Indian Society of Genetics & Plant Breeding

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CYTOPLASMIC ULTRASTRUCTURE AND DOWNY MILDEW RESISTANCE IN PEARL MILLET

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In pearl millet, cytoplasmic diversity was studied using electron microscopyatthree growth
stages of male sterile and fertile lines which represented susceptible control,Tifton 23, and
five other downy mildew resistant/immune lines. Structural superiority of the resistant
lines over susceptible control was evident, particularly for the following attributes:
polyribosomal density, granum density, mode of phenolic generation, mechanism for
cytoplasmic compartmentalisation, organization of grana and stroma in chloroplast and
shape of plasma membrane. This has been discussed as a possible criterion for selecting
lines resistant to downy mildew.
 

Keywords: Pearl millet, downy mildew, disease resistance, male sterile, ultrastructure.

Info

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

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