渗入
农学
生物
栽培
种质资源
混合的
植物生理学
氮气
作物
基因
植物
化学
遗传学
有机化学
作者
Shabir H. Wani,Roshni Vijayan,Mukesh Choudhary,Anuj Kumar,Abbu Zaid,Vishal Singh,Pardeep Kumar,Jeshima Khan Yasin
标识
DOI:10.1007/s12298-021-01113-z
摘要
Nitrogen, the vital primary plant growth nutrient at deficit soil conditions, drastically affects the growth and yield of a crop. Over the years, excess use of inorganic nitrogenous fertilizers resulted in pollution, eutrophication and thereby demanding the reduction in the use of chemical fertilizers. Being a C4 plant with fibrous root system and high NUE, maize can be deployed to be the best candidate for better N uptake and utilization in nitrogen deficient soils. The maize germplasm sources has enormous genetic variation for better nitrogen uptake contributing traits. Adoption of single cross maize hybrids as well as inherent property of high NUE has helped maize cultivars to achieve the highest growth rate among the cereals during last decade. Further, considering the high cost of nitrogenous fertilizers, adverse effects on soil health and environmental impact, maize improvement demands better utilization of existing genetic variation for NUE via introgression of novel allelic combinations in existing cultivars. Marker assisted breeding efforts need to be supplemented with introgression of genes/QTLs related to NUE in ruling varieties and thereby enhancing the overall productivity of maize in a sustainable manner. To achieve this, we need mapped genes and network of interacting genes and proteins to be elucidated. Identified genes may be used in screening ideal maize genotypes in terms of better physiological functionality exhibiting high NUE. Future genome editing may help in developing lines with increased productivity under low N conditions in an environment of optimum agronomic practices.The online version contains supplementary material available at 10.1007/s12298-021-01113-z.
科研通智能强力驱动
Strongly Powered by AbleSci AI