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Morphological and Physiological Root Traits and Their Relationship with Nitrogen Uptake in Wheat Varieties Released from 1915 to 2013
- Source :
- Agronomy, Vol 11, Iss 1149, p 1149 (2021), Agronomy, Volume 11, Issue 6
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Identifying genotypes with a greater ability to absorb nitrogen (N) may be important to reducing N loss in the environment and improving the sustainability of agricultural systems. This study extends the knowledge of variability among wheat genotypes in terms of morphological or physiological root traits, N uptake under conditions of low soil N availability, and in the amount and rapidity of the use of N supplied with fertilizer. Nine genotypes of durum wheat were chosen for their different morpho-phenological characteristics and year of their release. The isotopic tracer 15N was used to measure the fertilizer N uptake efficiency. The results show that durum wheat breeding did not have univocal effects on the characteristics of the root system (weight, length, specific root length, etc.) or N uptake capacity. The differences in N uptake among the studied genotypes when grown in conditions of low N availability appear to be related more to differences in uptake efficiency per unit of weight and length of the root system than to differences in the morphological root traits. The differences among the genotypes in the speed and the ability to take advantage of the greater N availability, determined by N fertilization, appear to a certain extent to be related to the development of the root system and the photosynthesizing area. This study highlights some variability within the species in terms of the development, distribution, and efficiency of the root system, which suggests that there may be sufficient grounds for improving these traits with positive effects in terms of adaptability to difficult environments and resilience to climate change.
- Subjects :
- 0106 biological sciences
Genotype
N fertilizer recovery
media_common.quotation_subject
N uptake efficiency
chemistry.chemical_element
Root system
engineering.material
Biology
01 natural sciences
Adaptability
Human fertilization
Root length
genotypes
Wheat root
media_common
business.industry
Isotopic tracer
Agriculture
04 agricultural and veterinary sciences
Nitrogen
Agronomy
chemistry
040103 agronomy & agriculture
engineering
0401 agriculture, forestry, and fisheries
Fertilizer
wheat roots
business
Agronomy and Crop Science
010606 plant biology & botany
Subjects
Details
- Language :
- English
- ISSN :
- 20734395
- Volume :
- 11
- Issue :
- 1149
- Database :
- OpenAIRE
- Journal :
- Agronomy
- Accession number :
- edsair.doi.dedup.....2ab7d4d1e2879f5235be46827e4fdf71