1. a Department of Environmental Sciences , Dr Y S Parmar University of Horticulture and Forestry , Solan , India
2. b Department of Fruit Science , Dr Y S Parmar University of Horticulture and Forestry , Solan , India
3. c Regional Horticultural Research Station , Dr Y S Parmar University of Horticulture and Forestry , Sharbo (Reckong Peo) Kinnaur , India