Response to selection for grain yield under maydis leaf blight stress environment in maize Zea mays

Year 2010, Volume: 3 Issue: 1, 121 - 127, 15.04.2010

Ibni Amin Khalıl Hidayat- Ur-rahman Durres Hahwar Iffat Nawaz Hidayat Ullah Farhan Alı

Abstract

Maydis leaf blight MLB , caused by Bipolaris maydis, is one of the most important diseases in maize. The objectives of this study were to quantify the progress for maydis leaf blight resistance improvement by estimating selection differential, expected and observed responses to selection after two cycles of S1 line recurrent selection, and to estimate heritability for various morphological and yield traits in "Azam" composite maize population. This study was conducted at the research farm of Agricultural University, Peshawar, Pakistan during summer 2006 and 2007. In cycle3 about one hundred S1 lines while in cycle-4 196 S1 lines of maize population Azam were evaluated under epiphytotic conditions along with their progenies in lattice square design with two replications. Highly significant variations were observed among the S1 lines for grain yield, MLB, plant height, ear height, ear length, kernel rows cob-1, and maturity traits in two cycles. In cycle-3 the expected and observed responses for grain yield 432, 2144 kg ha-1 , MLB -0.53, - 0.65 , plant height 1.65, 28cm , ear height -0.43, 10 cm , ear length 0.78, 5 cm , kernel rows cob-1 -0.29, 2 , pollen shedding -0.21, -5 days and silking -0.09, -4 days were observed, while in cycle-4 expected and observed responses were 715, 2762 kg ha-1 , -0.01, -0.13 , 1.15, 41 cm , 0.44, 23 cm , 1.17, 3 cm , 0.07, 1 , -1.23, -2 days and -1.39, -1 days for the above traits, respectively. In both cycles the heritability values were estimated for grain yield 0.50, 0.64 , MLB 0.84, 0.52 , plant height 0.62, 0.79 , ear height 0.63, 0.47 , ear length 0.58, 0.55 , kernel rows cob-1 0.63, 0.62 , pollen shedding 0.83, 0.83 and silking 0.72, 0.82 . The increased performance of the progenies of selected S1 lines manifests the efficiency of breeding program and suggests that S1 line recurrent selection would be the most efficient method for improving MLB resistance and grain yield simultaneously in maize population Azam.

