Skip to main content Accessibility help
×
Home

The Balance between Leaf Area and Photosynthetic Activity in Determining Productivity of Fox-tail Millet (Setaria italica) under Rain-fed Conditions

  • V. R. Sashidhar (a1), T. G. Prasad (a1), S. J. Patil (a1), M. Udaya Kumar (a1) and K. S. Krishna Sastry (a1)...

Summary

The relationship of leaf weight ratio (LWR), leaf area ratio (LAR), stomatal frequency and dry matter (DM) production with yield and with photosynthetic efficiency, as reflected by 14CO2 fixation rate, was studied in fox-tail millet (Setaria italica) for three consecutive years. Several genotypes were identified which combined small leaf area and/or low stomatal numbers per plant with productivity under rain-fed conditions equal to that of genotypes with large stomatal numbers. 14CO2 studies in these genotypes showed that the rate of carbon fixation by the leaves was greater, at any canopy position, than in the corresponding large LA/large DM types. Genotypes with consistently small stomatal numbers per plant, associated with good dry matter accumulation and productivity, may also show small transpirational water loss under rain-fed or drought conditions. It is concluded that such genotypes are desirable for better productivity under these conditions.

Copyright

References

Hide All
Bierhuzin, J. F. (1976). Irrigation and water use efficiency. In Water and Plant life, 421431 (Eds Lange, O. L., Kappen, L. & Schulze, E. D.). New York: Springer Verlag.
Dobrenz, A. K., Wright, L. N., Humphry, A. B., Massengale, M. A. & Kneelbone, W. R. (1969). Stomatal density and its relationship to water use efficiency of blue panic grass (Panicum antidotale Rotz). Crop Science 9:354357.
Enyi, B. A. C. (1977). Physiology of grain yield in groundnut. Experimental Agriculture 13:101110.
Gaastra, P. (1959). Photosynthesis of crop plants as influenced by light, carbon dioxide, temperature, and stomatal diffusion resistance. Mededelingen Landbouwhogeschool Wageningen 59:168.
Grubben, G. J. H. (1975). La culture d'amaranthe, legume feuiles tropicals avec reference special an Sud-Dahomey. Mededelingen Landbouwhogeschool Wageningen 75:1223.
Jones, H. G. (1977). Transpiration in barley lines with differing stomatal frequencies. Journal of Experimental Botany 28:162163.
Kramer, P. J. (1983). Drought tolerance and water use efficiency. In Water Relations in Plants, 390408 (Ed. Kramer, P. J.). London: Academic Press.
Miskin, K. E., Rasmusson, D. C. & Moss, L. M. (1972). Inheritance and physiological effects of stomatal frequency in barley. Crop Science 12:780783.
Parlenge, J. Y. & Waggoner, P. E. (1970). Stomatal dimensions and resistance to diffusion. Plant Physiology 46:337–42.
Sastry, K. S.Krishna, Udaya Kumar, M. & Viswanath, N. R. (1982). Desirable plant characteristics in genotypes of finger millet (Eleusine coracana Gaertn.) for rainfed conditions. Proceedings of the Indian National Science Academy 48:264270.
Schantz, H. L. & Piemeisel, L. N. (1927). The water requirements of plants at Akron, Colorado. Journal of Agricultural Research 34:10931189.
Slatyer, R. O. (1973). The effect of internal water status on plant growth development and yield. In Plant Responses to Climatic Factors, 177188 (Ed. Slatyer, R. O.). Paris: UNESCO.
Welbank, P. J., French, S. W. & Witts, K. J. (1966). Dependence of yield of wheat varieties on their leaf duration. Annals of Botany 30:291299.
Wilson, D. (1975). Leaf growth, stomatal diffusion resistance and photosynthesis during droughting of L. perenne populations selected for contrasting stomatal length and frequency. Annals of Applied Biology 79:6782.
Wong, S. C., Crown, L. R. & Farquhar, G. D. (1979). Stomatal conductance correlates with photosynthetic capacity. Nature 288:424426.

The Balance between Leaf Area and Photosynthetic Activity in Determining Productivity of Fox-tail Millet (Setaria italica) under Rain-fed Conditions

  • V. R. Sashidhar (a1), T. G. Prasad (a1), S. J. Patil (a1), M. Udaya Kumar (a1) and K. S. Krishna Sastry (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed