African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Influence of cytoplasmic genetic male sterility in the grain yield of maize hybrids

Luiz Augusto Rodrigues
  • Luiz Augusto Rodrigues
  • Corteva Agriscience, AMG900-1105 Road, Uberlândia to Indianópolis, km 06, Zip Code 38490-000, Indianópolis, MG, Brazil.
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Renzo Garcia Von Pinho
  • Renzo Garcia Von Pinho
  • Agriculture Department, Federal University of Lavras-UFLA, Doutor Sylvio Menicucci Ave, 1001, Presidente Kennedy, P. O. Box 3037, Zip code 37200-000, Lavras, MG, Brazil.
  • Google Scholar
Luiz Antonio Yanes Bernardo Junior
  • Luiz Antonio Yanes Bernardo Junior
  • Biology Department, Federal University of Lavras-UFLA, Doutor Sylvio Menicucci Ave, 1001, Presidente Kennedy, P. O. Box 3037, Zip code 37200-000, Lavras, MG, Brazil.
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Vander Fillipe de Souza
  • Vander Fillipe de Souza
  • Agriculture Department, Federal University of Lavras-UFLA, Doutor Sylvio Menicucci Ave, 1001, Presidente Kennedy, P. O. Box 3037, Zip code 37200-000, Lavras, MG, Brasil.
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Francielly de Cassia Pereira
  • Francielly de Cassia Pereira
  • Biology Department, Federal University of Lavras-UFLA, Doutor Sylvio Menicucci Ave, 1001, Presidente Kennedy, P. O. Box 3037, Zip code 37200-000, Lavras, MG, Brazil.
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Andre Humberto de Brito
  • Andre Humberto de Brito
  • Corteva Agriscience, AMG900-1105 Road, Uberlândia to Indianópolis, km 06, Zip Code 38490-000, Indianópolis, MG, Brazil.
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Edmir Marques Faria Filho
  • Edmir Marques Faria Filho
  • Corteva Agriscience, AMG900-1105 Road, Uberlândia to Indianópolis, km 06, Zip Code 38490-000, Indianópolis, MG, Brazil.
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  •  Received: 09 July 2018
  •  Accepted: 10 September 2018
  •  Published: 08 November 2018

Abstract

One of the main barriers to the production of hybrid maize seeds consists of needing detasseling of female parent in order to avoid contamination with unwanted pollen. This activity is a laborious practice, which makes the production more expensive and promotes productive losses. Thus, the use of cytoplasmic genetic male sterility can facilitate the hybridization process, and consequently, the production of hybrid seeds. The objective of this study was compare grain yield in maize hybrids produced from the combination of two testers with five distinct lines of cytoplasm C “Charrua” versus the isogenic of fertile cytoplasm. Twenty common hybrids were evaluated in relation to grain crops and resistance to leaf diseases, white spot and gray leaf spot. The experiments were carried out during summer season of 2015/2016 and winter season of 2016. The use of lines with cytoplasm C was observed and it is promising since it did not affect the agronomic performance of hybrids, regardless of environment, crop season, parental and tester used. Therefore, cytoplasm C can be used as an excellent source of cytoplasmic genetic sterility in the production of hybrid seeds in seed companies that want to decrease the use of detasseling practice.

Key words:  Zea mays L, production of seeds, detasseling.

 

Abbreviation

CMS, Cytoplasmic male sterility.