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Laboratory tests were carried out to investigate inherent quality differences among stored seeds of early, intermediate and late-maturing quality protein maize using completely randomized design (CRD) with three replications at the Seed Testing Laboratory of the Institute of Agricultural Research and Training, Obafemi Awolowo University, Moor Plantation, Ibadan, Nigeria for two consecutive years (2014 and 2015). From the results, germination and accelerated ageing germination traits were affected by the storage period. Similarly, the seed performance on germination, accelerated ageing and the conductivity test were seen to be better in early-maturing than in other maturing maize genotypes. The speed of germination measured as the germination index was low; ranging from 3.24-3.68 days after sowing (DAS) irrespective of the maturity group. Seedling traits measured after physiological quality tests were equally affected by the storage period and the maturity group. All the seedling traits measured were better in the early-maturing genotypes. Seed quality measured by laboratory quality assessments showed that genotypes in the early-maturing group are of high quality. Seeds of early-maturing genotypes retained significantly higher physical and physiological quality parameters and appear to have inherent potential to withstand effects of deterioration due to their slower rate of quality decline.
Huang S, Frizzi A, Florida CA, Kruger DE, Luethy MH. High lysine and high tryptophan transgenic maize resulting from the reduction of both 19- and 22-kD α- zeins. Plant Molecular Biology. 2006;61: 525-535.
Krivanek AF, Hugo D G, Nilupa SG, Alpha OD, Dennis F. Breeding and disseminating quality protein maize (QPM) for Africa. African Journal of Biotechnology. 2007; 6(4):312-324.
Mbuya K, Nkongolo KK, Kalonji-Mbuyi A, Kizungu R. Participatory selection and characterization of quality protein maize (QPM) varieties in savanna agro-ecological region of DR-Congo. Journal of Plant Breeding and Crop Science. 2010;2(11): 325-332.
Mbuya K. Nkongolo KK, Kalonji-Mbuyi A. Nutrition analysis of quality protein maize selected for agronomic characteristics in a breeding program. International Journal of Plant Breeding and Genetics. 2011;2(11): 325-332.
Olakojo SA, Omueti O, Ajomale K, Ogunbodede BA. Development of quality protein maize: Biochemical and agronomic evaluation. Tropical and Subtropical Agroecosystem. 2007;7:97-104.
Upadhyay S, Gurung DB, Paudel DC, Koirala KB, Sah SN, Prasad RC, Pokhrel BB, Dhakal R. Evaluation of quality protein maize (QPM) genotypes under rainfed mid hill environments of Nepal. Nepal Journal of Science and Technology. 2009;10:9-14.
Olaoye G, Bello OB, Olayiwola LS, Abubakar AY. Induced moisture deficit grain yield loss in drought tolerant maize germplasm accessions. Proceeding of the 29th Annual Conference of the Genetics Society of Nigeria. 11th-14th October. University of Agriculture, Abeokuta, Nigeria. 2004;176-182.
Olaoye G, Bello OB, Ajani AK, Ademuwagun TK. Changes in quantitative and qualitative characters in the segregating F2 population of sweet corn (Zea mays L.) crosses. Proceeding of the 30th Annual Conference of the Genetics Society of Nigeria. 5-6 September. University of Nigeria, Nsukka, Nigeria. 2005;74-84.
ISTA. International rules for seed testing. Handbook of vigor test methods. 3rd. Ed ISTA, Zurich. Switzerland; 2007.
Marcos-Filho J. Seed physiology of cultivated plants. ABRATES, Londrina, PR, Brazil; 2016.
Salhuana W, Pollack LM, Ferrer M, Paratori O, Vivor G. Breeding potential of maize accessions from Argentina, Chile, USA and Uruguay. Crop Science.1998;38: 866-872.
Burris JS. Physiology of seed development and deterioration in genetic improvement of seed quality. CSSA Spec. Publ. 36 CSSA. Madison, WI; 2000.
World Seed Congress Declarations. Available:http://www.seedtest.org/upload/cms/user/DECLERATION FROM THE SECOND WORLD SEED CONFERENCE. WEBI.Pdf Retrived: 10th March, 2010].2009
Zhu S, Hong D, Yao J, Zhang X, Luo T. Improving germination, seedling establishment and biochemical characters of aged hybrid rice seed by priming with KNO3 + PVA. African Journal of Agricultural Research. 2010;5:78-83.
