A new cytoplasmic-nuclear male sterility system in pearl millet

Rai, K N (1995) A new cytoplasmic-nuclear male sterility system in pearl millet. Plant Breeding, 114 (5). pp. 445-447. ISSN 0179-9541

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Among the cytoplasmic-nuclear male sterility (CMS) systems reported in pearl millet, Pennisetum glaucum (L.) R. Br., the Am= A4 system produces the highest frequency of male-sterile hybrids. A CMS source identified in a large-seeded gene pool (LSGP) was compared with the A4 system. Seven diverse restorer lines of the A4 system produced hybrids with 81A4 that were all fertile (pollen-shedding score 4 and 68–89% selfed seedset). In contrast, all the hybrids of these inbreds made with the isonuclear line with the LSGP cytoplasm were sterile (pollen-shedding score 1 and 0–3% selfed seedset). Topcross hybrids of four diverse composites made with 81A4 had 10–35% plants that had good fertility (> 50% selfed seedset). In comparison, no plant of any topcross hybrid with the isonuclear line having LSGP cytoplasm exceeded 20% selfed seedset, and it was rare for a plant to exceed even 10% selfed seedset. These differential fertility restoration patterns of hybrids indicate that the LSGP cytoplasm represents a CMS system that is different from the A4 and, by implication, from all those reported to date. This new CMS system is designated A5

Item Type: Article
Uncontrolled Keywords: Pennisetum glaucum; cytoplasm; fertility restoration; hybrids; male sterility
Subjects: Mandate crops > Millets
Depositing User: Ms K Syamalamba
Date Deposited: 13 Oct 2011 11:01
Last Modified: 13 Oct 2011 11:01
URI: http://oar.icrisat.org/id/eprint/2450
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1439-...
Acknowledgement: UNSPECIFIED
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