Document Type : Research Paper
Author
Abstract
Background and Objectives
Triticale is a crop species resulting from a plant breeder's cross between wheat (Triticum) and rye (Secale). Plant breeders originally wanted to include the combination of grain quality, productivity, and disease resistance of wheat with the vigor and hardness of rye. Triticale is mainly introduced as a crop which is more adapted under low-potential condition than the wheat and other small cereals. Triticale could be used as a feed grain. As a feed grain, triticale is already well established and of high economic importance. The aim of a triticale breeding program is mainly focused on the improvement of quantitative traits, such as grain yield, nutritional quality and plant height, as well as traits which are more difficult to improve, such as earlier maturity and improved test weight. In order to study the relationship between grain yield and its related traits and to select high yielding lines of triticale, this research was carried-out in a low-potential condition.
Material and Methods
This research was conducted in Ahvaz Agricultural Research station during 2013-2014 cropping season, with 36 lines, using α-lattice design with two replications. Fertilizers were used based on soil test results. Each line was planted in six 6-meter rows with 0.2 meter spacing in Nov.8 and irrigation was done immediately. Days from germination to heading, physiological maturity and ripening stages, and grain yield and its components were determined. Genetic variation coefficient was calculated based on GC={[(Vg-Ve)/r]/M}×100, equation in which GC, Vg, Ve, r and M are genetic variation coefficient, phenotype variance, variance of error, replication and mean trait, respectively. Data were analyzed using MSTATC software.
Results
Results indicated that genotypes were significantly different for all traits. Ranges of days from germination to ear emergence and physiological maturity were 89-103 and 129-141 respectively. T he highest grain yield (4790 Kg.ha-1) and grain crop growth rate (14.1 g.m-2.day-1) was belonged to line No.29. The highest genetic variation coefficients were obtained from days from germination to ear emergence (43.6%) and biological yield (36.4%). Range of mean grain yield was 1898-4652 Kg/ha and lines No,:5, 8, 15, 17, 20, 22, 23, 26 and 29 with grain yields 4494, 3748, 3820, 3777, 3757, 3717, 4007, 3780 and 4651 Kg.ha-1 respectively, were selected for advanced trails.
Discussions
Regarding high similarity among grain yields with both grain growth rate (95%) and biological yield (86%) in cluster analysis and high genetic variation of the mentioned traits, the lines with both high biological yielding and grain growth rate were evaluated as the optimum genetic sources for breeding programs of triticale. Lines with both traits have capability to accumulate high amount of dry matter and to allocate a large proportion of this dry matter to grains.
Keywords
Main Subjects
- Busemeyer, L., Ruckelshausen, A., Moller, K., Melchinger, A.E., Alheit, K.V., Maurer, H.P., Hahn, V., Weissmann, E.A., Reif, J.C., and Wurschum, T. 2013.
Precision phenotyping of biomass accumulation in triticale reveals temporal genetic patterns of regulation. Scientific Research Report, 3: 5-13. - Ghandi, M., Mehrabi, A., and Agha-Rokh, A. 1998. Study and comparison of yield of dual purpose cereals. Final Report Seed and Plant Improvement Institute. 32 p. [In Farsi]
- Ghooshchi, F., Siadat, S.A., and Hashemi-Dezfooli, S.A. 2003. Study of yield and yield components of crop population and main stem of six triticale cultivars and Karoon barley cultivar. Journal of Agriculture Science, 2(8): 55-63. [In Farsi]
- Goral, H., Tyrka, M., and Spiss, L. 2005. Assessing genetic variation to predict the breeding value of winter triticale cultivars and lines. Journal of Applied Genetics, 46(2): 125-131.
- Guinta, F., Motzo, R., and Deidda, M. 1993. Effect of drought on yield and yield component of durum wheat and triticale in a Mediterranean environment. Field Crops Research, 33: 339-409.
- Karpenstein, M.M. and Heyne, J. 1992. Yield and yield structure of winter cereals triticale and wheat in the middle mountain areas of northern Hessen. Aerobiological Research, 45: 88-96.
- Khadarahmi, M., Amini, A., and Bihamta, M.R. 2007. Study of the relationship
between traits and path analysis of grain yield of triticale. Journal of Agriculture
Science, 1(1-37): 77-83. [In Farsi] - Kotschi, J., 2007. Agricultural biodiversity is essential for adapting to climate change. GAIA - Ecological Perspectives for Science and Society, 16: 98-101.
- Malakooti, J. 1997. Yield increasing by nutrient optimization in order to achieving sustainable agriculture in Iran. 5th Iranian Congress of Soil Sciences. Karaj, Iran. 3 p. [In Farsi]
- Okuyama, L.A. 1990. Grain yield and yield components of triticale and wheat as a function of water stress. In forme- de- Pesquisa Instituto Agronomico-de-Parana, 14: 53-56.
- Ozakan, H., Genc, I., Yagbasanler, T., and Toklu, F. 1999. Stress tolerance in hexaploid spring triticale under Mediterranean environment. Plant Breeding, 118: 365-367.
- Sayre, K.D., Rajaram, S., and Fischer, R.A. 1997. Yield potential progress in short bread wheats in northern Mexico. Crop Science, 37: 36-42.
- Smith, R.L., Schweder, M.E., and Barnett, R.D. 1994. Identification of gluten in ales in wheat and triticale using PCR generated DNA markers. Crop Science, 34: 1373-1378.
- Stacey, P., O’Kiely P. Hackett, R., Rice, B., and O’Mara, F.P. 2006. Changes in yield and composition of barley, wheat and triticale grains harvested during
advancing stages of ripening. Irish Journal of Agricultural and Food Research, 45: 197-209. - Williams, J.T. 1995. Cereals and pseudo cereals. Published by Chapman and Hall. 2-6 Boundary Row. London. SE18. HN. UK. pp: 187-214.
- Yagbasanlar, T. and Ozkan, H. 1995. Correlation and path coefficient analysis for ear characters in triticale under Mediterranean climatic condition. Crop Science, 174: 297-300.
- Yahaya, Y. 2014. Estimate of genetic variability and correlation coefficients for some quantitative characters in bread wheat (Triticum aestivum). World Journal of Agricultural Sciences, 2(7): 163-167.
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