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Measurement of thickness and water content of soybean leaves by beta gauging


Journal of Nuclear Agriculture & Biology 25(1): 1-8
Measurement of thickness and water content of soybean leaves by beta gauging
The effect of water stress over a period of seven days on the values of fresh leaf thickness, actual water content and the relative water content was studied using beta gauging technique in the leaves of two soybean varieties, PK-1029 and PK-1053. Measurements of these parameters were carried out using two different beta emitters 204Tl and 90Sr-90Y, and it was observed that even though the beta-particles from these sources had different end point energies, they yielded the same values of the physiological parameters. The variations in these parameters have been understood in terms of the changes in the meteorological factors such as the maximum atmospheric temperature, average relative humidity and the wind velocity. The results indicate that the leaves of variety PK-1053 are thinner as compared to those of PK-1029 and also, that the plants of variety PK-1053 can withstand greater degree of water stress as compared to the plants of variety PK-1029.


Accession: 002891974



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