Heterosis Studies in Indian Mustard [Brassica Juncea]

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1 Manuscript Processing Details (dd/mm/yyyy) : Received: 22/04/2017 Accepted on : 28/04/2017 Published : 15/05/2017 Heterosis Studies in Indian Mustard [Brassica Juncea] Heera Lal Barupal 1, A. K. Sharma 2, Harshvardhan Singh Shekhawat 3, Pawan Kumar 4* and Manoj Kumar 5 1 M.Sc.Research Scholar, 2 Professor, Department of Plant Breeding and Genetics, College of Agriculture, SKRAU, Bikaner, Rajasthan 3,5 Ph.D Research Scholar, College of Agriculture, SKRAU, Bikaner, Rajasthan 4 Ph.D Research Scholar, Rajasthan Agricultural Research Institute, Durgapura, SKNAU, Jobner *Correspondence Id: pawanchoudhary2@gmail.com Abstract Heterosis breeding approach is one of the most successful technological options being employed for the improvement of brassica variety for quality and quantity of seed yield and other yield related parameter. The present investigation was undertaken to study the heterosis in Indian mustard. Ten lines and five testers and their 50 F 1s were grown in randomized block design with three replications. Data on quantitative characters were recorded and Heterobeltosis and heterosis were determined. The crosses GM-3 x RGN-145, RGN-48 x Kranti and Gm-3 x Kranti took lesser days to flowering, as they had highest negative and significant heterosis and heterobeltiosis Five hybrids expressed negative and significant heterosis and heterobeltiosis, in which RGN-48 x RGN-145 and RGN-48 x Geeta were earliest in maturity. The most heterotic cross was RGN-48 x Kranti for days to 50% flowering, days to maturity, plant height, number of primary branches per plant and biological yield. Keywords Heterosis, Indian Mustard, Yield, Better Parents I. INTRODUCTION Indian mustard [Brassica juncea (L.) Czern & Coss] is an important oil seed crop of the world. It plays a major role in catering to edible oil demand of the country. The genus Brassica, belongs to cruciferae or brassicaceae family. Indian mustard is a natural amphidiploid (2n=36) of Brassica campestris (2n=20) and Brassica nigra (2n=16) (Nagaheru, 1935). It was introduced in India from China and from where it spread to Afghanistan and other countries. It is largely a self-pollinated crop (85-90 %). However, owing to insects, especially the honeybees, the extent of cross-pollination varies from 4.0 to 16.6 %. It covers an area of 6.70 million hectares with 8.00 million tonnes production and 1194 kg/ha productivity in India[1]. Rajasthan is the largest producer of rapeseed-mustard followed by Uttar Pradesh, Haryana, Madhya Pradesh, West Bengal, Gujarat and Assam. In Rajasthan mustard is cultivated on about 2.78 million hectares with 3.62 MT production and 1301 Kg/ha. Productivity [2]. Heterosis breeding could be a potential alternative for achieving quantum jumps in production and productivity. Since, commercial exploitation of heterosis in several crop plants has caused a major breakthrough in yield levels. The magnitude of heterosis particularly for yield is of paramount importance and if the heterosis is partially and economically feasible it can help to reach high yield levels and there by higher output of oil in mustard. II. MATERIALS AND METHODS The present investigation was undertaken to study the combining ability and heterosis in Indian mustard. Ten lines (Bio-902, GM-3, Rohini, RGN-13, RGN-48, RGN- 73, RGN-229, RGN-236, RGN-298 and RGN-303) and five testers (RL-1359 Geeta Kranti RB-50 and RGN-145) along with their 50 F1s were grown in randomized block design with three replications