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Chromosomal instability in Lathyrus sativus L.

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Summary

In Lathyrus sativus (2n=14), variety ‘LSD-1’ shows an instability of somatic chromosome number which can be observed in root tip and shoot tip mitoses. In this variety, approximately 54% of the seedlings showed intra-individual variation in chromosome number ranging from 2n=14−3. This variability in chromosome number was recorded in approximately 60% of the dividing cells. Two seedlings were triploid with 21 chromosomes. Variation in chromosome number in somatic cells within individual plants is possibly controlled by genetic factors, which result in spindle abnormalities, chromosome degradation and minute chromosomes. The variation in chromosome number is probably responsible for the pollen polymorphism noted in this particular strain. The possible mechanism of intra-individual variability and the occurrence of the phenomenon vis-a-vis its applications are discussed.

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Authors and Affiliations

  1. Department of Botany, Hindu College, Moradabad, India

    U. C. Lavania

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  1. U. C. Lavania
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Communicated by R. Riley

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Lavania, U.C. Chromosomal instability in Lathyrus sativus L.. Theoret. Appl. Genetics 62, 135–138 (1982). https://doi.org/10.1007/BF00293345

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  • DOI: https://doi.org/10.1007/BF00293345

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