Characterization and evaluation of putative mutant populations of polyembryonic mango genotype Nekkare for dwarfing rootstock traits

Authors

  • Nusrat Perveen PhD Scholar
  • Dinesh M R ICAR- Indian Institute of Horticultural Research, Bengaluru 560089
  • Sankaran M ICAR- Indian Institute of Horticultural Research, Bengaluru 560089
  • Hima Bindu K ICAR- Indian Institute of Horticultural Research, Bengaluru 560089
  • Shivashankara K S ICAR- Indian Institute of Horticultural Research, Bengaluru 560089
  • Venugopalan R ICAR- Indian Institute of Horticultural Research, Bengaluru 560089

DOI:

https://doi.org/10.24154/jhs.v17i2.1456

Keywords:

Gamma irradiation, mango, mutation, Nekkare, stomatal parameters

Abstract

Availability of dwarfing rootstocks is an important pre-requisite for improving productivity of mango orchards in India as it facilitates high density planting as well as impart uniformity within an orchard. An attempt was made to induce variability in polyembryonic mango genotype Nekkare for dwarfness by treating kernels with different doses of gamma radiation ranging from 15 to 35 Gy. Irradiation created significant variation in plant height, stem girth, number of nodes, inter-nodal length, number of leaves, leaf blade length and leaf blade width. The highest reduction in seedling height along with highest variation was observed at 35 Gy where the seedling height ranged from 11.50 to 33 cm with a mean of 23.12 cm as compared to mean plant height of 44.55 cm in control ranging from 33.50 to 56 cm. Further, the effect of irradiation on stomatal parameters was also investigated and the highest stomatal length and width was recorded at 15 Gy (63.39 μm) and 20 Gy (63.12 μm) respectively while 30 Gy treatment produced maximum stomatal density (13.85 per μm2). Furthermore, the
concentration of ABA was found to be highest (429.1 ng/gm) in morphologically dwarf (putative mutant) progenies of Nekkare. The results suggest effectiveness of induced mutation for developing dwarfing rootstocks in mango to be used in high density planting.

Downloads

Download data is not yet available.

Downloads

Published

31-12-2022

Issue

Section

Original Research Papers

How to Cite

Characterization and evaluation of putative mutant populations of polyembryonic mango genotype Nekkare for dwarfing rootstock traits. (2022). Journal of Horticultural Sciences, 17(2), 261-271. https://doi.org/10.24154/jhs.v17i2.1456

Similar Articles

1-10 of 173

You may also start an advanced similarity search for this article.

Most read articles by the same author(s)