Studies on genetic variability in maize (Zea mays L.) under stress and non-stress environmental conditions
Paper Details
Studies on genetic variability in maize (Zea mays L.) under stress and non-stress environmental conditions
Abstract
Studies were carried out to estimate the extent of genetic variability in fifty six maize (Zea mays L.) genotypes (6 drought tolerant inbred lines, 7 other inbred lines, 42 crosses and a check) under non-stress and water stress at flowering. The genotypes were evaluated in 2012/2013 dry season across two locations, to obtain more information on their genetic and morphological diversity. The experimental design used was simple lattice design with two replications under each condition. Significant mean squares were obtained for the seven traits measured under non-stress and water stress in the combined analysis across locations. Differences observed in means of most traits studied were high. The highest mean value of 5877.80 kg/ha was produced the hybrid S3 x P2 for grain yield under non-stress across location while under water stress the hybrid S7 x P8 had maximum grain yield of 5877.80 kg/ha. The effect of drought stress on morphological traits was drastic and it significantly reduced the expression of most traits. Overall, plant height, ear height, number of ears per plant and grain yield were reduced by 15 %, 20 %, 28 % and 70 %, respectively, whereas, days to 50 % tasseling, days to 50 % silking and anthesis-silking interval increased by 5 %, 6 % and 33 %, respectively, under water stress. These findings will be useful in planning breeding programmes to develop improved maize varieties, synthetics and hybrids tolerant to drought for use by farmers and industries.
Acquaah G. 2007. Principles of plant genetics and breeding. Oxford, UK: Blackwell publishing Ltd, 146-151.
Ajala SO, Ago CE, Olaoye G. 2009. Comparison of predicted responses to three types of recurrent selection procedures for the improvement of maize (Zea mays L.) population. Journal of plant breeding and crop science 1, 289-292.
Allard RW, Bradshaw AD. 1964. Implications of genotype-environmental interactions in applied plant breeding. Crop Science 4, 503-508
Ashofteh BM, Ebrahimi M, Mostafavi K, Golbashy M, Khavari KS. 2011. A study of morphological basis of corn (Zea mays L.) yield under drought stress condition using correlation and path coefficient analysis. Journal of cereals and oilseeds 2, 32-37.
Badu-Apraku B, Fakorede MAB, Menkir A, Kamara AY, Dapaah S. 2005. Screening maize for drought tolerance in the Guinea savanna of West and Central Africa. Cereal Research Communique 33, 533-540.
Banziger M, Diallo AO. 2004. Progress in developing drought and N stress tolerant maize cultivars for Eastern and Southern Africa. In: Friesen, D.K. and Palmer, A.F.E. ed. Integrated Approaches to Higher Maize Productivity in the New Millenium. Proceedings of the 7th Eastern and Southern Africa Regional Maize Conference, 5-11 February, 2002. CIMMYT/KARI, Nairobi, Kenya, 189-194.
Banziger M, Edmeades GO, Beck D, Bellon M. 2000. Breeding for Water stress and N Stress Tolerance in Maize: From Theory to Practice. CIMMYT, Mexico, D.F., Mexico, 1-67.
Bassetti P, Westgate ME. 1993. Senescence and receptivity of maize silks. Crop Science 33, 275-278.
Betran FJ, Beck D, Banziger M, Edmeades GO. 2003. Genetic analysis of inbred and hybrid grain yield under stress and non-stress environments in tropical maize. Crop Science 43, 807- 817.
Bolanos J, Edmeades GO. 1993. Eight cycles of selection for drought tolerance in tropical maize. II. Responses in reproductive behaviour. Field Crops Research 31, 253-268.
DeVries J, Toenniessen G. 2001. Securing the harvest: biotechnology, breeding and seed systems for African crops. Wallingford, UK: CABI Publishing.
Duncans D. 1955. Multiple range and multiple F-tests. Biometrics 11, 42.
Hussain I, Ahsan M, Saleem M, Ahmed A. 2009. Gene action studies for agronomic traits in maize under normal and water stress conditions. Pakistan Journal of Agricultural Science 46, 108-112.
Maleki A, Fazel S, Naseri R, Rezaei K, Heydari M. 2014. The effect of potassium and zinc sulphate application on grain yield of maize under drought stress conditions. Advances in environmental biology 8, 890-093.
NeSmith DS, Ritchie JT. 1992. Effects of soil water deficits during tassel emergence on development and yield components of maize (Zea mays L.). Field Crops Research 28, 251-256.
Saleem S, Tahir HN, Saleem U. 2011. Study of genetic variability in maize inbred lines under irrigated and drought conditions. International journal agriculture and applied science 3, 80-85.
SAS Institute Inc. 2004. SAS/STAT 9.1 user’s guide. SAS Institute Inc., Cary, 5121.
USAID. 2010. Packages of practice for maize production. United States Agency for International Development, 23.
USDA. 2010. World of corn. Washington, DC: United States Department of Agriculture, 7-8.
U.U. Umar, S.G. Ado, D.A. Aba, S.M. Bugaje (2015), Studies on genetic variability in maize (Zea mays L.) under stress and non-stress environmental conditions; IJAAR, V7, N1, July, P70-77
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