Effect of Gamma Radiation and Oryzalin Treatment on the Survival and Growth of Balsam (Impatiens balsamina)

Author: Sumit Pal, Anil K. Singh and Anjana Sisodia

Download PDF

Abstract

The present study was conducted at Horticulture Research Farm, Banaras Hindu University, Varanasi with a view to evaluate the effect of doses of gamma radiation (35 kR and 40 kR from 60Co source) and oryzalin (50 µmol, 100 µmol and 150 µmol) on the survival and growth of balsam (Impatiens balsamina). The experiment was conducted on 29 selected genotypes of balsam. Experiment was laid out in a Randomized Block Design with three replications. It was observed that survival of BDR-2 and BSV-11 was significantly increased over untreated control among all other genotypes. The maximum survival percentage of genotypes was observed with genotypes treated with low dose of gamma i.e. 35 kR (50.92 and 55.75 during M1 and M2 generation) while low survival was observed with high dose of oryzalin i.e. 150 µmol (41.86 and 53.01 during M1 and M2 generation). Five parameters were taken into the consideration to estimate the overall growth of balsam i.e. number of primary branches per plant, fresh weight of leaves (g), number of leaves per plant, diameter of stem (mm) and height of plant (cm). It was noted that genotypes viz., BDR-1, BDV-1, BS-39, BS-14, BS-23, BSW-7 etc. showed positive response to the treatments in terms of number of primary branches per plant during both consecutive years of experiment. Similarly, BSW-7 along with few other also showed positive correlation with the treatments in terms of plant height (cm) and fresh weight of leaves (g). The genotype BDR-4 had also represented the results in equal manner in terms of stem diameter (mm). The maximum growth during M1 and M2 generation observed with treatment of 50 µmol (13.01 and 13.60 in terms of number of primary branches), 50 µmol and 40kR (0.54 and 0.96 in terms of fresh weight (g) of leaf), 35kR and 50 µmol (503.42 and 476.72 in terms of number of leaves), 50 µmol (23.17 and 23.32 in terms of diameter (mm) of stem), 50 µmol and 35kR (74.18 and 97.22 in terms of height (cm) of plant). Moreover, it was observed that all the genotypes showed positive response to the treatments except in terms of survival where the decreasing trend was observed with increasing doses of the treatments.

Keywords

Gamma Radiation, oryzalin treatment, Impatiens balsamina.

Conclusion

-

References

-

How to cite this article

Sumit Pal, Anil K. Singh and Anjana Sisodia (2023). Effect of Gamma Radiation and Oryzalin Treatment on the Survival and Growth of Balsam (Impatiens balsamina). Biological Forum – An International Journal, 15(6): 236-242.