Department of Pomology, Dr Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan 173 230
The influence of triacontanol and paclobutrazol on the drought tolerance of nonpareil almond plants with four soil moisture tension levels, viz. −0.5, −2.5, −5 and −10 bars and two levels each of triacontanol and paclobutrazol were taken up. Plants irrigated at −0.5 bar and treated with 10 ppm triacontanol accumulated highest chlorophyll content along with the highest rate of photosynthesis, transpiration and stomatal conductance. Plants stressed at −10 bars and treated as control accumulated the lowest chlorophyll content, whereas plants irrigated at −10 bars and treated with 100 ppm paclobutrazol had the lowest photosynthesis, transpiration and stomatal conductance. Plants treated with triacontanol (10 ppm) performed better than those treated with other growth regulator.
