GENETICS OF FERTILITY RESTORATION OF A2 CYTOPLASM (CAJANUS SCARABAEOIDES) BASED LINES OF PIGEONPEAA. A. Khule, M.B. Patil, D.B. Kajale, S. Acharya, V.H. Kanbi , J.B. Patel and A.M. Patel
The present investigation was carried out to study the inheritance of fertility restoration in A2 cytoplasm (Cajanus scarabaeoides) using three male sterile (A) and three restorer (R) lines of pigeonpea. The five generations (P1, P2, F1, F2 and BC1F1) developed by crossing three cytoplasmic male sterile (A) lines with each of three restorer (R) lines. The F1 plants of all the nine hybrids were selfed to produce F2 seed and simultaneously crossed to their corresponding A lines to produce BC1F1 seeds during rainy season 2012-13 and evaluated in rainy season 2013-14 at Centre of Excellence for Research on Pulses, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, Gujarat, India. Dominancy of nuclear gene for fertility restoration results into 100% fertile plants in all the nine F1s. The segregation pattern of male fertility: male sterility of F2 and BC1 generations indicated that fertility restoration is controlled by both single dominant gene and digenic dominant genes with duplicate inheritance.
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