Current Science

Open Access Open Access  Restricted Access Subscription Access

Can Cold Tolerance Bring in Hybrids on Commercial Front in Winter Sorghum?


Affiliations
1 Indian Institute of Millets Research, Rajendranagar, Hyderabad 500 030, India
 

Studies on early-season and mid-season cold temperature stress on growth and yield components in diverse classes of winter sorghum are essential for targeting hybrid development that is otherwise confined only to rainy season-grown sorghum. The results showed that from among the 194 winter sorghum genotypes belonging to 5 groups - varieties, B-lines, R-lines, hybrids and germplasm lines, 81% of the genotypes were correctly placed in their respective groups based on discriminant analysis. Principal component analysis showed that most of the traits involved in the study are important and variability cannot be explained by a few traits and the traits recorded at seedling and maturity stages were explained by different principal components. Most of the traits recorded under cold stress at seedling stage did not correlate with those recorded under cold stress at anthesis. There is scope for improvement of individual groups for seedling dry fodder yield and grain yield, more so in the case of hybrids and female parental lines. Breeding for cold tolerance at seedling as well as anthesis stages has to be separately targeted. Thus, for developing new winter sorghum hybrids, female parental lines have to be diversified and improved for grain yield and percentage of seed set by crossing with promising germplasm lines identified in the study.

Keywords

Cold Tolerance, Germplasm, Hybrids, Winter Sorghum.
User
Notifications
Font Size

  • Maulana, F. and Tesso, T. T., Cold temperature episode at seedling and flowering stages reduces growth and yield components in sorghum. Crop Sci., 2013, 53, 564–574.

  • Prasad, P. V. V., Pisipati, S. R., Mutava, R. N. and Tuinstra, M. R., Sensitivity of grain sorghum to high temperature stress during reproductive development. Crop Sci., 2008, 48, 1911–1917.

  • Franks, C. D., Burrow, G. B. and Burke, J. J., A comparison of US and Chinese sorghum germination for early season cold tolerance. Crop Sci., 2006, 46, 1371–1376; doi:10.2135/cropsci2005.08-0279.

  • Qingshan, L. and Dahlberg, J. A., Chinese sorghum genetic resources. Econ. Bot., 2001, 55, 401–425; doi:10.1007/BF02866563

  • Ortega, J. O., Mendoza-Castillo, M. D. C. and Mendoza-Onofre, L. E., Sorghum cold tolerance, pollen production and seed yield in the central high valleys of Mexico. Maydica, 2003, 48, 125–132.

  • Ku, S. B., Edwards, G. E. and Smith, D., Photosynthesis and nonstructural carbohydrate concentration in leaf blades of Panicum virgatum as affected by night temperature. Can. J. Bot., 1978, 56, 63–68; doi:10.1139/b78-006.

  • Sanjana Reddy, P., Patil, J. V. and Phani Krishna, T., Response of diverse groups of sorghum (Sorghum bicolor (L.) Moench) genotypes to low temperature stress at anthesis. Indian J. Genet. Plant Breed., 2014, 74, 444–449.

  • Sanjana Reddy, P. and Patil, J, V., Genetic Enhancement of Rabi Sorghum: Adapting the Indian Durras, Elsevier, Academic Press, 2015, pp. 340, ISBN: 978-0-12-801926-9.

  • Mujaju, C. and Chakuya, E., Morphological variation of sorghum landrace accessions on-farm in semi-arid areas of Zimbabwe. Int. J. Bot., 2008, 4, 376–382; http://dx.doi.org/10.3923/ijb.2008.376.382.

  • Ali, M. A. et al., Morpho-physiological diversity and its implications for improving drought tolerance in grain sorghum at different growth stages. Aust. J. Crop Sci., 2011, 5, 311–320.

  • Ayana, A. and Bekele, E., Multivariate analysis of sorghum (Sorghum bicolor (L.) Moench) germplasm from ethiopia and eritrea. Gene. Resour. Crop Evol., 1999, 46, 273–284; http://dx.doi.org/10.1023/A:1008657120946.

  • Tesfamichael, A., Stephen, M. G., Remmy, K., Woldeamlak, A. and Aggrey, B. N., Genetic variation among sorghum (Sorghum bicolor L. Moench) landraces from Eritrea under post-flowering drought stress conditions. Am. J. Plant Sci., 2015, 6, 1410–1424.

  • Holcomb, J., Tolbert, D. M. and Jain, S. K., A diversity analysis of genetic resources in rice. Euphytica, 1977, 26, 441–450.

  • Pecetti, L. and Damania, A. B., Geographic variation in tetraploid wheat (Triticum turgidum ssp. turgidum convar.durum) landraces from two provinces in Ethiopia. Genet. Resour. Crop Evol., 1996, 43, 395–407.

  • Beer, S. C., Goffreda, J., Phillips, T. D., Murphy, J. P. and Sorrells, M. E., Assessment of genetic variation in Avena sterilis using morphological traits, isozymes, and RFLPs. Crop Sci., 1993, 33, 1386–1393.

  • Peeters, J. P. and Martinelli, J. A., Hierarchical cluster analysis as a tool to manage variation in germplasm collections. Theor. Appl. Genet., 1989, 78, 42–48.


Abstract Views: 395

PDF Views: 115




  • Can Cold Tolerance Bring in Hybrids on Commercial Front in Winter Sorghum?

Abstract Views: 395  |  PDF Views: 115

Authors

P. Sanjana Reddy
Indian Institute of Millets Research, Rajendranagar, Hyderabad 500 030, India
Sunil Gomashe
Indian Institute of Millets Research, Rajendranagar, Hyderabad 500 030, India

Abstract


Studies on early-season and mid-season cold temperature stress on growth and yield components in diverse classes of winter sorghum are essential for targeting hybrid development that is otherwise confined only to rainy season-grown sorghum. The results showed that from among the 194 winter sorghum genotypes belonging to 5 groups - varieties, B-lines, R-lines, hybrids and germplasm lines, 81% of the genotypes were correctly placed in their respective groups based on discriminant analysis. Principal component analysis showed that most of the traits involved in the study are important and variability cannot be explained by a few traits and the traits recorded at seedling and maturity stages were explained by different principal components. Most of the traits recorded under cold stress at seedling stage did not correlate with those recorded under cold stress at anthesis. There is scope for improvement of individual groups for seedling dry fodder yield and grain yield, more so in the case of hybrids and female parental lines. Breeding for cold tolerance at seedling as well as anthesis stages has to be separately targeted. Thus, for developing new winter sorghum hybrids, female parental lines have to be diversified and improved for grain yield and percentage of seed set by crossing with promising germplasm lines identified in the study.

Keywords


Cold Tolerance, Germplasm, Hybrids, Winter Sorghum.

References





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi02%2F307-313