TY  - BOOK
AU  - Gaonkar Amita R.
AU  - Bhat Sumangala
TI  - Studies on Ems Derived Mutational Variability in Mungbean for Yield and Foliar Disease Resistance
U1  - 581.56 
PY  - 2024///
CY  - Dharwad
PB  - University of Agricultural Sciences
KW  - Genetics and Plant Breeding
N2  - ABSTRACT

          A field experiment was conducted in kharif 2023 and summer 2024 at MARS, University of Agricultural Sciences, Dharwad, Karnataka. Of the 962 M2 plants, selected 176 were laid in augmented design under protected and unprotected conditions. Further, two to three seeds from each M2 plant were bulked and 1450 M3 plants were laid in unreplicated design to screen for fungal foliar diseases. They were screened for fungal foliar diseases during kharif 2023 and MYMV during summer 2024. 55 lines with good yields and resistance to fungal foliar diseases were forwarded to M4 generation, laid under protected and unprotected conditions in alpha lattice design. 24 M4 lines selected from the random bulk of M3 were laid in randomized complete block design under unprotected conditions. The results revealed significant differences for almost all the traits studied. Number of branches per plant, number of clusters per plant, number of pods per cluster that exhibited high values of PCV, GCV and heritability coupled with high genetic advance as per cent mean have to be given importance while formulating selection strategy. The mutant line DGGM-145 was resistant to anthracnose and moderately resistant to cercospora leaf spot, powdery mildew and MYMV. While, DGGM-178 was immune to MYMV. Ten and three mutant lines were resistant to cercospora leaf spot and anthracnose, respectively. Eleven and eighteen were found to be moderately resistant to powdery mildew and MYMV, respectively. Number of clusters per plant, pods per plant and hundred seed weight were found to have significant positive correlation and high direct effect on seed yield per plant can be used to practice indirect selection for yield. The superior mutants with high yields and disease resistance identified in the study were DGGM-122, DGGM-135, DGGM-75 and DGGM-55. These mutants can be screened in upcoming seasons to confirm their stability in performance
ER  -