Delouche JC. Seed quality and performance Seed news: The international seed magazine; 2004. Available:http:/www.seednews.inf.br/ingles/archives.shtml (Retrieved online March 13, 2010)
ISTA. International rules for seed testing. Basserdorf, Switzerlands International Seed Testing Association; 2015.
Ghassemi-Golezani K, Bakhshy J, Raey Y, Hosseinzadeh-Mahootchy A. Seed vigor and field performance of winter oilseed rape (Brassica napus L.) cultivars. Notulae Botanicae Horti Agrobotanici Cluj-Napoca. 2010a;38:146-150.
Maguire JD. Seed quality and germination in A.A. Khan (ed.). The physiology and biochemistry of seed dormancy and germination. Amsterdam: North Holland Publishing Company; 1977.
Shah FS, Watson CE, Meredith ND, Bohn PA, Martin B. Effect of bean ladder usage on mechanical damage during soybean seed conditioning. Seed Technology. 2001;23:92-97.
Olasoji JO, Aluko AO, Adeniyan ON, Olanipekun SO, Olosunde AA, Okoh JO. Effect of time of harvest on physiological maturity and kenaf (Hibiscus canabinus) seed quality. African Journal of Plant Science. 2012;6(10):282-289.
Rodriguez MV, Barrero JM, Corbineau F, Gubler F, Bened-Arnold RL. Dormancy in cereals (not too much, not so little): about the mechanism behind this trait. Seed Science Research. 2015;25:99-119.
ISTA. International Rules for Seed Testing. Seed Science and Technology. 1993; 21(Suppl.)
Hampton JG, TeKrony DM. Handbook of seed testing vigor test methods. Zurich, International Seed Testing Association; 1995.
SAS Institute. SAS/STAT user’s guide, Version 8, SAS Inst., Inc., Carg; 2002.
TeKrony DM. REVIEW: Precision is an essential component of seed vigor testing. Seed Science and Technology. 2003;31: 435-447.
Ghassemi-Golezani K, Khomari S, Dalil B, Hosseinzadeh-Mahootchy A, Chadordooz-Jeddi A. Effects of seed aging on field performance of winter oil-seed rape. Journal of Food, Agriculture and Environment. 2010b;8:175-178.
Gupta A, Aneja KR. Seed deterioration in soybean varieties during storage- physiological attributes. Seed Research. 2004;32:26-32.
Arefi HM, Abdi N. Study of variation and seed deterioration of Festuca ovina germplasm in natural resources genebank. Iranian Journal of Rangelands and Forests Plant Breeding and Genetic Resources. 2003;11:105-125.
Mahesha CR, Channaveeraswami AS, Kurdikeri MB, Shekhargouda M, Merwade MN. Storability of sunflower seeds harvested at different maturity dates. Seed Research. 2001;29:98-102.
Vandamme C, Pypers, P, Smolders E, Merckx R. Seed weight affects shoot and root growth among and within soybean genotypes beyond the seedling stage. Implications for low P tolerance screening. Plant Soil. 2016;101:65-78.
Huang M. Morphological and physiological traits of seeds and seedlings in two rice cultivars with contrasting early vigour. Plant Production Science. 2017;20:95- 101.
Munamava MR, Goggi AS, Pollak L. Seed quality of maize inbred lines with different composition and genetic backgrounds. Crop Science. 2004;44: 542–548.
Rozrokh M, Ghassemi-Golezani K, Javanshi A. Relation between seed vigour and field performance in chickpea (Cicer arietinum L.). Tehran Journal of Agriculture Research Seed and Plant Improvement Institute. 2002;18(2):156-162.
Thornton JM, Powell AA. Prolonged aerated hydration for the improvement of seed quality in Brassica oleracea L. Annals of Applied Biology.1995;127:183-189.
Verma SS, Verma U, Tomer RPS. Studies on seed quality parameters in deteriorating seeds in Brassica (Brassica campestris). Seed Science and Technology. 2003;31: 389-396.