DISCOVERY OF SPONTANEOUS TRIPLOID OF ALLIUM TUBEROSUM

It was a fine variety of fragrant-flowered garlic(Allium tuberosum Rottl. ex Spreng.)that was discovered in the western of Yunnan Province in 1982. It grows vigorously but does not bear fruit. It can be propagated asexually only by bulb. Its karyotype was studied The chromosome number in its somatic cells is 2n=24, which contains three complete sets of chromosomes and is a triploid. The karyotype is 2n = 3x = 24 = 21m +3st. The genome constitution of the triploid is very similar to that of widely cultivated tetraploid. As the triploid variety is of some superior qualities, it is propagated vegetatively by local peasants.