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Genetics of cytoplasmic-nuclear male sterility and identification of molecular markers of fertility restorer genes in pearl millet (pennisetum glaucum (l.) It. Br.)

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Title Genetics of cytoplasmic-nuclear male sterility and identification of molecular markers of fertility restorer genes in pearl millet (pennisetum glaucum (l.) It. Br.)
 
Creator Yadav, D V
 
Subject Millets
Genetics and Genomics
Agriculture-Farming, Production, Technology, Economics
 
Description The present investigation was undertaken to determine the inheritance of five diverse
CMS systems (Al, Ad, AqP, As and A,), allelic relationship of fertility restorer genes in
A1 and A4 CMS systems, genetic linkage between the fertility restorer genes of the Al
and A4 CMS systems, and identification of molecular markers linked to fertility
restoration of these two CMS systems in pearl millet. The plant material for the study
consisted of isonuclear A-lines of the five diverse male-sterility-inducing cytoplasm in
three diverse nuclear genetic backgrounds (SIB, 5054B and !CMB 88004) and six
pollen parents restoring the male fertility of hybrids based on any one, two or three
male-sterile cytoplasm. The segregation patterns of male-fertile (F) and male-sterile (S)
plants were studied in Fz, BCI [A x (A x R)] and BC2 [R x (A x R)] populations
produced from A r l< crosses. bzs produced from some of the (A x R) x (B x R) crosses.
and testcrosses obtained by crossing A-lines with individual plants of (B x R)-derived
F2 and BCI populations. The FI hybrids and BC2 populations produced from A x R
crosses for all the five CMS systems had all plants hlly fertile across the two test
environments of summer and rainy seasons, indicating that male-fertility is dominant
over male-sterility. The segregation patterns for F and S plants observed in the F2 and
BCI populations were tested for X' goodness of fit for monogenic, digenic and trigenic
ratios to determine the number of genes involved in the fertility restoration of each of
the five cytoplasmic-genic male-sterility (CMS) systems. A summary of the results
obtained in segregating populations and testcrosses included in the present study
conducted at 1C'RISAT-l'atanchcru is gikcn below.
 
Date 2005
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5941/1/63698.pdf
Yadav, D V (2005) Genetics of cytoplasmic-nuclear male sterility and identification of molecular markers of fertility restorer genes in pearl millet (pennisetum glaucum (l.) It. Br.). PhD thesis, Chaudhary Charan Singh Haryana Agricultural University.