Some researchers used a low dose of gamma ray to

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Unformatted text preview: itro shoots of pear (Pyrus communis L.) cultivars ‘Conference’, ‘Doyenné d’Hiver’, ‘Passe Crassane’, ‘Bartlett’, ‘Abbé Fetel,’ and ‘Butirra Precoce Morettini’ were irradiated with a low dose of gamma rays (3.5 Gy) (Predieri and Zimmerman, 2001). In vitro shoot tip explants of Rhododendron varieties ‘Alfred’ and ‘Paars’ were irradiated with doses of 5 and 10 Gy of gamma rays (Atak et al., 2011). Puchooa (2005), working with in vitro plantlets of Anthurium variety ‘Nitta’, stated that the best response was observed with 5 Gy of treatment in terms of regeneration, and 10 Gy was moderately lethal to the explants, while a 15 Gy dose was lethal. Interestingly, some researchers reported that gamma irradiation can increase the quality of the explants. For example, the germination of potato microtubers derived from in-vitro–irradiated microstems (20 and 40 Gy) increased significantly as compared to the nonirradiated microstems (Das et al., 2000). 4.2. Mana...
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This document was uploaded on 02/23/2014.

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