Browsing by Author "Singh, O.N."
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Research HighlightItem Open Access CRRI Rice Varieties for Diverse Ecologies(NRRI, Cuttack) Dash, S.K.; Pradhan, S.K.; Kar, M.K.; Patnaik, S.S.C.; Behera, L.; Meher, J.; Anandan, A.; Marandi, B.C.; Lenka, S.; Chattopadhyay, K.; Singh, O.N.; Mohapatra, T.; Director, NRRI, CuttackResearch HighlightItem Open Access High Yielding and Water Saving NRRI Aerobic Rice Varieties(The Director, ICAR-NRRI, Cuttack, 2016) Anandan, A.; Pradhan, S.K.; Mohapatra, S.D.; Saha, S.; Panneerselvam, P.; Singh, O.N.Research HighlightItem Open Access Impact of Climate Resilient Varieties on Rice Productivity and Ensuring Food Security in Coastal Area of Eastern India(NRRI, Cuttack) Chattopadhyay, Krishnendu; Gayen, Sukanta; Mondal, Ismail; Mishra, Sumanta Kumar; Mukherjee, Arup Kumar; Marandi, B.C.; Singh, O.N.; Sarkar, Ramani Kumar; Director, NRRI, CuttackRearch HighlightItem Open Access Production Technology for Hybrid Rice- CR Dhan-702 (CRHR-102)(Director, NRRI, Cuttack, 2022-06) Verma, Ramlakhan; Jena, Debarchana; Rout, Diptibala; Hembram, Baidyanath; Katara, J.L.; Sarakar, Sutapa; Samantaray, S; Patra, B.C.; Mohapatra, S.D.; Nayak, A.K.; Mukherjee, A.K.; Singh, O.N.Rearch HighlightItem Open Access Production Technology for Hybrid Rice- CR Dhan-703 (CRHR-103)(Director, NRRI, Cuttack, 2022-06) Verma, Ramlakhan; Jena, Debarchana; Rout, Diptibala; Hembram, Baidyanath; Katara, J.L.; Sarakar, Sutapa; Samantaray, S; Patra, B.C.; Mohapatra, S.D.; Mukherjee, A.K.; Nayak, A.K.; Singh, O.N.Research HighlightItem Open Access SATYABHAMA(NRRI, Cuttack) Pradhan, S.K.; Barik, S.R.; Meher, J.; Anandan, A; Sadangi, B.N.; Singh, O.N.; Mohapatra, T.; Director, NRRI, CuttackThesisItem Open Access STUDY OF COMBINING ABILITY AND HETEROSIS FOR DEVELOPMENT OF AROMATIC HYBRIDS IN RICE (Oryza sativa L.)(Indira Gandhi Krishi Vishwavidyalaya, Raipur, 2016) Behera, Monalisa; Sharma, Deepak; Singh, O.N.; Sharma, Bhawana; Verulkar, S.B.; Saxena, Ravi R.; Saxena, Ravi R.In view to invigorate hybrid rice breeding and exploration of heterosis in untapped, low productive genetic pool of non-basmati aromatic rice, this study entitled ‘Study of combining ability and heterosis for development of aromatic hybrids in rice (Oryza sativa l.)’ was conducted at Research cum Instructional Farm of Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh during Rabi 2014-2015 and at research farm and laboratory at NRRI, Cuttack during Kharif 2015. The study was based to assess the general combining ability of parents, specific combining ability of hybrids, genetic diversity based heterosis prediction of hybrids, identification of maintainers and restorers and their efficacy in fertility restoration. The genetic materials used in the research work comprises of three CMS lines viz., IR-58025A, CRMS 31A and CRMS 32A and ten rice breeding line/ landraces viz., IET-21842 (R 1536-136-1-77-1), Tulsimongra, Bisni, Gopalbhog, Badshahbhog, Govindphool, Tenduphool, Kumbhdev, Bhatamasuri and Chhinguchi as testers. Altogether 30 crosses were made in LxT mating fashion and evaluated along with one standard hybrid check US 314 (mid early duration) in Randomized Completely Block Design (RCBD) design with 3 replication. Observations were recorded for 30 yield components and quality related traits from five randomly selected plants. Molecular analysis for genetic diversity, heterotic prediction was done by utilizing 96 SSR markers; and maintainer and restorer identification was done by utilizing functional markers RM6100 (Rf4) and DRRF3-10 (Rf3). Results of the study revealed that the variance due to parents and hybrids was highly significant for all the characters taken under study. This suggested that sufficient variability is present in materials used for present study. This is found that magnitude of SCA variance was higher than the GCA variance for most of the characters, indicating predominance of non-additive gene action which is prerequisite in heterotic expression in hybrid. Among lines, CRMS31A along with IR 58025A exhibited positive GCA effect with many desirable traits and having vast genetic distance with lines, identified as good general combiner. Among the testers, IET 21842, Tulsimongra, Bisni, Tenduphool and Chhinguchhi were found to be good combiner for grain yield per plant and other related traits. In addition, Bisni and IET 21842 were identified as good general combiner for most of the quality traits. Hybrid CRMS31A X IET-21842 showed highest SCA value followed by IR58025A X Tulsimongra, CRMS32A X Tulsimongra, CRMS32A X Kumbhdev and CRMS32A X Badshabhog for grain yield per plant. CRMS32A X Gopalbhog was identified as promising hybrid for quality traits viz., hulling%, milling % and head rice recovery, which is remains major concern of hybrid. Based on SCA effect, CRMS32A X Tulsimongra, CRMS31A X BISNI, IR58025A X Tulsimongra and CRMS31A X IET-21842 were identified as promising hybrids for pollen fertility %, spikelet fertility %, fertile spikelets per plant and 1000-seed weight. Among hybrids, based on mean performance, CRMS 32A X Tenduphool and CRMS 31A X Tenduphool were identified higher yielder, but no one found with promising extant of heterotic in grain yield per se. Maximum genetic diversity among parents taken in the study were reported between all lines and testers Chhinguchhi, Kumbhdev and Bhatamahsuri which also shown constant and maximum heterosis expression for grain yield per plant. Thus, it validated that genetic diversity among parents is major determinant of heterotic expression in hybrids. Based on molecular screening, parents which are identified as maintainers and restorer could not meet the expected level of maintainer and restorer ability, suggested involvement of other genetic block (s)/ non allelic interaction which may further be studied in deep. Total of five microsatellite markers (SSR markers) were used for fingerprinting of hybrids, assessing variation within parental lines and testing the genetic purity of hybrid rice. The two polymorphic markers i.e., RM13781 and RM 15981 were clearly distinguished most of the parental lines used in the study.