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Speed breeding in pulses: an opportunity to improve the efficiency of breeding programs
Crop & Pasture Science ( IF 1.8 ) Pub Date : 2021-03-24 , DOI: 10.1071/cp20462
Federico Cazzola , Carolina Julieta Bermejo , Ileana Gatti , Enrique Cointry

Pulses form an important component of the human diet, provide animal feed, and replenish soil fertility through biological nitrogen fixation. However, pulse breeding is a time consuming process. Most of the traditional breeding programs take 10–15 years to release an improved cultivar. In the breeder’s equation, a model of the expected change in a trait in response to selection, cycle time is the most powerful parameter for increasing genetic gain. Shuttle breeding, double haploids and in vitro culture are some of the methodologies that have been developed; however, they have not been able to be implemented efficiently in the breeding programs for pulses. In this context, speed breeding emerges as a technology that allows increased efficiency of the programs, reducing costs and the work required. The technique uses optimal light quality, light intensity, daylength and temperature control to accelerate photosynthesis and flowering, coupled with early seed harvest. It can be integrated with other breeding technologies, does not include transgenesis or gene editing, and is presented as a revolution to increase the efficiency of the programs. We present different advances in pulse breeding programs and propose a speed breeding system for pea (Pisum sativum L.) that includes hybridisations and advancing generations in a growth chamber. This review concludes by highlighting the opportunities and challenges to incorporating speed breeding into pulse breeding programs.



中文翻译:

加快育种速度:提高育种程序效率的机会

豆类是人类饮食的重要组成部分,可提供动物饲料,并通过生物固氮来补充土壤肥力。但是,脉冲育种是一个耗时的过程。大多数传统育种计划需要10到15年的时间才能发布改良的品种。在育种者方程中,该性状是响应选择的预期性状变化的模型,周期时间是增加遗传增益的最有力参数。穿梭繁殖,双单倍体和体外文化是已经开发的一些方法;但是,它们不能在豆类育种程序中有效实施。在这种情况下,速度育种作为一种可以提高程序效率,降低成本和所需工作的技术而出现。该技术利用最佳的光质量,光强度,日长和温度控制来加速光合作用和开花,并尽早收获种子。它可以与其他育种技术集成,不包括转基因或基因编辑,它是提高程序效率的革命。我们提出了脉冲育种计划的不同进展,并提出了豌豆(Pisum sativum)的快速育种系统L.),包括在生长室中杂交和后代。这篇综述总结了将速度育种纳入脉冲育种计划的机遇和挑战。

更新日期:2021-03-25
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