No abstract

Subclonal variations play an important role in sugarcane varietal improvement. It is proven that some tissue culture variants are superior than the donor clones in terms of higher biomass, sugar yield and disease resistance. Only limited studies are reported on the tissue culture variants derived from intergeneric hybrid donors and its usefulness for crop improvement. The subclonal populations were derived from intergeneric hybrids (S. officinarum x Erianthus procerus) of sugarcane using 2,4 -D and caffeine for callus induction and kinetin and caffeine for differentiation. A total of 580 subclones were developed from 30 donor clones which were planted in a replicated trial along with donor clones. The biometric characters viz., stalk length, stalk thickness, internode length and single clump weight were recorded. The biochemical parameters were also studied including fiber per cent cane and POCS per cent. The results revealed that the subclonal populations showed wider variations for all the characters studied. Out of 580 subclones studied, 82 variants were selected for parental line and energy cane which had more than 16 per cent of fiber and 7.5 per cent of POCS. 38 subclones were selected for commercial lines with 13 per cent of fiber and POCS of 10 and above. Selection procedures adopted have shown that substantial gains could be made in one 'tissue culture generation' over the donor clones. Thus, this system helps to spread the variations and select individuals with specific characters for breeding and commercialization.

Background: A taping is often used to preventgiving-ways in the joint with ankle instability. However, it remains unknown whether the application of a taping modifies abnormal kinematics in ankle instability joints. Ankle Instability is characterized by recurrent giving way and often develops after repeated lateral ankle sprains. Basically, athletes are more prone to ankle instability in order to prevent reoccurrence of injury especially ankle instability. Aim: To evaluate the effectiveness of semi rigid taping vs. k-taping on functional performance in ankle instable athletes. Method: 40 Participants was randomly assigned to two groups. Volunteers with functional ankle instability following ankle inversion sprain were recruited from among students of the Annamalai University. Prior to participation in the study, all participants provided written informed consent. Results: The semi rigid taping group scored a CAIT rating scale means value of 21.07 ±5.37 and Kinesio taping group shows a mean value of 23.02±5.20 with a “t” value of 8.58 and a significant of “p” value 0.00001. This shows that the kinesio taping was highly effective in improving in ankle instability athletes. Conclusion: CAIT analysis clearly showed the stabilizing effect of both kinesio taping and semi rigid taping on the athletes with ankle instability.