M. Babitha , P. S. Rao , Elusing Meru , A. Sreenivasulu

Abstract

An experiment was conducted on the effect of auxins on ischolar_maining stem cuttings of Givotia rottleriformis at Srinivasavanam Field Research Station, Tirupati. Three different hormones (IAA,IBA and NAA) were tried with 4 different concentrations (500,1000,3000 and 5000 ppm). Rooting was observed after 45 days in all the treated cuttings. IBA 3000 ppm treated cuttings showed highest ischolar_maining percentage (77.8) and it was at par with IBA 5000 ppm and differs significantly from others. IAA 500 ppm treated cuttings showed least ischolar_maining percentage (33.3). No ischolar_maining was observed in control.

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M. Babitha , A. Sreenivasulu , Elusing Meru , P. S. Rao

Abstract

Stumps of different girth classes of Bhadrachalam clone-l of Eucalyptus tereticornis of the same age were selected and coppiced. The coppice shoots were collected four times, each at 15 days interval separately from each of the girth classes and counted. It was observed that with the increase in the girth of the coppiced stump, the number of shoots produced per stump increased significantly. However no significantly differences were observed between the harvests. Thus it can be concluded from this study that the ability to produce coppice shoots may, in some way be related to the size of the donor tree, which may be due to increased coppicing ability or due to greater carbohydrate reserves in stumps of greater girth.

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M. Babitha , A. Sreenivasulu , Elusing Meru , P. S. Rao

Abstract

An experiment was conducted at Srinivasavanam Field Research Station, Tirupati, India to find out whether the position of the rejuvenated shoot on the Eucalyptus stock plant exerted any influence on the ischolar_main and shoot growth of cuttings. The results revealed that the area of the largest leaf, percentage of sprouting buds, ischolar_main length, fresh weight and moisture content of ischolar_mains showed significantly higher values in respect of cuttings taken from coppice shoots of coppiced stump 7-13 cm above the ground. On the contrary, survival percentage, number of shoots, number ofleaves and number of ischolar_mains per cutting did not differ significantly among the treatments. Hence it is ideal to harvest the juvenile coppice shoots from 7-13 cm height on the coppiced stump to produce good quality clones.

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M. Babitha , A. Sreenivasulu , Elusing Meru , P. S. Rao

Abstract

The ischolar_maining response in fourteen indigenous clones of Gmelina arborea, under intermittent mist conditions was studied. Leafless cuttings of 1-15 cm diameter and 15-20 cm length were prepared with one of two nodes. The cuttings were treated with 0.1% bavistin for 10 minutes. The treated cuttings were given quick dip in ischolar_main initiating hormone, i.e., Indole 3-Butyric Acid at 1000ppm concentration in talc base. Clone 136 showed highest percentage of ischolar_maining (85), while clone No. 130 showed the least performance (40). Significant differences were observed in ischolar_maining response among the different clones.

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