Short Communication: Genetic similarity analysis of in vitro cultivated pineapple (Ananas comosus) from Sipahutar, North Sumatra, Indonesia using ISSR markers
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Abstract
Abstract. Harahap F, Nusyirwan N, Afiva A, Prasetya E, Suriani C, Hasibuan RFM, Poerwanto R. 2022. Short Communication: Genetic similarity analysis of in vitro cultivated pineapple (Ananas comosus) from Sipahutar, North Sumatra, Indonesia using ISSR markers. Biodiversitas 23: 5623-5628. Sipahutar pineapple from North Sumatra, Indonesia, is considered difficult to breed, resulting in a lack of seed availability. However, tissue culture allows the emergence of somaclonal variations, especially in plantlets undergoing several subculture stages. This study aimed to identify somaclonal variations in Sipahutar pineapple seedlings generated from in vitro culture using Inter Simple Sequence Repeat (ISSR) markers. Fifteen accessions were used in this study consisting of Sipahutar pineapple grown in its original environment, a laboratory environment, acclimatized, and in vitro cultured. Total of 10 primers, of which seven primers detected polymorphisms among the population. This study resulted in a low genetic similarity among the Sipahutar pineapple population. The genetic diversity of Sipahutar pineapple plants propagated by in vitro culture had a similarity level of 75%-94%, showing somaclonal variations in vitro culture. The genetic similarity of pineapple accessions was divided into two main clusters, namely cluster A consisted of 11 accessions and cluster B consisted of 4 accessions. Cluster separation does not correlate to the source of plant materials studied.
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