Authors:L. Hřivna, L. Homola, I. Burešová, and P. Smutná
The research was conducted to describe distribution of protein fractions in wheat (Triticum aestivum L.) mill products (semolina, flour and bran) and evaluate the possibility of prediction of protein fractions distribution from values of bread-making quality (protein and gluten content, Zeleny sedimentation volume) evaluated on wholemeal and specific flour. The content of protein fractions was determined by size-exclusion high performance liquid chromatography. Significantly highest glutenin content was found in flour (5.01%). The investigated mill products did not differ in gliadin content, the content of albumin/globulin fraction reached the highest values in bran (3.60%). The model of prediction of glutenin and gliadin content in mill products explained 31–62% and 83–92% of the original variability. The protein fractions distribution in wheat mill products could be satisfactorily predicted from known values of protein and gluten content evaluated on wholemeal and Zeleny sedimentation volume evaluated on specific flour.
Gene effects were analyzed using mean excised-leaf water loss and relative water content of 12 populations viz., both parents (P
, first back cross generations (BC1 and BC2), second back cross generations (B
) and back cross-selfed generations (B
s and B
s) of four crosses involving three drought tolerant and three drought susceptible cultivars of
L. to determine nature of gene action governing excised-leaf water loss (ELWL) and relative water content (RWC) through generation mean analysis under rainfed (E1) and irrigated (E2) environments. Both additive-dominance and digenic epistatic model were found to be inadequate in all the crosses for ELWL and in most of the crosses for RWC to explain genetic variation among the generation means. Additive gene effects were predominant for RWC, while for ELWL both additive and dominance component of variance were important. Epistatic effects, particularly dominance × dominance (1) type of interaction was more predominant for RWC, while additive × additive(i) for ELWL. Duplicate type of epistasis was observed in the crosses Hindi 62/HS240 and VL421/HS240 for RWC and in the cross S4/HPW89 for ELWL under both the environments. Complementary type of epistasis was observed only in the cross VL421/PBW175 for ELWL under E1. Hybridization systems, such as biparental mating and/or diallel selective mating could be useful for improvement of these traits which would help in isolating drought tolerant progenies.
Börner, A., Schumann, E., Fürste, A., Cöster, H., Leithold, B., Röder, M.S., Weber, W.E. 2002. Mapping of quantitative trait loci determining agronomic important characters in hexaploid wheat (
TriticumaestivumL.). Theor. Appl. Genet.
A field experiment was conducted to investigate the effect of soil application of zinc fertilizer on yield and yield components of wheat (
L. cv. Inqlab 91) grown on calcareous soil in Pakistan. The levels of zinc sulphate were 0 (control), 5, 10, 15, 20, 25 and 30 kg ha
and the zinc sulphate was combine-drilled at the time of sowing. Zinc sulphate increased the Leaf Area Index, the total number of fertile tillers m
, number of spikelets spike
, spike length, grain spike
, thousand grain weight, grain yield, straw yield and biological yield and decreased harvest index. Most of the response trends were curvilinear although the decrease in harvest index was linear. All applications of zinc sulphate gave economic increases in margins over costs but the application of 5 kg ha
gave the highest marginal rate of return. It is recommended that under such calcareous soil conditions growers can expect good returns from the application of 5 kg zinc sulphate ha
at the time of sowing but if the grain price were to increase or the price of zinc sulphate were reduced economic responses could be expected from higher levels of zinc sulphate.
. N. , Ma , H. Z. , Jia , P. X. , Wang , J. , Jia , L. Y. , Zhang , T. G. , Yang , Y. L. , Chen , H. J. , Wei , X. ( 2012 ) Responses of seedling growth and antioxidant activity to excess iron and copper in TriticumaestivumL
Authors:A. Eser, K.M. Kassai, H. Kato, V. Kunos, A. Tarnava, and M. Jolánkai
level and split/undivided doses application of nitrogen fertilisation. 1 Materials and methods In years 2017 and 2018, a field trial of high milling and baking quality winter wheat ( TriticumaestivumL .) varieties were set up under identical