Cytogentic Studies of induced Desynaptic Mutants in Barley (Hordeum vulgare L.)

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Author(s)

    • SINGH M. R.
    • Department of Agricultral Botany, Post Graduate College Ghazipur-233001

Abstract

Three induced barley desynaptic mutants DM63, DM92 and DM105 showed varying frequency of univalents and bivalents at MI. The range of univalents per cell was 2-8, 8-14, and 4-8 in these mutants. They exhibited unequal separations and lagging of chromosomes at AI. Multipolar separations and presence of micronuclei in spores were also observed. The mutants were monogenic recessive. ds63 (DM63) was found linked with marker genes V and e in chromosome 2. The recombination values of this gene with marker genes V and e were 40.68±3.74 and 20.71±4.82 respectively. It was mapped in chromosomes 2 in short arm left to marker gene e. Gene ds92 (DM92) was found linked with marker gene trd and B in chromosomes 5 and its recombination values with trd and B were 36.62±3.75 and 24.47±4.17 respectively. This gene was located proximal to B with respect to centromere in long arm of chromosome 1. Gene ds105 (DM105) was found linked with lk<SUB>2</SUB> and n in chromosome 1. The recombination values of this gene with lk<SUB>2</SUB> and n were 36.73±5.41 and 26.78±5.00 respectively. This gene was located in long arm of chromosome 1 in between centromere and marker gene n.

Journal

  • CYTOLOGIA

    CYTOLOGIA 67(2), 129-133, 2002-06-25

    Japan Mendel Society, International Society of Cytology

References:  15

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