Sacarose e pH na germinação in vitro de grãos de pólen de citros Sucrose and pH on in vitro pollen germination of citros
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Abstract
This work was carried out in order to evaluate the effect of sucrose and pH on in vitro pollen germination of cultivars Valencia, Natal and Pera (Citrus sinensis Osbeck). Pollens were distributed in Petri dishes containing culture medium with 10 gL-1 of agar 800 mgL-1 calcium nitrate, 200 mgL-1 boric acid, added of sucrose (0, 50, 100, 150 and 200 gL-1) In order to verify the satisfactory pH, the pollen were inoculated in culture middle containing 10 agar gL-1 and 800 mgL-1 calcium nitrate, 200 mgL-1 acid bórico,100 sucrose gL-1 and pH values of 3,5; 4,0; 4,5; 5,0; 5,5; 6,0; 6,5. After inoculation, pollen were incubated at 25ºC for 12 hours B.O.D. The largest germination percentage was obtained with an aid of optical microscope with lens of 10 X. For all the studied varieties, the largest germination percentage was obtained with 100gL-1 of sucrose and the largest number pollen germinated was verified at pH 6,5, being observed that for larger pH the values of the amount of pollens burst also increased for the cultivars Natal and Pera and they decreased for Valencia.
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salles2006sacarosecincia
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| Authors | Salles, Leila Aparecida;Ramos, José Darlan;Pasqual, Moacir;Junqueira, Keize Pereira;Silva, Adriano Bortolotti da; |
| Journal | ciencia e agrotecnologia |
| Year | 2006 |
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