Vol. 7 (4) : July-August 2016 issue
Green Farming Vol. 7 (4) : 783-786 ; July-August, 2016
SSR marker aided parental polymorphism survey for stigma exsertion in maintainer lines of hybrid rice
K. SRUTHI1*, K.B. ESWARI2, K.B. KEMPARAJU3, K. JAYARAMULU4 and M. SHESHU MADHAV5
Department of Genetics and Plant Breeding, College of Agriculture, Prof. Jaya Shankar Telangana State Agricultural University, Rajendranagar, Hyderabad - 500 030 (Telangana)
Designation : 1P.G. Student (Agric.) *(kanneboinasruthi30@gmail.com), 2Associate Professor, 3Scientist, 4Ph.D. Scholar, 5Senior Scientist
Subject : Crop Genetics and Plant Breeding
Paper No. : P-3429
Total Pages : 4
Received : 07 March 2015
Revised accepted : 26 May 2016
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Citation :
K. SRUTHI, K.B. ESWARI, K.B. KEMPARAJU, K. JAYARAMULU and M. SHESHU MADHAV. 2016. SSR marker aided parental polymorphism survey for stigma exsertion in maintainer lines of hybrid rice. Green Farming Vol. 7 (4) : 783-786 ; July-August, 2016
ABSTRACT
To begin marker assisted selection or marker assisted back cross breeding for introgression of a desirable trait into a variety from the donor genotype, study of parental polymorphism is a pre-requisite. Unless the parents are polymorphic for the traits of interest, the further selection of plants carrying the traits of interest is not possible in the progenies. The experiment was conducted in Directorate of Rice Research, Hyderabad. In the present study Rice microsatellite (RM) markers were used to study the parental polymorphism between the selected two parents APMS-6B a popularly used maintainer line with low stigma exsertion (14.95%) and BF-16B, another maintainer line with high stigma exsertion (80.25%). The two parents were screened for parental polymorphism using 454 SSR markers, of which 118 markers exhibited polymorphism. The overall polymorphism level for the surveyed SSR markers was 25.99 % across the 12 chromosomes. Construction of a Linkage Map could be ensued procuring the generated genotyping data which could further avail QTL analysis and identification of markers linked to stigma exsertion trait.
Key words :
Hybrid rice, Parental polymorphism, Simple sequence repeats (SSR), Stigma exsertion.