Effect of physical mutagens on base population of tuberose (Polyanthus tuberosa L.)

Abstract

An investigation was conducted at the Department of Horticulture, College of Agriculture Parbhani, during which studies on tuberose (Polyanthus tuberosa L.) mutation breeding were explored and promising mutants were isolated. In VM1 generation and VM2 generation, the experimental material was Phule Rajani of tuberose variety treated with five doses of 0.5 Kr, 1Kr, 1.5Kr, 2Kr, and 2.5 Kr. The maximum floral abnormalities were observed in treatment T4 in the VM1 generation, whereas the maximum flower abnormalities were observed in treatment T3 in the VM2 generation. In the VM1 generation, the highest mutation frequency was reported at treatment T3. Treatment T1 had the highest mutation frequency in the VM2 generation. In early mutant characters, the highest percentage of the spectrum was seen in treatment T2 in VM1 and VM2. In both generations, the greatest spectrum percentage was recorded in the flower colour mutant character in treatment T2. In all generations, the greatest spectrum % was recorded in the tiny flower mutant at treatment T4. In both generations of the Big flower mutant, the highest spectrum % was found in treatment T1. In mutant characteristics, the number of petals increased, and the greatest spectrum percentage was seen at treatment T2 in VM1. Maximum generation in VM2 at T1 therapy. In the VM1 generation, the number of spikes increased, and the spectrum % rose. At treatment T2, the number of spikes in the VM2 generation increased. In the VM1 and VM2 generations, the greatest spectrum % was seen in late mutant characters at treatment T5. Both generational variations can be seen.