Modern approaches for the genetic improvement of rice, wheat and maize for abiotic constraints-related traits: A comparative overview

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Abstract

After a basic description of the different sets of genetic tools and genomic approaches most relevant for modern crop breeding (e. g., QTL mapping, GWAS and genomic selection; transcrip-tomics, qPCR and RNA-seq; transgenesis and gene editing), this review paper describes their history and the main achievements in rice, wheat and maize research, with a further focus on crop traits related to the improvement of plant responses to face major abiotic constrains, including nutritional limitations, drought and heat tolerance, and nitrogen-use efficiency (NUE). Remarkable differences have been evidenced regarding the timing and degree of development of some genetic approaches among these major crops. The underlying reasons related to their distinct genome complexity, are also considered. Based on bibliographic records, drought tolerance and related topics (i.e., water-use efficiency) are by far the most abundantly addressed by molecular tools among the breeding objectives considered. Heat tolerance is usually more relevant than NUE in rice and wheat, while the opposite is true for maize.

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APA

Benavente, E., & Giménez, E. (2021, February 1). Modern approaches for the genetic improvement of rice, wheat and maize for abiotic constraints-related traits: A comparative overview. Agronomy. MDPI AG. https://doi.org/10.3390/AGRONOMY11020376

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