~ 183 ~ The Pharma Innovation Journal 2017; 6(9): 183-186 ISSN (E): 2277- 7695 ISSN (P): 2349-8242 NAAS Rating 2017: 5.03 TPI 2017; 6(9): 183-186 © 2017 TPI www.thepharmajournal.com Received: 12-07-2017 Accepted: 14-08-2017 Amit Tomar (Section of Oilseeds) Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, (U.P.), India. Mahak Singh (Section of Oilseeds) Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, (U.P.), India. Sanjay Kumar Singh (Section of Oilseeds) Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, (U.P.), India LP Tiwari (Section of Oilseeds) Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, (U.P.), India Correspondence Amit Kumar (Section of Oilseeds) Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, (U.P.), India. Genetic components analysis of F 1 and F 2 generations for seed yield and its component traits in yellow sarson (Brassica rapa var. yellow sarson) Amit Tomar, Mahak Singh, Sarvendra Kumar, Sanjay Kumar Singh and LP Tiwari Abstract The analysis of variance indicated significant differences among the treatments for all the characters. Parents vs. F1s, parents vs. F2s and F1s vs. F2s also revealed highly significant differences for all the characters except number of primary branches, number of secondary branches, days to maturity and oil content. Average degree of dominance 0.5 2 2 g) σ ˆ s/ σ ˆ ( was over dominance type for days to maturity, in both F1 and F2 generations. Keywords: Brassica, degree of dominance, genetic components and yellow sarson. 1. Introduction Indian mustard (Brassica juncea) is a naturally autogamous species, yet in this crop frequent out-crossing occurs which varies from 5 to 30% depending upon the environmental conditions and random variation of pollinating insects. Cytologically Indian mustard is an amphidiploid (2n=36), derived from interspecific cross of Brassica campestris (2n=20) and Brassica nigra (2n=16) followed by natural chromosome doubling. These relationships have been confirmed by the artificial synthesis of amphidiploids species by hybridizing basic diploid species and also by analysis of chloroplast and mitochondrial DNA restriction pattern of basic and amphidiploid species. The improved mustard seeds contain 39-44% oil. In India the estimated area, production and productivity of Rapeseed-mustard is 6.62 lakh ha, 8.25 million tonnes and 1245 kg/ha, respectively during in rabi 2014-15, (GOI 2015-16) [1] . Rapeseed-mustard plays a major role in the catering edible oil demand of the country. Population of India is increasing rapidly and consequently edible oil demand is also going up day- by-day, hence, it has become necessary to enhance the present production by developing superior varieties of Indian mustard. 2. Materials & Methods The materials comprised 25 lines namely, YSC-63, YSC-41, B-09, YSK-71, YSKM-11-02, YSC-76, YSKM-10-1, YSKM-11-1, YSC-75, YSKM-10-02, YSK-9-01, YSC-80, K-88, YSC- 15, Type-42, YSC-18, YSK-03, YSC-21, YSC-92, YSC-45, YSC-30, YSC-95, YSC-40, YSC- 46 and YSC-46 used as female and 4 testers namely, NRCYS-05-02, YSH-401, YST-151 and Pitambari (check) used as male of yellow sarson selected on the basis of variability for days to maturity, plant height and other agronomic characters from the Oilseeds Section, Department of Genetics and Plant Breeding, Chandra Shakher Azad University of Agriculture and Technology, Kanpur. Observation were recorded on fifteen characters viz., days to 50% flowering, days to maturity, plant height (cm), length of main raceme (cm), leaf area index (cm/m 2 ), number of primary branches per plant, number of secondary branches per plant, number of siliquae per plant, number of seeds per siliqua, biological yield per plant (g), 1000- seed weight (g), harvest index (%), protein content (%), oil content (%) and seed yield per plant (g). All the Twenty five females were crossed with each of four males in line x tester mating deigns to produce sufficient amount of F 0 seeds of 100 crosses during the Rabi season 2011-12 to raise the F 1 s. The F 1 s were selfed in order to obtain F 2 s seeds during the Rabi season 2012-13. 229 treatments (29 Parents + 100 F 1 s and 100 F 2 s) were sown at oil seed