International Journal of Plant Sciences

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Genetic Divergence in Upland Rice (Oryza sativa L.)


Affiliations
1 Division of Agricultural Botany, College of Agriculture, Kolhapur (M.S.), India
2 Department of Agricultural Botany, College of Agriculture, Kolhapur (M.S.), India
3 Department of Soil Science and Agricultural Chemistry, College of Agriculture, Kolhapur (M.S.), India
     

   Subscribe/Renew Journal


Genetic diversity was assessed in 40 genotypes of rice for 12 quantitative characters including grain yield using Mahalanobis D2 statistics. The D2 values between all possible pairs of 40 genotypes ranged from 26.32 to 404.814. The results revealed that 40 genotypes were grouped into 8 clusters with substantial divergence between them. Cluster I was very large comprising 24 genotypes followed by cluster II with 10 genotypes, while clusters III to VIII were solitary clusters. The maximum inter-cluster distance was obtained between cluster VI and VII (D = 20.12) followed by those between cluster VII and VIII (D = 18.56) which may serve as potential parents for hybridization, whereas, minimum between cluster III and IV (D = 5.13). The highest intra cluster distance was recorded for cluster II (D = 7.96) and lowest for cluster I (D = 6.62). The genotypes in the cluster VI had lowest mean value (89.67) for days to 50 per cent flowering indicating their use in breeding program for development of early maturing varieties. Cluster VIII recorded high grain yield per plant showing its potential for yield improvement. The characters number of spikelets per panicle and days to 50 per cent flowering contributed maximum in the manifestation of genetic divergence. RDN-20, RDN-11, Phule Radha, RDN-18 and RDN-5 may serve as potential donors for future hybridization programmes.

Keywords

Oryza sativa, Genetic Diversity, Cluster Analysis, D2 Analysis.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Banumathy, S., Manimaran, R., Sheeba, A., Manivannan, N., Ramya, B., Kumar, D. and Ramasubramanian, G.V. (2010). Genetic diversity analysis of rice germplasm lines for yield attributing traits. Electron J. Plant Breed., 1 (4): 500-504.

  • Bhaskar, S., Tag, Hui and Das, A. K. (2007). Ethnobotany of foods and beverages among the rural farmers of Tai Ahom of North Lakhimpur district, Asom. Indian J. Trad. Knowledge, 6 (1): 126-132.

  • Chanbeni, Y. O., Lal, G. M. and Rai, P. K. (2012). Studies on genetic diversity in rice (Oryza sativa L.). J. Agric. Tech., 8 (3): 1059-1065.

  • Chauhan, J.S. and Chauhan, V.S. (1994). Genetic divergence in rainfed upland rice. Oryza, 33: 26-30.

  • Dushyantha, K.B.M. and Anand, K. (2010). Genetic divergence in rice accessions of hill zone of Karnataka. Electron J. Plant Breed., 1 (5): 1329-1331.

  • Greenland, D.J. (1997). The sustainability of rice farming. CAB Int. Wallingford, UK, 273 pp.

  • Karthikeyan, P. and Anubuselvam, Y. (2008). Genetic diversity among rice genotypes under coastal salinity situation. Adv. Plant Sci., 21 (1): 87-90.

  • Mahalanobis, P.C. (1936). On the generalized distance in statistics. Proc. Nat. Ins. Sci., India, 2 (1): 49-55.

  • Mundhe, B.S., Jambhate, N.D. and Bendale, V. W. (2006). Genetic divegence in mid-late genotypes of rice. J. Maharashtra Agric. Univ., 31 (1): 21-23.

  • Murthy, B.R. and Arunachalam, V. (1966). The nature of divergence in relation to breeding system in some crop plants. Indian J. Genet., 26(1): 188-198.

  • Rajesh, T., Paramasivam, K. and Thirumeni, S. (2010). Genetic divergence in land races of rice. Electron. J. Plant Breed., 1(2): 199-204.

  • Rao, C.R. (1952). Advanced statistical methods in biometrical research. Ed., John Wiley and Sons Inc., NEW YORK, U.S.A.

  • Roy, B., Basu, A.K. and Mandal, A.B. (2002). Genetic diversity in the rice (Oryza sativa L.) genotypes under humid tropics of Andaman based on grain yield and seed characters. Indian J. Agric. Sci., 72 (2): 84 -87.

  • Sharma, S. R. (2000). Genetic divergence in soybean. J. Oilseed Res., 17 (1): 17-19.

  • Singh P.K., Mishra, M.N., Hore, D.K. and Verma, M.R. (2006). Genetic divergence in lowland rice of north eastern region of India. Comm. Biometry Crop Sci., 1(1): 35-40.

  • Vennila, S., Anbuselvam, Y. and Palaniraja, K. (2011). D2 analysis of rice germplasm for some quantitative and quality traits. Electron. J. Plant Breed., 2 (3): 392-403.


Abstract Views: 369

PDF Views: 2




  • Genetic Divergence in Upland Rice (Oryza sativa L.)

Abstract Views: 369  |  PDF Views: 2

Authors

Kamlesh Kumar
Division of Agricultural Botany, College of Agriculture, Kolhapur (M.S.), India
S. R. Shinde
Department of Agricultural Botany, College of Agriculture, Kolhapur (M.S.), India
S. M. Jagtap
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Kolhapur (M.S.), India

Abstract


Genetic diversity was assessed in 40 genotypes of rice for 12 quantitative characters including grain yield using Mahalanobis D2 statistics. The D2 values between all possible pairs of 40 genotypes ranged from 26.32 to 404.814. The results revealed that 40 genotypes were grouped into 8 clusters with substantial divergence between them. Cluster I was very large comprising 24 genotypes followed by cluster II with 10 genotypes, while clusters III to VIII were solitary clusters. The maximum inter-cluster distance was obtained between cluster VI and VII (D = 20.12) followed by those between cluster VII and VIII (D = 18.56) which may serve as potential parents for hybridization, whereas, minimum between cluster III and IV (D = 5.13). The highest intra cluster distance was recorded for cluster II (D = 7.96) and lowest for cluster I (D = 6.62). The genotypes in the cluster VI had lowest mean value (89.67) for days to 50 per cent flowering indicating their use in breeding program for development of early maturing varieties. Cluster VIII recorded high grain yield per plant showing its potential for yield improvement. The characters number of spikelets per panicle and days to 50 per cent flowering contributed maximum in the manifestation of genetic divergence. RDN-20, RDN-11, Phule Radha, RDN-18 and RDN-5 may serve as potential donors for future hybridization programmes.

Keywords


Oryza sativa, Genetic Diversity, Cluster Analysis, D2 Analysis.

References