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Molecular polymorphism of rice cytoplasmic genetic male sterile (CMS), restorer lines and their hybrid combinations based on RAPD and isozymes analysis [electronic resource].

By:

Abou-Shousha, A. A

Contributor(s):

El-Mowafi, H. F

Language: English Summary language: Arabic Description: p.128-154Other title:

المشابهات الجزيئية لسلالات العقم الذكري السيتوبلازمي الوراثي وسلالات اعادة الخصوبة وتراكيبها الهجينية بناء علي تحليل ال RAPD والمشابهات الانزيمية Isozyme [Added title page title]

Uniform titles:

Journal of agricultural research Tanta University, 2003 v.29 (1) [electronic resource].

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Full Text Article

In: Journal of Agricultural Research Tanta University 2003.v.29(1)Summary: The cytoplasmic-genetic male sterility (CMS) system bas been the cornerstone of hybrid breeding world-wide. Maintaining genetic diversity in CMS germplasm is essential for reducing genetic vulnerability and increasing the likelihood of developing heterotic combinations. Using CMS lines from different cytosterility sources gave a broad range 0f diversity in currently-used local hybrid rice germplasm. In this study, RAPD and isozyme markers were employed to study the genetic variation among four diverse CMS and three Egyptian restorer elite parental lines widely used in hybrid rice breeding programs in Egypt. However, the relationship of genetic variation with hybrid performance and heterosis waS studied. Results of this study could be used to expedite the development of genetically diverse and heterotic rice hybrids in Egypt.

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The cytoplasmic-genetic male sterility (CMS) system bas been the cornerstone of hybrid breeding world-wide. Maintaining genetic diversity in CMS germplasm is essential for reducing genetic vulnerability and increasing the likelihood of developing heterotic combinations. Using CMS lines from different cytosterility sources gave a broad range 0f diversity in currently-used local hybrid rice germplasm. In this study, RAPD and isozyme markers were employed to study the genetic variation among four diverse CMS and three Egyptian restorer elite parental lines widely used in hybrid rice breeding programs in Egypt. However, the relationship of genetic variation with hybrid performance and heterosis waS studied. Results of this study could be used to expedite the development of genetically diverse and heterotic rice hybrids in Egypt.

Summary in Arabic.

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