Seasonal Rooting Response of Stem Cuttings of some Forest Tree Species to Auxins

Rooting response of stem cuttings of 35 tree species to different auxins during different seasons was investigated. The results show that (i) Plant species vary markedly in their ability to ischolar_main. Some ischolar_main easily, others with difficulty and still others do not ischolar_main even with auxin application; (ii) Planting season has a pronounced effect on ischolar_maining of cuttings and the effect appears to be correlated with seasonal changes in cambial activity during the annual cycle; and (iii) The effectiveness of auxins on ischolar_maining of cuttings varies with the season. An auxin may stimulate ischolar_maining of a plant species in one season but may inhibit it in other season. Again maximum ischolar_maining of the same plant species may be caused by two different auxins in two different seasons. The results are discussed in the light of available literature on the subject.