during rabi at Research Farm, College of Agriculture, Bikaner. Each genotype was sown in single row plot of 3 m row length. Row to row and plant-to-plant distances were maintained at 45 cm and 20 cm, respectively in each replication. The observations were recorded on randomly selected five competitive plants for each genotype in each replication for eleven character vz Plant height (cm), Number of primary branches, Number of secondary branches, Number of siliquae, Number of seeds per siliqua, Test weight (g), Biological yield per plant, Harvest index and Seed yield (g) except days to 50% flowering and days to maturity which were recorded on whole plot basis. Heterosis expressed as per cent increase or decrease in hybrid (F 1 ) over better parent (BP) and mid-parent (Heterosis) value in desired direction was calculated using the following formula [3]. Average heterosis = F1-MP MP Where, F 1 is the mean over replications of a hybrid between i th and j th parents. MP is the mean over the replications of the mid-parents. Percentage heterobeltiosis of a cross was calculated by the following formula, Heterobeltiosis (%) = F1-BP BP Where, F 1 is the mean over replications of a hybrid i th and j th parents BP is the mean over replications of the better parent among i th and j th parents of a cross. III. RESULT AND DISCUSSION The mean performance (Table 1) and magnitude of heterosis (Table 2) over better parent for earliness and other yield parameter are depicted. The crosses with negative significant heterosis for days to 50% flowering and days to maturity were considered as desirable for these traits. Out of 50 F 1 crosses, 12 F 1 depicted negative and significant heterosis over mid-parent and better parent value. The crosses GM-3 x RGN-145, RGN-48 x Kranti 960

2 and Gm-3 x Kranti took lesser days to flowering, as they had highest negative and significant heterosis and heterobeltiosis. These findings are in line with [4] and [5]. Five hybrids expressed negative and significant heterosis and heterobeltiosis, in which RGN-48 x RGN-145 and RGN-48 x Geeta were earliest in maturity. The results are in conformity with [6]. In respect of plant height, three hybrids exhibited positive and significant heterosis, the cross RGN-48 x Kranti was tallest as it had highest positive and significant heterosis and heterobeltiosis. These results were also founded by [4] and Choudhary and Sharma [7]. Ten hybrids showed significant and positive heterosis and heterobeltiosis for number of primary branches. The hybrids RGN-73 x RB-50, RGN-73 x RGN-145 and RGN-48 x RGN-145 manifested maximum significant positive heterosis (63.87, and 57.35) and heterobeltiosis (61.34, and 40.80) respectively. These findings agreed with the results of [8] and [9].The highest heterosis (29.05) and heterobeltiosis (29.67) was registered in cross combination RGN-303 x RL-1359 for number of secondary branches. Positive and significant heterosis was showed by six cross combinations. Similar inclinations were observed by [10].Three F 1 crosses namely RGN-229 x Kranti, RGN- 229 x RL-1359 and GM-3 x RL-1359 depicted postive and significant heterosis over mid-parent and better parent value for number of silliquae. This is compliance with earlier findings of [11] and [12]. Out of 50 F 1 eleven cross combination were registered for positive and significant heterosis and heterobeltiosis for test weight in which crosses RGN-303 x RL-1359 (52.31), Rohini x RB- 50 (48.03) and RGN-303 x Kranti (40.82) depicted highest heterosis and heterobeltiosis. The 21 crosses showed positive and significant heterosis