1Department of Horticulture, GB Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, Uttarakhand-263 145, India
2Department of Genetics and Plant Breeding, GB Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, Uttarakhand-263 145, India
*E mail: vikasjkumar88@gmail.com
Online published on 21 August, 2014.
The present investigations were carried to standardize the optimum temperature for better seed germination and subsequent seedling growth of Burdock (Arctium lappa). The seeds were soaked in fresh water for 24 hours, then subjected at 16°C, 18°C, 20°C, 24°C and 26°C of different batches in the seed germinator. The results revealed that the seeds of Arctium lappa exposed to 22°C gave better responses for germination, seedling growth along with other vigor parameters in term of peak value, germination value and germinative energy as compared to temperature regime of 16°C, 18°C, 20°C, 24°C and 26°C. The significantly maximum germination (89.01%), root length (4.97 cm), shoot length (7.36 cm), peak value (4.23), germination value (17.02) and germinative energy (0.86) was observed in seeds exposed at 22°C followed by 20°C. Thereby, indicating the 22°C temperature was found optimal for getting higher seed germination and seedling vigor for Burdock (Arctium lappa).
Arctium lappa, seed germination, temperature regime, seedling vigor, medicinal plants
