Indian Society of Genetics & Plant Breeding

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DIPLOIDIZATION AND FERTILITY IMPROVEMENT IN ADVANCED AUTOTETRAPLOIDS OF TRIGONELLA FOENUM-GRAECUM

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Meiotic analysis of four genotypes of autotetraploid Trigonella foenum-grat!Cllm over
generations (C., Cs and C12 generations) indicated that there is gradual decrease in
multivalents and univalents with simultaneous increase in bivalents; thus, revealing
diploidization process. Though autotetraploid Trigollella is vegetatively vigorous and
meiotically regular after 12 years of selection, the seed yield is still < 50% of their diploid
progenitors. Therefore, it may be concluded that poorfertility in autotetraploid T. foellumgraecum is controlled by certain genetical factors which could only be handle4 by genetic
manipulations.
 

Keywords: Trigonella foenum-grllecum, autotetraploid, diploidization, meiotic associations.

Info

Year: 1992
Volume: 52
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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