over mid-parent and better parent for biological yield. The finding are in accordance with that of [10] and [13].Maximum heterosis and heterobeltiosis for harvest index was showed by Bio-902 x RB-50. One cross showed positive and significant heterosis over better parent and two crosses were positive and significant for seed yield. These were supported by [11] and [14]. IV. CONCLUSION The superior crosses identified on overall basis of per se performance, specific combining ability and heterosis were RGN-303 x RGN-145 for plant height, RGN-73 x Geeta for number of primary branches ; RGN-303 x RL-1359 for number of secondary branches ; RGN-229 x RL-1359 and RGN-229 x Kranti for number of siliquae ; RGN-298 x RGN-145 and RGN-303 x RB-50 for number of seeds per siliqua; RGN-303 x Kranti for test weight; Bio-902 x RB-50 for harvest index and RGN-298 x Kranti for seed yield. Agricultural Research Station Beechwal, College of Agriculture, SKRAU, Bikaner for conducting this research study. The author is grateful to major advisor Dr. A.K. Sharma, Professor, Department of plant breeding and genetics for his engrossing guidance, incessant encouragement, constructive suggestions propitious assistance, keen and sustained interest, kind and gracious patronage during the entire course of investigation and preparation of this manuscript. REFERENCE [1] Anonymous, (2015a). Reserve bank of India. Handbook of Statistics on Indian Economy [2] Anonymous, (2015b). Department of Agriculture (Raj.) Statistics rabi: [3] 3.S. Fonseca and F. Patterson. Hybrid vigour in a seven parent diallel crosses in common winter wheat (Triticum aestivum) Crop. Sci., 8: 1968, [4] T. P. Yadav, H. Singh,. V.P. Gupta and R.K. Rana. Heterosis and combining ability in raya [Brassica juncea (L.) Czern and Coss.] for yield and its components. Indian J. Genet., 34A : 1974, [5] K. M Patel, S. B Prajapati, U. G. Fatteh and I. D. Patel. Combining ability and heterosis in Indian mustard. J. Oilseeds Res., 9(1): 1993, [6] M. Z. Ahsan, F. A. Khan, S. A. Kang and K. Rasheed Combining ability and heterosis analysis for seed yield and yield components in Brassica napus. J. Bio., Agri. and Healthcare, vol,.3 (9) (2013);pp [7] S. K. Chaudhary and S. K. Sharma. Inheritance of some quantitative characters in a cross of Indian mustard. Indian J. Agric. Sci., 52 (1): (1982), [8] R. Prasad and B. Singh. Heterosis for some quantitative characters in Indian rapeseed. Indian J. Agric. Sci., 55 (11): 1985., [9] B. A. Monpara and K. L. Dobariya. Heterosis and combining ability in Indian mustard. J. Oilseeds Res., 24 (2): 2007, [10] R. K. Katiyar R. Chamola and V. L. Chopra. Heterosis and combining ability in Indian mustard (B. junca). Indian J. Genet., 60 (4):2000, [11] I. J. Anand and D. S. Rawat Genetic diversity, combining ability and heterosis in brown mustard. Indian J. Genet., 44 (1): (1984), [12] H. L. Thakur and S. Bhateria. Heterosis and inbreeding depression in Indian mustard. Indian J. Genet., 53 (1): 1993, [13] S. Shrivastava, M. Jawaid and R. Kumar Heterosis in Indian mustard. National Seminar on Genetics of Brassicas. Abstracts, 1990, pp. 27. [14] A. Kumar, R. Tiwari and K. Kumar Exploitation of heterosis using Cytoplasmic Male Sterility System in Indian mustard (B. juncea).the Ecoscan., 6: 2014, V. ACKNOWLEDGEMENT This research was a part of M. Sc. thesis and the author greatly appreciate research facilities and support from the 961