Keywords

Bipolaris maydis , recurrent selection , observed response , heritability , Corn

References

• Abedon, B.G., and W.F. Tracy. 1998. Direct and indirect effects of full-sib recurrent selection for resistance to common rust (Puccinia sorghi schw.) in three sweet corn populations. Crop Sci. 38: 56-61.
• Agrios, G.N. 1997. Plant pathology. 4th Edition. Academic press, San Diego and London.
• Bekele, E., and D.R. Sumner. 1983. Epidemiology of southern corn leaf blight in continuous corn culture. Plant Disease 67: 738-742.
• Carangal, V.R., S.M. Ali, A.F. Koble, E.H. Rinke and J.C. Sentz. 1971. Comparison of S1 with testcross evaluation for recurrent selection in maize. Crop Sci. 11:658-661.
• Carson, M.L. 1998. Aggressiveness and presentation of isolates of Cochliobolus herterostrophus from North Carolina. Plant Disease. 9(82): 1043-1047.
• Carson, M.L., C.W. Stuber, and M.L. Senior. 2004. Identification and mapping of quantitative trait loci conditioning resistance to southern leaf blight of maize caused by Cochliobolus herterostrophus race O. Phytopathol. 94: 862- 867.
• Ceballos, H., J.A. Deutsch, and H. Gutierrez. 1991. Recurrent selection for resistance to E. turcicum in eight sub- tropical maize populations. Crop Sci. 31: 964-971.
• CIMMYT. 1985. Managing trials and reporting data for CIMMYT’s International Maize Testing Program. CIMMYT, El Batan, Mexico.
• De Leon, G. Granados, R.N. Wedderburn, and S. Pandey. 1993. Simultaneous improvement of downy mildew resistance and agronomic traits in tropical maize. Crop Sci. 33: 100-102.
• Devey, M.E., and W.A. Russell. 1983. Evaluation of recurrent selection for stalk quality in a maize cultivar and effects of other agronomic traits. Iowa State J. Res. 58:207-219.
• Gao, Z.S., H.W. Cai, and G.H. Liang. 2005. Field assay of seedling and adult plant resistance to southern leaf blight in maize. Plant Breeding. 124: 356-360.
• Guzman, P.S. and K.R. Lamkey. 2000. Effective population size and genetic variability in the BS11 maize population. Crop Sci. 40(2): 338-346.
• Hafiz, A. 1986. Plant diseases. Pak. Agric. Res. Council, Islamabad. 52 pp.
• Hinze, L.L. and K.R. Lamkey. 2003. Absence of epistasis for grain yield in elite
• maize hybrids. Crop Sci. 43:46- 56.
• Ihsan, H., I.H. Khalil, H. Rahman and M. Iqbal. 2005. Genotypic variability for morphological and reproductive traits among exotic maize hybrids. Sarhad J. Agri. 21 (4): 599-602.
• Jinhyon, S., and W.A. Russel. 1969. Evaluation of recurrent selection for stalk rot resistance in an open pollinated variety of maize. Iowa Stat J. Sci. 43: 229-237.
• John, H.P. 1991. Hybrid genetic complement and corn plant DK570. Dekalb Genetics Corporation, IL, USA.
• Khan, K. 1986. Study of different varieties of maize under traditional and modified management practices in Swat, NWFP. M.Sc. (Hons) Thesis, Deptt. Pl. Br. & Gen. NWFP Agri. Uni. Peshawar.
• Khan, K., F. Karim, M. Iqbal, H. Sher and B. Ahmad. 2004. Response of maize varieties to environments in two agro- ecological zones of NWFP: Effects on morphological traits. Sarhad J. Agri. 20 (3): 395-399.
• Lambert, R.J., and D.G. White. 1997. Disease reaction changes from tandom selection for multiple disease resistance in two maize synthetics. Crop Sci. 37: 66-69.
• Lee, E.A., a. Ahmadzadeh and M. Tollenaar. 2005. Quantitative genetic analysis of the physiological processes underlying maize grain yield. Crop Sci. 45(3):981-987.
• Levings, C.S., and J.N. Siedow. 1992. Molecular basis of disease susceptibility in the Texas cytoplasm of maize. Plant Mol. Biol. 19: 135-147.
• Mihaljevic, R.C., C.C. Schoon, H.F. Utz, and A.E. Melchinger. 2005. Correlation and QTL correspondence between line per se and testcross performance for agronomic traits in four populations of European maize. Crop Sci. 45: 114-112.
• MINFAL. 2007. Agriculture Statistics of Pakistan. Ministry of Food, Agric. and Livestock, Econ. Wing, Islamabad.
• Mulamba, N.N., A.R. Hallaeur, and O.S. Smith. 1983. Recurrent selection for grain yield in a maize population. Crop Sci. 23: 536-540.
• Penny, L.H., and S.A. Eberhart. 1971. Twenty years of reciprocal recurrent selection with two synthetic varieties of maize (Zea mays L.). Crop Sci. 11: 900-903.
• Rahman, H., F. Raziq, and S. Ahmad. 2005. Screening and evaluation of maize genotypes for southern leaf blight resistance and yield performance. Sarhad J. Agric. 2(21): 231-235.
• Shah, S.S., H. Rahman, I.H. Khalil, and A. Rafi. 2006. Reaction of two maize synthetics to maydis leaf blight following recurrent selection for grain yield. Sarhad J. Agric. 2(22): 263-269.
• Steel, R.G.D., and J.H. Torrie. 1984. Principles and Procedures of Statistics: A Biometrical Approach, 2nd Ed., McGraw Hill Book Co., New York.
• Sumner, D. R., and R. H. Littrell. 1973. Influence of tillage, planting date, inoculum survival, and mixed populations on epidemiology of southern corn leaf blight. Phytopathol. 64: 168-173.
• Tollenaar, M., A. Ahmadzadeh and E.A. Lee. 2004. Physiological basis of heterosis for grain yield in maize. Crop Sci. 44:2086-2094.
• Vales, M.I., R.A. Valar, P. Revilla, and A. Ordas. 2001. Recurrent selection for grain yield in two Spanish maize synthetic populations. Crop Sci. 41: 15-19.
• Wei, J.K., K.M. Lui, J.P. Luo, Y.O. Lee, and Standelman. 1988. Pathological and physiological identification of race ‘C’ of Bipolaris maydis in China. Phytopathol. 75: 550-554.
• Welsh. J. R. 1981. Fundamentals of plant breeding. John Wiley and Sons. Inc. pp 134-135.
• Weyhrich, R.A., K.R. Lamkey, and A. R. Hallauer. 1998. Effective Population Size and Response to S1-Progeny Selection in the BS11 Maize Population. Crop Sci. 38:1149–1158.