1. Cardamom Research Station, Kerala Agricultural University, Pampadumpara, Idukki, Kerala, India;
2. Department of Plant Biotechnology, PRIST Deemed University, Vallam, Thanjavur, Tamil Nadu, India;
3. Department of Crop Improvement, Agricultural College and Research Institute, TNAU, Echankottai, Thanjavur, Tamil Nadu, India;
4. Department of Plant Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, Canada