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Designing Rice for the 22nd Century: Towards a Rice with an Enhanced Productivity and Efficient Photosynthetic Pathway

机译:在22世纪设计米饭:朝着生产力和高效光合途径的稻米

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Rice (Oryza sativa L.) has been cultivated as an important cereal crop for more than 9,000 years and more than half of the world’s population depend on rice as it is their primary source of energy. Almost 30% of the current world cereal production is represented by the rice alone. It is estimated that the world’s population will reach 9.1 billion by 2050 i.e. 34 percent higher than today and for ensuring an ample amount of food and nutrition to such large population, global consumption of cereals will need to increase from 2.6 to 2.9 billion tonnes by 2027. On the other hand, the impacts of climate change in agriculture are expected to be negative, threatening the global food security. Besides, agriculture and global food security will be severely affected due to the COVID-19 pandemics as its after-effects are yet to be ascertained. The world needs an introduction of a new “Green revolution” in agriculture to increase crop production for food security and biofuel, because conventional breeding method have not brought much of gains not keeping its pace with the world population growth. Hence, the current study was done to review the various ongoing approaches and possible ways of designing a rice with enhanced productivity and photosynthetic capacity. One of the ways to increase yields, photosynthetic capacity accompanied by an increased Water Use Efficiency (WUE) and Nutrient Use Efficiency could be to introduce C4 traits into rice. Besides, genetic engineering using CRISPR-Cas9, molecular breeding, developing ideotype, heterosis breeding, developing apomictic rice, nitrogen fixing rice, use of nanotechnology as well as precision farming are the probable future approaches for designing a rice with high productivity. However, there are challenges and limitations in developing such rice and further research in this matter could help us get closer to developing the future rice.
机译:米(Oryza Sativa L.)被培养为9000多年来的重要谷物作物,超过一半的世界人口依赖于大米,因为它是他们主要的能源来源。目前世界谷物生产的近30%由米饭仅由米饭代表。据估计,世界的人口将达到2050年的91亿亿,即34%高于今天,并确保额外的食物和营养增加,全球谷物消费将需要从2027年的2.6〜29亿吨增加到2027吨。另一方面,预计农业气候变化的影响将是负面的,威胁到全球粮食安全。此外,由于Covid-19 Pandemics尚未确定,农业和全球粮食安全将受到严重影响。世界需要引入农业的新的“绿色革命”,以增加粮食安全和生物燃料的作物生产,因为传统的育种方法并没有带来诸多收益,而不会与世界人口增长保持速度。因此,目前的研究是为了审查以增强的生产力和光合容量设计稻米的各种持续的方法和可能的方式。增加产量的方法之一,光合作用效率增加(WUE)和营养利用效率可能是将C4特征引入水稻中。此外,使用CRISPR-CAS9的基因工程,分子育种,发育表明型,杂种优势育种,开发的APOMicic米,氮素固定大米,纳米技术的使用以及精密养殖是设计具有高生产率的米饭的可能未来方法。然而,在开发这种大米和进一步的研究方面存在挑战和局限性在此事上可以帮助我们更接近发展未来的米饭。

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