Vol. 12, Issue 11 (2023)

Author(s):
Shruti Mallikarjun Kolur, Dr. R Vasantha Kumari, Dr. Chikkalingaiah, Dr. Seetharamu GK and Dr. Anuradha Sane

Abstract:
Selection of suitable breeding methodologies in bringing desirable improvement in crop plant require the complete knowledge about the nature of gene action involved in the inheritance of quantitative and quality traits. Gene action of growth, yield and quality traits in China aster (Callistephus chinensis (L.) Nees.) were studied through line x tester analysis of 27 F₁ hybrids derived by crossing of nine lines and three testers. The present study indicated the preponderance of non-additive gene action for plant height (cm), plant spread (cm), number of branches per plant, days for first flowering, days for 50 percent flowering, duration of flowering (days), flower diameter (cm), flower stalk length (cm), vase life (days), shelf life (days), number of flowers per plant, individual flower weight (g) and flower yield per plant (g). Due to expression of non-additive gene action for all parameters under study exhibited, heterosis breeding is required to be followed for exploitation of these traits.