Study of Skewness and Kurtosis for Spikelet Sterility and Yield Related Traits in Segregating Generations of a Rice (Oryza sativa L.) Cross to Identify Gene Action
Priyanka Kumari¹², Jenny Priya Ekka¹, Swapnil³, Krishna Prasad¹, Ekhlaque Ahmad¹* and Manigopa Chakraborty¹
1 Department of Genetics and Plant Breeding, Birsa Agricultural University, Ranchi, Jharkhand;
2 Department of Plant Breeding and Genetics, Veer Kunwar Singh College of Agriculture, Bihar Agricultural University, Sabour, Bhagalpur,
3 Department of Genetics and Plant Breeding, Centurion University of Technology and Management, Paralakhemundi, Odisha.
*Corresponding author E-mail: ekhlaque.bau@gmail.com
Volume 17-(2), 2024 ; https://doi.org/10.58297/KLCF6831 Click here for Pdf
Abstract
An investigation was performed in the F6 and F7 generation of the cross Pusa-1176 x BPT-5204. The phenotypic screening was done intensely for spikelet sterility in F6 generation (Kharif, 2021) based on which some families were selected and grown as F7 generation (Kharif, 2022) that were sown as panicle to progeny rows at two different dates as set I and set II with the interval of 15 days in order to study the influence of environment on the traits under study. The segregates were studied for skewness and kurtosis to identify the presence of gene interactions in 13 quantitative traits including grain yield per plant (Fisher et al., 1932). The results displayed that various traits exhibited positive skewness along with platykurtic and leptokurtic frequency distribution in set I and set II. Similarly, a combination of negative skewness with platykurtic and leptokurtic frequency distribution was observed for diverse traits in set I and set II. Normal curve without skewness indicating symmetry of the trait and platykurtic frequency distribution was observed for L/B ratio in set I and for 100 seed weight in set II.