Abstract
Interploidy crosses between Lilium lancifolium (3x) and Asiatic lily cultivar ‘Brunello’ (4x) were attempted for creating genetic variability and to analyse the progenies for different ploidy levels. Experimental results revealed that most of the crosses attempted were developed into fruits, confirming that male-sterile triploid lilies can be used as the female parent for crossing with a suitable male parent. Wide variation in chromosome numbers (28 to 38) was obtained in different plant progenies, indicating that aneuploidy is generated by 3x × 4x crosses. The nuclear DNA content analysis of 13 plant progenies showed that the 2C nuclear DNA content has increased (range = 32.60 pg to 41.32 pg) as compared to Lilium lancifolium, while it was found lower than the cultivar ‘Brunello. Further, morphological characterization of different plant progenies revealed significant differences among themselves, which confirmed the dependence of these traits on cultivars ploidy level. Therefore, present findings will be instrumental for development of new Lilium cultivars with high aesthetic value and utility.
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