3 Genotypes Crosses Table 1: Mean performance of crosses in mustard for Heterobeltiosis and Heterosis Days to Days to Plant Test Biological 50 % maturity height siliquae weight yield per flowering (cm) (g) plant (g) primary branches secondary branches Seeds per siliqua Harvest index (%) Seed yield (g) RGN-13 x RGN RGN-13 x Kranti RGN-13 x RL RGN-13 x Geeta RGN-13 x RB RGN-73 x RGN RGN-73 x Kranti RGN-73 x RL RGN-73 x Geeta RGN-73 x RB RGN-48 x RGN RGN-48 x Kranti RGN-48 x RL RGN-48 x Geeta RGN-48 xrb RGN-229 x RGN RGN-229 x Kranti RGN-229 x RL RGN-229 x Geeta RGN-229 x RB RGN-298 x RGN RGN-298 x Kranti RGN-298 x RL RGN-298 x Geeta RGN-298 x RB RGN-303 x RGN RGN-303 x Kranti RGN-303 x RL RGN-303 x Geeta RGN-303 x RB Bio-902 x RGN Bio-902 x Kranti Bio-902 x RL Bio-902 x Geeta Bio-902 x RB RGN-236 x RGN RGN-236 x Kranti RGN-236 x RL RGN-236 x Geeta RGN-236 x RB Rohini x RGN Rohini x Kranti Rohini x RL Rohini x Geeta Rohini x RB GM-3 x RGN GM-3 x Kranti GM-3 x RL GM-3 x Geeta GM-3 x RB

4 Table 2: Heterobeltiosis and Heterosis for earliness and other yield parameter Crosses Day to 50 % flowering Days to maturity Plant height (cm) primary branch 963 secondary branch silliqua per plant BP Heterosis BP Heterosis BP Heterosis BP Heterosis BP Heterosis BP Heterosis RGN-13 x RGN * 12.37** ** -9.64** ** ** ** ** ** RGN-13 x Kranti -8.33* ** ** ** ** RGN-13 x RL ** 19.71** 3.52** 3.65** ** ** ** ** ** ** RGN-13 x Geeta * -6.75* ** ** ** ** RGN-13 x RB * ** -7.22** ** ** ** ** RGN-73 x RGN * ** 54.17** ** ** ** ** RGN-73 x Kranti ** ** 3.40** 5.97** ** ** ** ** * RGN-73 x RL ** 10.27** ** ** ** ** ** ** ** RGN-73 x Geeta ** 8.65** ** ** 33.07** 53.71** ** ** ** ** RGN-73 x RB ** ** 6.02** 6.95** ** ** 61.34** 63.87** ** ** ** ** RGN-48 x RGN ** ** -7.49** ** 57.85** ** ** ** ** RGN-48 x Kranti ** ** -9.73** -6.56** 12.95** 18.18** 22.88* 27.83** ** ** ** ** RGN-48 x RL ** ** -5.36** -8.82** -6.71* ** ** ** ** RGN-48 x Geeta * ** ** -5.98** ** ** * RGN-48 x RB * ** -4.88** ** 51.35** ** ** ** ** RGN-229x RGN * 13.36** -4.61** -2.60* ** -9.54** 27.89* 43.62** ** * RGN-229 x Kranti ** ** ** 42.34** 67.07** RGN-229 x RL ** 3.03** * 54.14** RGN-229 x Geeta * 2.66* ** ** ** ** RGN-229 x RB ** 3.51** 4.03** -6.80* ** ** ** RGN-298x RGN * 14.91** ** ** ** RGN-298 x Kranti -8.93* * 4.95** ** * ** ** ** ** RGN-298 x RL * 10.83** 10.97** -8.41** ** ** ** ** RGN-298 x Geeta ** 5.81** 6.08** * ** ** ** * RGN-298 x RB ** 6.77** 7.17** ** * ** ** RGN-303 xrgn ** 22.26** 3.40** 5.32** ** ** ** RGN-303 x Kranti ** -4.13** -2.35* ** ** 16.43* ** 19.81** RGN-303 x RL ** 25.78** ** -5.45* ** ** 29.05** 72.67** RGN-303 x Geeta ** 4.03** 4.42** ** ** ** * RGN-303 x RB ** 3.76** 4.02** ** ** ** ** ** ** Bio-902 x RGN * 18.66** ** 30.89* 45.70** Bio-902 x Kranti -8.93* * ** ** 23.25* 29.21** ** ** ** Bio-902 x RL ** 22.78** 4.98** 5.63** ** ** ** ** Bio-902 x Geeta ** 5.72** 6.78** ** -8.87** ** ** Bio-902 x RB ** 10.70** 11.11** ** ** ** ** ** ** RGN-236x RGN ** 8.74** -9.63** -6.67* 26.71* 48.41** ** * RGN-236 x Kranti -8.93* ** 9.46** ** -9.73** ** ** RGN-236 x RL ** -8.01* 8.51** 11.95** ** ** ** * * RGN-236 x Geeta ** 11.87** ** ** ** ** ** ** RGN-236 x RB ** 10.71** ** ** ** ** ** ** Rohini x RGN ** ** ** -9.68** * Rohini x Kranti ** ** ** * ** * Rohini x RL ** ** ** ** ** ** Rohini x Geeta ** ** ** ** ** ** ** ** Rohini x RB ** ** 2.33* 6.15** ** ** ** ** ** ** ** GM-3 x RGN ** ** 6.80** 7.45** ** -8.81** ** ** GM-3 x Kranti ** ** 2.67* 3.30** ** * ** * GM-3 x RL ** ** 5.72** -8.18** -7.15** ** 31.70** 64.77** GM-3 x Geeta ** 7.12** -6.49* ** ** GM-3 x RB ** 5.48** ** ** ** ** 30.43** ** * S.E. diff CD at 5% CD at 1% *and ** indicate significant at 5 and 1 percent levels, respectively, BP: Heterobeltiosis/Better parent Heterosis Conti..

