAFER, G. A; MOLIN-CANO, J. L; SAVIN, R; ARAUS, J. L; ROMAGOSA, I. eds., Barley science: recent advances from molecular biology to agronomy of yield and quality, Haworth, New York, 2002, 1–14
SARDUIE-NASAB, S; SHARIFI-SIRCHI, G. R; TORABI-SIRCH, M. H. Assessment of Dissimilar Gamma Irradiations on Barley (Hordeum vulgare ssp). Journal of Plant Breeding and Crop Science, Vol. 2, N. 4, 2010, 59-63
GUSTAFSSON, A. Mutation Experiments in Barley. Heriditas, Vol. 27, 1941, 225- 242
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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.
This research was conducted at Abu Jerash farm, Faculty of Agriculture,
Damascus University during 2011/2012 season to assess the effect of different
doses and concentrations of physical and chemical mutagens on some
quantitative and qualitative t
raits in the second generation (M2) of two
varieties of durum wheat.
Results showed significant differences (p<0.05) between the varieties,
treatments and the mutual interactions. Bowhoth 9 was superior in the average
of total number of changes (16.59%) compared with Doma1 (13.29%). The
total number of qualitative changes in the varieties studied was 14 types of
change, alternated and varied in appearance with the different doses and
concentrations of mutagens used. Bowhoth9 was superior in the average of
grain`s number (238.84), grains weight (11.89g) and the one thousand grain`s
weight (58.35g) in comparison with the parallel counterparts of averages
174.31, 7.06g, 54.38g, respectively in Doma1.
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 comb
ining ability components for plant height, grain yield
per plant, number of spikes per plant, number of grains per spike and
thousand kernel weight.
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 search carried out in Homs Agricultural Scientific
Research Center on the field of Eriobotrya Japonica during 2013
and 2014 using the naphthalene acetic acid (NAA) on two cultivars
of Eriobotrya Japonica of Cypriot origin (Karantoki and Morfou
)
growth on the native rootstocks and reduce fruit setting percentage,
the age of the trees 15 years, has been used material NAA
concentration 20 - 40 ppm.
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