Identification of improved source of wide compatibility gene and sterility gene(s) in inter-subspecific crosses of rice (Oryza sativa).


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Authors

  • SANJEET KUMAR
  • S N CHAKRABARTI

Keywords:

indica, inter-subspecific crosses, japonica, Oryza sativa, wide compatibility

Abstract

A study was conducted during dry season of 1995, wet seasons of 1995 and 1996 at Cuttack and New Delhi to
identify improved source of wide compatibility gene and sterility gene(s) in inter-sub specific crosses (indica x japonica) of rice COryza sativa L.) Although attempts were made to develop 28 inter-subspecific crosses and four reciprocal crosses involving four japonicas as female and seven indicas as male parents, progenies of 26 cross combinations and three reciprocals were finally evaluated for spikelet (female) and pollen (male) fertility. 'JD-8' has been identified as new improved source of wide compatibility gene. Association of high pollen fertility with high spikelet sterility in all crosses has been explained in the light of expression of spikelet of sterility gene(s) in materials utilized. Possible
involvement of cytoplasmic genome in the expression of spikelet sterility was ruled out since there was no significant
difference in the spikelet fertility between 3 crosses and their reciprocals.

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Author Biographies

  • SANJEET KUMAR
    Scientist (Genetics), Indian Institute of Vegetable Research, Varanasi 221 005
  • S N CHAKRABARTI
    Principal Scientist, Indian Agricultural Research Institute, New Delhi 110 012

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Issue

Vol. 70 No. 7 (2000)

Section

Articles

License

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How to Cite

KUMAR, S., & CHAKRABARTI, S. N. (2013). Identification of improved source of wide compatibility gene and sterility gene(s) in inter-subspecific crosses of rice (Oryza sativa). The Indian Journal of Agricultural Sciences, 70(7). https://epubs.icar.org.in/index.php/IJAgS/article/view/28617