Individual and combined (Plus-hybrid) effect of cytoplasmic male sterility and xenia on maize grain yield

Plus-hybrid effect refers to a combined effect of cytoplasmic male sterility (CMS) and xenia in maize ( Zea mays L.) It could be used in commercial production by growing a mixture of 80% CMS hybrid and 20% of another fertile hybrid. The aim of this research was to examine individual and combined CMS...

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Bibliographic Details
Published in:Chilean journal of agricultural research 2015-06, Vol.75 (2), p.160-167
Main Authors: Bozinovic, Sofijia, Prodanovic, Slaven, Vancetovic, Jelena, Nikolic, Ana, Ristic, Danijela, Kostadinovic, Marija, Ignjatovic, Dragana
Format: Article
Language:English
Subjects:
AGRICULTURE, MULTIDISCIPLINARY
AGRONOMY
Crop yields
Cytoplasm
Cytoplasmic male sterility
Females
Fertility
Genetic aspects
Genomes
Hybrid corn
Mitochondrial DNA
Plant reproduction
plus-hybrid effect
Pollinators
Seeds
Xenia
Zea mays
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Summary:Plus-hybrid effect refers to a combined effect of cytoplasmic male sterility (CMS) and xenia in maize ( Zea mays L.) It could be used in commercial production by growing a mixture of 80% CMS hybrid and 20% of another fertile hybrid. The aim of this research was to examine individual and combined CMS and xenia effects on two hybrids widely grown in Serbia. Sterile and fertile versions of ZP 1 and ZP 2 hybrids (three-way; Iodent × Lancaster dents) were used as females, while ZP 1, ZP 2, ZP 3, ZP 4, and ZP 5 (three-way or single cross; Iodent (BSSS) × Lancaster dents) were used as pollinators. All of them belong to medium maturity group. The trial was set up at one location in Serbia (Zemun Polje) in 2009, 2010, and 2011. Molecular analysis of the five genotypes was done using simple sequence repeat (SSR) primers. Plus-hybrid effect on grain yield ranged from -6.2% to 6.2%; on thousand kernel weight from -1.7% to 5.2%; on number of kernels per area from -1.0% to 8.0%. The poor response could be due to a use of three-way instead of single cross hybrids in S type of sterility. Modified Rogers' distance between hybrids was in the range 0.211 to 0.378 and was not relevant for the effect, which depended mostly on the sterile hybrid genotype and the fertile hybrid pollinator ability. This approach should be more suitable for female hybrids with slightly poorer performance, already being produced on a sterile base.
ISSN:0718-5820
0718-5839
0718-5839
DOI:10.4067/S0718-58392015000200004