1. Aguiar CG, Schuster A, Amaral J (2008) Heterotic groups in tropical maize germplasm by testcrosses and simple sequence repeat markers. Genet Mol Res 7:1233–1244
2. Ajay BC, Byregowda M, Veerakumar GA, Reena M, Babu P, Ganapathy KN (2015) Heterosis and inbreeding depression for yield attributing characters in F2 and F3 generations of pigeonpea. Natl. Acad. Sci. Lett. (India) 38:179–181
3. Ariyanayagam RP, Rao AN, Zaveri PP (1993) Gene-cytoplasmic male-sterility in pigeonpea. Intl. Pigeonpea Newsl. 1:7–11
4. Bahadur B, Rao MM, Rao KL (1981) Studies on dimorphic stamen and pollen (SEM) and its possible role in pollination biology of pigeonpea (Cajanus cajan (L.) Millsp.). Indian J Bot 4:122–129
5. Bhatia GK, Gupta SC, Green JM, Sharma D (1981) Estimates of natural cross pollination in Cajanus cajan (L.) Millsp.: Several experimental approaches. Proc. Intl. Workshop on Pigeonpeas. International Crops Research Institute for the Semi-arid Tropics. Patancheru. 2:129–136