Vol. 19 No. 3
Study on Mendelian segregation pattern of Cry1Ac gene variability and association in UASD Cry1Ac transgenic Event No. 78 based F2 population in cotton
Author(s): N. SHILPA, M. S. MARALAPPANAVAR, L. GANGAVATI AND S. S. PATIL
Abstract: During 2019–2020 at the Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, India, the current study sought to understand the pattern of Cry1Ac gene segregation, variability, and association study among various morphological and quantitative traits in non–Bt and Bt plants of segregating F2 generation cotton (Gossypium hirsutum L.).The Cry1Ac gene behaved in the F2 population in a 3:1 Mendelian segregation pattern, according to the results of a chi-square test. Average boll weight, number of bolls, and seed cotton production per plant are features that showed high GCV, PCV, heritability, and genetic progress. The average boll weight, the number of bolls per plant, and the number of good opened bolls per plant all showed favourable correlations with seed cotton yield. In both the Bt and non-Bt plant groups, the number of bolls per plant and average boll weight were indirectly favourably influenced by seed cotton yield.
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