Studies on leaf traits of different stionic combinations in pear (Pyrus communis)

The biochemical and physiological evaluation of pear (Pyrus communis) cultivars, Carmen, Concorde, Red Bartlett and Packham’s Triumph was done on Quince A, BA 29, Quince C and Kainth rootstocks at Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, India during 2018-19. The highest leaf carbohydrate and starch content were reported in plants grafted on Quince C rootstock, whereas lowest on Quince A rootstock. Maximum total sugars and phenols were found in plants of Red Bartlett grafted on Quince C rootstock and minimum on Carmen grafted on Quince A. However, Carmen grafted on Quince A rootstock had highest total leaf chlorophyll content and uptake of nitrogen, phosphorus and potassium, whereas minimum on Red Bartlett grafted on Quince C rootstock. The correlation studies revealed a negative correlation among plant height, total sugars and phenols.