Single primer amplification reaction (SPAR) methods reveal subsequent increase in genetic variations in micropropagated plants of Nepenthes khasiana Hook. f. maintained for three consecutive regenerations.
The genetic fidelity of in vitro-raised plants of three successive regenerations of Nepenthes khasiana Hook. f. was assessed using three different single primer amplification reaction (SPAR) methods, viz., random amplified polymorphic DNA (RAPD), inter-simple sequence repeat (ISSR) and direct amplification of minisatellite DNA region (DAMD) markers. Out of 80 RAPD primers screened, 14 primers reflected a genetic variation of 4.1% in the first regeneration which was increased to 9.4% in the third regeneration. In the case of ISSR, out of 36 primers screened for assessment of genetic homogeneity of the regenerated plantlets, 12 primers showed an increase of genetic variation from 4.3% to 10% from the first to the third regenerations. In DAMD profiling, 15 primers were used for the evaluation of genetic fidelity where 8.47% of polymorphism was observed in the first regeneration which was increased to 13.33% in the third regeneration. The cumulative analysis reflected a genetic variation of 5.65% in the first regeneration which increased subsequently to 7.77% in the second regeneration and 10.87% in the third regeneration. The present study demonstrates SPAR technique to be an efficient tool for the assessment of clonal fidelity of in vitro-raised plants.
Department of Botany, North-Eastern Hill University, Shillong 793022, India.
Soibam Purnima
SP
Devi
Department of Botany, North-Eastern Hill University, Shillong 793022, India. Electronic address: sumankhatrikumaria@gmail.com.
Suman
S
Kumaria
Department of Biotechnology & Bioinformatics, North-Eastern Hill University, Shillong 793022, India.
Satyawada Rama
SR
Rao
Department of Botany, North-Eastern Hill University, Shillong 793022, India.
Pramod
P
Tandon
D017343:Genes, Plant; D018740:Genetic Heterogeneity; D005819:Genetic Markers; D019684:Magnoliopsida / Q000235:genetics*; D011110:Polymorphism, Genetic
D005819:Genetic Markers
Genetic fidelity; Micropropagation; Nepenthes khasiana; Nodal segments; Polymorphism; SPAR analysis