Effect of secondary associations on meiosis, pollen fertility and pollen size in cape gooseberry (Physalis peruviana L.)

This study deals with the detailed analysis on various meiotic abnormalities in the tetraploid cytotype (2n=4x=48) of Physalis peruviana L. The meiotic abnormalities include secondary associations of bivalents, stickiness of chromosomes, multivalents and univalents, and unoriented bivalents during m...

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Bibliographic Details
Published inChromosome Botany Vol. 6; no. 2; pp. 25 - 28
Main Authors Bala, Santosh, Gupta, Raghbir C.
Format Journal Article
LanguageEnglish
Japanese
Published International Society of Chromosome Botany 2011
Subjects
Anaphase
Chromatin
Chromosomes
Fertility
Meiosis
Micronuclei
Multivalents
Physalis peruviana
Pollen
Secondary associations
Tetrads
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Summary:This study deals with the detailed analysis on various meiotic abnormalities in the tetraploid cytotype (2n=4x=48) of Physalis peruviana L. The meiotic abnormalities include secondary associations of bivalents, stickiness of chromosomes, multivalents and univalents, and unoriented bivalents during metaphase-I, non-synchronization in the separation of some bivalents, laggards, chromatin bridges and cytomixis at various meiotic stages besides aberrant microsporogenesis. In spite of all these abnormalities, distribution of chromosomes at anaphases found to be normal. Microsporogenesis includes monads, dyads and tetrads with micronuclei besides normal tetrads, consequently reducing the pollen fertility (76%).
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ISSN:1881-5936
1881-8285
1881-8285
DOI:10.3199/iscb.6.25