5 Crosses seeds per siliqua Test weight (g) Biological yield Harvest index Seed yield (g) BP Heterosis BP Heterosis BP Heterosis BP Heterosis BP Heterosis RGN-13 x RGN ** ** ** ** ** ** RGN-13 x Kranti ** ** ** ** ** RGN-13 x RL ** ** ** ** ** ** RGN-13 x Geeta * ** ** ** ** ** RGN-13 x RB ** ** ** ** ** -8.90* -8.60* RGN-73 x RGN ** ** * 27.12** ** ** ** RGN-73 x Kranti ** ** * 68.10** 80.66** ** ** RGN-73 x RL * * 26.81** 32.08** 39.43** 49.96** ** ** -9.23* RGN-73 x Geeta ** ** ** ** * * RGN-73 x RB ** ** * 25.59** ** ** ** -7.7 RGN-48 x RGN ** 22.78** ** ** ** RGN-48 x Kranti ** 25.39** ** ** RGN-48 x RL ** ** ** 21.17* 22.45** ** ** -9.40* RGN-48 x Geeta * RGN-48 x RB ** * RGN-229x RGN * ** ** ** ** RGN-229 x Kranti ** 32.74** ** ** RGN-229 x RL ** 30.92** 43.50** ** ** * RGN-229 x Geeta ** * ** RGN-229 x RB * ** 35.29** ** ** -9.18* RGN-298x RGN ** 48.68** ** ** ** -9.26** RGN-298 x Kranti ** ** ** 82.32** ** ** RGN-298 x RL ** ** ** 39.32** 62.53** ** ** ** ** RGN-298 x Geeta ** ** ** ** -9.84* RGN-298 x RB ** 26.78** 75.63** ** ** ** ** -7.32* RGN-303 xrgn ** ** ** ** ** ** -9.82* -8.79* RGN-303 x Kranti ** ** 28.57** 40.82** 47.54** 72.01** ** ** RGN-303 x RL ** ** 48.87** 52.31** ** ** ** RGN-303 x Geeta ** * 19.56** 34.40** 68.14* ** ** RGN-303 x RB ** 40.30** ** ** ** ** Bio-902 x RGN ** * ** ** ** ** Bio-902 x Kranti ** ** ** ** ** ** ** ** Bio-902 x RL * * ** ** ** ** ** ** ** Bio-902 x Geeta ** ** ** * 16.82** ** ** ** ** Bio-902 x RB ** * ** ** ** 36.11** 43.48** ** ** RGN-236x RGN ** ** 16.37* 29.86** ** ** -8.50* 0.22 RGN-236 x Kranti ** ** RGN-236 x RL * ** ** RGN-236 x Geeta ** * * * RGN-236 x RB * Rohini x RGN ** Rohini x Kranti ** * -7.5 Rohini x RL ** 39.84** ** * ** ** Rohini x Geeta ** * 24.64** 33.85** Rohini x RB ** 48.03** ** ** ** * ** GM-3 x RGN * ** 20.00** 13.82* 30.22** ** ** ** ** GM-3 x Kranti ** 20.50** ** * GM-3 x RL * ** ** ** ** GM-3 x Geeta * * * * GM-3 x RB ** ** * * * S.E. diff CD at 5% CD at 1% *and ** indicate significant at 5 and 1 percent levels, respectively, BP: Heterobeltiosis/Better parent Heterosis 964

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