EFFECT OF PHYSICAL MUTAGENS ON BASE POPULATION OFTUBEROSE (POLYANTHUS TUBEROSA L.)Abhangrao A.K. , Jitendra Kumar Sahoo and Anis MirzaAbstract An investigation was conducted at the Department of Horticulture, College of Agriculture Parbhani, duringwhich studies on tuberose (Polyanthus tuberosa L.) mutation breeding were explored and promising mutantswere isolated. In VM1 generation and VM2 generation, the experimental material was Phule Rajani oftuberose variety treated with five doses of 0.5 Kr, 1Kr, 1.5Kr, 2Kr, and 2.5 Kr. The maximum floralabnormalities were observed in treatment T4 in the VM1 generation, whereas the maximum flowerabnormalities were observed in treatment T3 in the VM2 generation. In the VM1 generation, the highestmutation frequency was reported at treatment T3. Treatment T1 had the highest mutation frequency in theVM2 generation. In early mutant characters, the highest percentage of the spectrum was seen in treatmentT2 in VM1 and VM2. In both generations, the greatest spectrum percentage was recorded in the flowercolour mutant character in treatment T2. In all generations, the greatest spectrum % was recorded in thetiny flower mutant at treatment T4. In both generations of the Big flower mutant, the highest spectrum %was found in treatmentT1. In mutant characteristics, the number of petals increased, and the greatestspectrum percentage was seen at treatment T2 in VM1. Maximum generation in VM2 at T1 therapy. In theVM1 generation, the number of spikes increased, and the spectrum % rose. At treatment T2, the number ofspikes in the VM2 generation increased. In the VM1 and VM2 generations, the greatest spectrum % wasseen in late mutant characters at treatment T5. Both generational variations can be seen. |