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prostaglandins. Chunks of aloe pulp are popular as beverages in Asia. Aloe has longÂ been propagated by splitting its off-shoots, and this may account for its narrow geneticÂ variations. In this research, genetic variations of A. vera and A. vera var. Chinensis, wereÂ induced by gamma irradiation. In vitro shoots of Aloe were irradiated with gamma ray atÂ the dosage of 10-60 gy, then propagated on Murashige and Skoog (MS) solid mediumÂ containing 1 mg/l BAP. The results showed that shootlets of A. vera var. ChinensisÂ were still alive up to 40 gy but the leaves became stiffer, while A. vera only toleratedÂ irradiation up to 20gy. At 50-60 gy, all cultures died after 2 months. Visual observationÂ on irradiated in vitro shoots showed that new variants appeared at the dosage of 20 gy,Â although in very low frequencies. Leaves became half green and half white in A. veraÂ and white-green-white in A. vera var. Chinensis. Confirmation whether those variantsÂ were of genetic or morphological origin needs to be further investigated.
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