Advertisement

Cereal Research Communications

, Volume 37, Issue 2, pp 261–268 | Cite as

Relationship between root and yield morphological characters in rainfed low land rice (Oryza sativa L.)

  • A. KanbarEmail author
  • M. Toorchi
  • H. E. Shashidhar
Breeding

Abstract

Understanding the relationship between root system and yield related traits is an important objective in crop breeding programs. Canonical correlation analysis has been adopted to study the strength of association between the root morphological traits and grain yield components under low-moisture stress and well-watered conditions and to find the root morphological characters that have the largest influence on grain yield and its components under the two conditions. This study revealed that root to shoot length and weight ratios and root dry weight were had the largest effect on plant height, shoot dry weight and grain yield under well-watered condition. Under low moisture stress, maximum root length and root number were also important for improving grain yield and panicle length. The interrelationships clearly identified the importance of root to shoot length and weight ratios and root dry weight under well-watered condition. While, maximum root length and root number are a better combination under low moisture stress condition.

Keywords

canonical correlation drought rice (Oryza sativa L.) root-yield traits 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Anonymous, 2004. Annual report for 2003. IRRI, Los Banos, Philippines, pp. 81–87.Google Scholar
  2. Barraclough, P.B., Leigh, R.A., 1984. The growth activity of winter wheat roots in the field: The effect of sowing date and soil type on root growth of high-yielding crops. J. Agric. Sci. 103:59–74.CrossRefGoogle Scholar
  3. Blum, A. 1999. Towards standard assays of drought resistance in crop plants. In: Molecular approaches for the genetic improvement of cereals for stable production in water-limited environments. International workshop, June 1999, Cimmyt, Mexico, pp. 29–35.Google Scholar
  4. Ekanayake, I.J., O’Toole, J.C., Garrity, D.P., Masajo, T.N. 1985. Inheritance of root characters and their relations to drought resistance in rice. Crop Sci. 25:927–933.CrossRefGoogle Scholar
  5. Fukai, S., Cooper, M. 1995. Development of drought resistant cultivars using physio-morphological traits in rice. Field Crops Res. 40:67–87.CrossRefGoogle Scholar
  6. Gittins, R. 1985. Canonical Analysis, A Review with Applications in Ecology. Springer-Verlag, Berlin, pp. 56–85.Google Scholar
  7. Gomathinayagam, P., Ingram, K.T., Maguling, M.A. 1992. Screening upland rice cultivars for early drought. Madras Agric. J. 79:658–662.Google Scholar
  8. Ingram, K.T., Bueno, F.O., Namuco, O.S., Yambao, E.B., Beyrouty, C.A. 1994. Rice root traits for drought resistance and their genetic variation. In: Kirk, G.J.O. (ed.), Rice Roots: Nutrient and Water use. IRRI, Los Banos, Manila, Philippines, pp. 67–77.Google Scholar
  9. Johnson, R.A., Wichern, D.W. 1998. Applied Multivariate Statistical Methods (4 th edition). London-Prentice Hall, Englewood Cliffs, pp. 65–85.Google Scholar
  10. Kanbar, A., Shashidhar, H.E. 2004. Correlation and path analysis for root morphological taits in indica × indica population of rice (Oryza sativa L.). Crop Res. 27:94–98.Google Scholar
  11. Mian, M.A.R., Nafziger, E.D., Kola, F.L., Teyker, R.H. 1994. Root size and distribution of field grown wheat genotypes. Crop Sci. 34:810–812.CrossRefGoogle Scholar
  12. Mumbani, B., Lal, R. 1983. Response of upland rice varieties to drought stress. II. Screening rice varieties by means of variable moisture regimes along a toposequence. Plant and Soil 73:73–94.CrossRefGoogle Scholar
  13. O’Toole, J.C. 1982. Adaptation of rice to drought prone environments. In: Drought Resistance in Crops with Emphasis on Rice. IRRI, Los Bonos, Philippines, pp. 195–213.Google Scholar
  14. O’Toole, J.C., De Datta, S.K. 1986. Drought resistance in rainfed lowland rice. In: Progress in Rainfed Lowland Rice Research. IRRI, Los Bonos, Philippines, pp. 145–158.Google Scholar
  15. O’Toole, J.C., Bland, W.L. 1987. Genotypic variation in crop plant root system. Adv. Agron. 41:91–145.CrossRefGoogle Scholar
  16. Robertson, B.M., Hall, H.E., Foster, K.W. 1985. A field technique for screening for genotypic differences in root growth. Crop Sci. 25:1084–1090.CrossRefGoogle Scholar
  17. SAS Institute, Inc. 1996. SAS Language Guide for Personal Computers. Edition 6.12, Cary, NC, USA.Google Scholar
  18. Sharma, S. 1996. Applied Multivariate Techniques. John Wiley & Sons, New York, pp. 245–256.Google Scholar
  19. Thanh, N.O., Zheng, H.G., Dong, N.V., Trinh, L.N., Ali, M.L., Nguyen, H.T. 1999. Genetic variation in root morphology and microsatellite dna loci in upland rice (Oryza sativa L.) from Vietnam. Euphytica 105:43–51.CrossRefGoogle Scholar
  20. Toorchi, M., Shashidhar, H.E., Ghreesha, T.M., Hittalmani, S. 2003. Performance of backcrosses involving transgressant doubled haploid lines in rice under contrasting moisture regimes: yield components and markers hetrozygoizity. Crop Sci. 43:1448–1456.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest 2009

Authors and Affiliations

  1. 1.Department of Field Crops, Faculty of AgricultureUniversity of DamascusDamascusSyria
  2. 2.Department of Crop Production and Breeding, Faculty of AgricultureUniversity of TabrizTabrizIran
  3. 3.Department of Genetics and Plant BreedingUniversity of Agricultural SciencesBangaloreIndia

Personalised recommendations