Abstract

Two experiments were conducted, one in the field and one in a growth chamber to determine the range of translocation of ¹⁴C labeled photosynthate among peanut genotypes. Single attached leaves of peanut genotypes, which differed in photosynthetic rates, were exposed to ¹⁴CO₂ in the field and in a growth chamber. A significant difference in translocation was found among the genotypes in the growth chamber experiment with a range of 22 to 45%hamber. However, A. monticola Krap. et Rig., a wild species included in the growth cham of assimilated ¹⁴C translocation from the exposed leaf in 6 hours. The average translocation percentage of two cultivated genotypes (Arachis hypogaea L.), common to both experiments, was 27.2 in the field and 41.9 in the growth chamber. By comparison two wild species, A. pintoi Krap. et Greg. (Unpubl.) and A. villosulicarpa Hoehne translocated an average of 19.4% in the field and 27.4% in the growth cber experiment, had a translocation percentage similar to the cultivated species. A significant positive correlation (r = 0.79) was found between the rates of translocation and net photosynthetic rates.

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Keywords: Arachis hypogaea, photosynthate, Groundnut

How to Cite:

Bhagsari, A. & Brown, R., (1976) “Translocation of Photosynthetically Assimilated 14C in Peanut (Arachis) Genotypes¹”, Peanut Science 3(1), p.5-9. doi: https://doi.org/10.3146/i0095-3679-3-1-2

Author Notes

¹Contribution from the Department of Agronomy, University of Georgia Athens, Georgia 30602.