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ARS Home » Southeast Area » Stuttgart, Arkansas » Dale Bumpers National Rice Research Center » Research » Publications at this Location » Publication #297706
Title: Breeding maintainer lines for hybrid rice

Author
item YAN, ZONGBU - University Of Arkansas
item DEREN, CHRISTOPHER - University Of Arkansas
item Yan, Wengui

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Proceedings
Publication Acceptance Date: 10/5/2013
Publication Date: 11/3/2013
Citation: Yan, Z., Deren, C.W., Yan, W. 2013. Breeding maintainer lines for hybrid rice. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper number 77565. Poster number 615. Available: https://scisoc.confex.com/scisoc/2013am/webprogram/Paper77565.html.

Interpretive Summary:

Technical Abstract: Maintainer lines are a component of 3-line hybrid rice production, necessary to perpetuate the male-sterile (MS) line. In practice, it is often the maintainer that is bred with an array of desirable traits, then male-sterility is transferred in through several backcrosses with the new maintainer to establish the male-sterile line. Twenty rice accessions from the USDA/ARS rice germplasm collection were used in developing new maintainer lines at the University of Arkansas Rice Research Center. There were 3 from Korea, 5 from China, 4 from IRRI, 2 from Japan, and 6 from the US. One hundred crosses of these lines in various combinations were then observed in segregating populations (F2 to F5) under greenhouse and field conditions. Particular emphasis was placed on traits such as stigma exsertion, flowering date, and panicle position as well as the usual array of agronomic and grain quality traits. Thirty lines were finally selected out of the F5 generation with desirable phenotypes for backcrossing with male-sterile lines and subsequent testing for combining ability with chosen restorers. Several hybrids resulting from new MS and maintainer lines have performed well in regional yield tests.