Chromosome numbers and Karyotypes of some Thai bananas
1991
Benchamas Silayoi | Prawat Sompen (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Horticulture)
Chromosome number of thirty accessions of bananas, both wild and cultivated ones were investigated by squashing root tip technique. There were 11 diploids (2n=22) namely: Kluai Pa number 1, Kluai Pa number 3, Kluai Ang Kang, Kluai Khae, Kluai Khai, Kluai Tani, Kluai Khai Boran, Kluai Thong Khi Meaw, Kluai Pa number 22, Kluai Lai and Kluai Mak. The triploids (2n=33) were kluai khrao, Kluai Neu Mu Nang, Kluai Nam Kap Dum, Kluai Kung Khieo, Kluai Nam, Kluai Tip, Kluai Leb Chang Kut, Kluai Tip Khum, Kluai Khom Bao, Kluai Khom Nak, Kluai Namwa Luang, Kluai Kung, Kluai Klong Chang, Kluai Phama Haek Kuk, Kluai Nang Klai, Kluai Hom Tia, Kluai Namwa Khom and Kluai Khai Bong. Only Kluai Teparot was tetraploid (2=44). The karyotype of those chromosomes were studied by measuring the length of long and short arms and grouped them into metacentric, submetacentric, subtelocentric and telocentric. The lengths varied from 1.22 to 3.93 microns. The chromosome of 'acuminata' relatives were metacentric and submetacentric such as: Kluai Pa number 1, Kluai Pa number 3, Kluai Khae, Kluai Khai, Kluai Khai Boran, Kluai Thong Khi Meaw, Kluai Lai, Kluai Mak, Kluai Khrao, Kluai Kung Khieo, Kluai Kung, Kluai Klong Chang and Kluai Khai Bong, The rests were hybrids of Musa acuminata Colla. and Musa balbisiana Colla. The karyotypes were metacentric, submetacentric and subtelocentric
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