Study of Parental Polymorphism in various types of selected Maize Genotypes by using SSR Markers

Hanuman subrahmanyam Nimmagadda, Naveena Chenchala

Abstract


Maize (Zea mays L.) is an important cereal and fodder crop which occupy a pivotal role in the world economy White and Johnson, 2003(16). Maize is currently produced on nearly 100 million hectares in 125 developing countries and is among the three most widely grown crops in 75 of those countries FAOSTAT 2010(4). Between now and 2050, the demand for maize in the demand for maize in the developing world will double, and by 2025, maize production is expected to be highest globally, especially in the developing countries Rosegrant et al., 2009(11). Important challenge that threatens the long-term production growth of maize is changing global climate Cairns et al., 2012(1). Moreover, it is a model system for the study of genetics, evolution, and domestication. Indo-china region being a centre of diversity is endowed with great variability in terms of morphological characters, especially, growth habit, maturity including shape and size Rubatzky and Yamaguchi,1997(12). Detailed knowledge of the relationships between maize breeding lines is important not only for parental selection but also for genetic analysis and breeding system design Hallauer et al, 1998(5). Unless there is sufficient genetic diversity in the germ plasm, it is practically not possible to increase the yield and other desirable characters of a crop, because the selection of improved genotypes depends on the availability of genetic variability within the breeding material. To improve genetic diversity of local germ plasm, it is important to know the extent of already existing genetic variability in the material Islam and Shepherd, 1991(6).

References


 Dr. M.MAHESWARI, Head of Crop Sciences, CRIDA, Santhosh nagar, Hyderabad, Contact No.040-24532099

 Dr. N.N. REDDY, Principal Scientist, CRIDA, Santhosh Nagar, Hyderabad, Contact No.040-24530163

 Dr. R.KALAIVANI, Head of Department of Biotechnology, Than Thai Hans Roever College, Perambalur, Tamil Nadu, Contact No.09443640474.


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ISSN : 2251-1563