Structural Hybridity and Genetic System of <i>Solanum nigrum</i> Complex

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  • RAO G.R.
    Department of Botany, Aligarh Muslim University
  • KHAN REAYAT
    Department of Botany, Aligarh Muslim University
  • KHAN A.H.
    Department of Botany, Aligarh Muslim University

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  • Structural hybridity and genetic system of Solanum nigrum complex

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Abstract

Morphological and cytological characters of Indian tetraploid S. nigrum (n=24) and S. nodiflorum (n=12) have been studied. The lack of close genetic relationship between the two species is shown by cytological studies of their triploid hybrids (n=18) which are sterile. It has been concluded that chromosomal sterility and cryptic structural hybridity play an important role in intersterility and the genetic distinctiveness of Indian tetraploid S. nigrum and S. nodiflorum.

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