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Legume seed production meeting market requirements and economic impacts

Abstract : The seed is the carrier of the genetic improvements brought about by modern plant breeding, and seed production is carried out in accordance with certification systems to guarantee consistent high quality. In forage legumes, breeding efforts are primarily related to the vegetative development of the plant, although the commercial success of an agronomically superior cultivar is dependent on a reliable supply of competitively priced seed. In seed production of the three most important forage legumes, alfalfa (Medicago sativa L.), white clover (Trifolium repens L.), and red clover (Trifolium pratense L.), crop management techniques are applied to stimulate reproductive development in order to obtain high seed yields. These include a low plant density, manipulation of canopy size to avoid lodging and shading of fruiting organs, synchronization of flowering with pollinating insects as well as controlling pests. High seed yield is correlated to inflorescence density and seed yield per inflorescence, traits which should be selected for in breeding populations as moderate to high heritability has been found. However, seed yield is a genetically complex trait and in the perennial, insect-pollinated forage legumes it is further highly influenced by environmental conditions and crop management factors. Further investigations into the use of plant growth regulators and an improved understanding of the interaction between pollinators and the seed crop might improve future seed yields. There is likely to be an increasing emphasis on the role of forage legumes in producing high-quality meat and milk, combined with the requirement to reduce the environmental footprint of grassland agriculture. A high forage legume seed yield is a prerequisite to meet market requirements for new, improved cultivars and hence achieve the economic impacts of modern plant breeding for a better livelihood and environment.
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Submitted on : Wednesday, May 27, 2020 - 6:27:43 PM
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Birte Boelt, Bernadette Julier, Dura Karagic, John Hampton. Legume seed production meeting market requirements and economic impacts. Critical Reviews in Plant Sciences, Taylor & Francis, 2015, 34 (1-3), pp.412-427. ⟨10.1080/07352689.2014.898477⟩. ⟨hal-02635644⟩



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