An unusual epidemic form of leaf yellowing associated with stunted growth in rice varieties was observed in some parts of Tamil Nadu during 1984-85. An experiment was carried out to know whether varietal factors has got any influence on yellowing syndrome or not. The incidence of yellowing syndrome was less in IR 50, Co 41 and in the F4 cross derivaties involving IR 50 and CO 41 as parents. Since the syndrome being genetically controlled developing resistant lines for this stress condition could be possible through recombination breeding utilizing IR 50 and CO 41 rice varieties.
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Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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EDITOR-IN-CHIEF
Madras Agricultural Journal (MAJ)
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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