Advancement and efficacy of plant growth regulators in Ber (Ziziphus mauritiana Lamk) - A review

Abstract

Ber (Ziziphus maurtiana) is an important minor fruit crop of India. Over the years the crop is now widely domesticated and commercial orchards of Ber are now available. With wide commercialization, many physiological problems, i.e. flowers and fruit drop, embryo abortion, poor flowering and fruit setting, abnormal and small size fruits etc. were observed which cause huge loss to the growers. In order to minimize these problems, over the years many experiments and advancement have been done, and among them, usage of plant growth regulators is one of the most adopted methods and is utilized to improve flowering fruiting and yield with improved fruit quality. The current review discusses the role of different plant growth regulators and how they influence each fruit character. This information could be useful to the researchers in planning further advance research in this aspect and for the commercial growers to decide the proper treatments to mitigate the problems.

Influence of Different Levels of NAA and 2, 4, 5-T on Fruit Drop, Fruiting, Fruit Retention, Growth and Yield of Indian Ber (Zizyphus mauritiana Lamk.)

“…The increase in fruit retention might be due to effective of different chemicals as well as 2, 4, 5-T on metabolic activity of the plant and improved source sink relationship with favorably influenced the metabolic status resulting in better check of fruit drop and enhancing retention of the more number of fruits on the plants. The findings are in agreement with the reports of Pandey [16] in ber, Bhat et al [17] in litchi, Maurya et al [18] in mango, Kumar et al [19], Singh and Sharma [20] in ber.…”

“…The 2,4,5-T probably might be due to providing of right concentration of 2,4,5-T during investigation causing enhancement of vegetative growth of the plants hastening the production of more photosynthesis towards the fruit bearing area which contributed to increase fruit set in plant. These findings are collaborated with the reports of Pandey [16] in ber, Bhat et al, [17] in litchi, Maurya et al, [18] in mango, Kumar et al, [19], Singh and Sharma [20] in ber.…”

“…The induction in fruit drop was 2,4,5-T sprays possibly increased auxin synthesis which may cause to prevent fruit drop. These findings are collaborated with the reports of Deepa Lal et al, [25] in kinnow, Tiwari et al, [26] in aonla, Badal and Tripathi [27] in guava, Tripathi and Vivekanand [28] in aonla, Pandey et al, [29] in ber, Bhat et al, [17] in litchi, Maurya et al, [18] in mango, Kumar et al, [19], Singh and Sharma [20] in ber, Deepa Lal et al, [32] in kinnow.…”