Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810055449
Authors: VAIBHAV V. PATIL
Advisor: Dr. N. G. HANAMARATTI
Title: VALIDATION OF MOLECULAR MARKERS FOR BLAST RESISTANCE AND ASSESSMENT OF PRODUCTIVITY IN LANDRACES AND PROMISING BREEDING LINES OF RICE (Oryza sativa L.)
Publisher: University of Agricultural Sciences Dharwad
Language: en
Type: Thesis
Pages: 86
Agrotags: null
Keywords: VALIDATION OF MOLECULAR MARKERS FOR BLAST RESISTANCE AND ASSESSMENT OF PRODUCTIVITY IN LANDRACES AND PROMISING BREEDING LINES OF RICE (Oryza sativa L.)
Abstract: A field experiment was conducted at Agricultural Research Station, Mugad, University of Agricultural Sciences, Dharwad, to screen 160 rice genotypes which includes both traditional landraces and promising breeding lines for blast resistance along with validation of reported resistant genes. Under epiphytotic condition, the genotypes BA-60-6-2, MGD-V-14-7, MGD-V-14-9, BD-17-2-1 and waresanna exhibited resistance reaction and the lines like MGD-V-14-1, MGD-V-14-5, MGD-V-14-2, RF-53-102-3, Budda, Jeerigasanna, Guddenellu and Konnur Bhatta exhibited moderate resistance to blast. The genotypes, MGD-V-14-3, MGD-V-14-8, MGD-V-14-18, Kare kalvi, Adnenkelti and Madras Bhatta were found to be moderately susceptible and SMW-XV-105, MGD-1201-2, HR-12, Bilidadai Goratiga, Jaddu Bhatta, Chitiga were observed to be susceptible to blast under field condition. Validation for resistant genes using tightly linked molecular markers was carried out and the genotype MGD-V-14-7 was found to harbor four resistant genes, (Piz, Pia, Pit and Pi38). The genotypes, BA-60-6-2, SMW-11-09-30-L-1, BA-60-3-2, MGD-V-14-5, MGD-V-14-7, Huggi bhatta, Jeerige Sanna, Rasi, Budda showed the presence of the gene Piz. The broad-spectrum gene Pi54 was validated in the genotypes like MGD-V-14-5, IET-22801-2, SMW-11-09-5-1-3, Budda and Jeerige sanna. Such genotypes can be utilized in disease resistance breeding programme targeting diverse races of blast pathogen. Assessment of resistant genotypes for yield and yield attributing traits along with genetic variability parameters revealed the presence of wide genetic variability among the genotypes for productivity traits. The genotypes SMW-11-09-5-1-3, MGD-V-14-4, MGD-V-14-2, MGD-V-14-6 and MGD-V-14-7 were found to be superior for productivity with blast resistance, fine grains and early maturing compared to recently released fine grain genotype Mugad Siri-1253.
Subject: Genetics and Plant Breeding
Theme: VALIDATION OF MOLECULAR MARKERS FOR BLAST RESISTANCE AND ASSESSMENT OF PRODUCTIVITY IN LANDRACES AND PROMISING BREEDING LINES OF RICE (Oryza sativa L.)
These Type: M.Sc
Issue Date: 2015-06
Appears in Collections:Thesis

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