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Apomixis: Engineering the Ability to Harness Hybrid Vigor in Crop Plants

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First Online:
Part of the Methods in Molecular Biology book series (MIMB, volume 1669)

Abstract

Apomixis, commonly defined as asexual reproduction through seed, is a reproductive trait that occurs in only a few minor crops, but would be highly valuable in major crops. Apomixis results in seed-derived progenies that are genetically identical to their maternal parent. The advantage of apomixis would lie in seed propagation of elite food, feed, and biofuel crops that are heterozygous such as hybrid corn and switchgrass or self-pollinating crops for which no commercial-scale hybrid production system is available. While hybrid plants often outperform parental lines in growth and higher yields, production of hybrid seed is accomplished through carefully controlled, labor intensive crosses. Both small farmers in developing countries who produce their own seed and commercial companies that market hybrid seed could benefit from the establishment of engineered apomixis in plants. In this chapter, we review what has been learned from studying natural apomicts and mutations in sexual plants leading to apomixis-like development, plus discuss how the components of apomixis could be successfully engineered in plants.

Key words

Apomixis Hybrid vigor Apomeiosis Parthenogenesis MiMe PsASGR-BBML 
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© Springer Science+Business Media LLC 2017

Authors and Affiliations

  1. 1.Horticulture DepartmentNESPAL/University of Georgia-Tifton CampusTiftonUSA
  2. 2.Institute of Plant Breeding, Genetics and GenomicsUniversity of Georgia-Tifton CampusTiftonUSA

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