Leaf physiological aspects of nitrogen-use efficiency in Brassica campestris L.: quantitative genetic variation across nutrient treatments

1991 ◽  
Vol 81 (1) ◽  
pp. 64-70 ◽  
Author(s):  
A. S. Evans
Keyword(s):  
Genetic Variation ◽  
Nitrogen Use Efficiency ◽  
Brassica Campestris ◽  
Nitrogen Use ◽  
Quantitative Genetic ◽  
Use Efficiency

Nitrogen preference and genetic variation of cotton genotypes for nitrogen use efficiency

2020 ◽  
Vol 100 (6) ◽  
pp. 2761-2773 ◽  
Author(s):  
Asif Iqbal ◽  
Qiang Dong ◽  
Xiangru Wang ◽  
Hui‐Ping Gui ◽  
Hengheng Zhang ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
Cotton Genotypes ◽  
Use Efficiency

Genetic Variation for Nitrogen-Use Efficiency Among Selected Tropical Maize Hybrids Differing in Grain Yield Potential

2013 ◽  
Vol 27 (1) ◽  
pp. 31-52 ◽  
Author(s):  
Ayodeji Abe ◽  
Abebe Menkir ◽  
Stephen Patrick Moose ◽  
Victor Olawale Adetimirin ◽  
Amudalat Bolanle Olaniyan
Keyword(s):  
Genetic Variation ◽  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Yield Potential ◽  
Tropical Maize ◽  
Nitrogen Use ◽  
Maize Hybrids ◽  
Use Efficiency

scholarly journals Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet

2021 ◽  
Vol 12 ◽  
Author(s):  
Vijayalakshmi Pujarula ◽  
Madhu Pusuluri ◽  
Srikanth Bollam ◽  
Roma Rani Das ◽  
Rambabu Ratnala ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Pearl Millet ◽  
Nitrogen Use Efficiency ◽  
Utilization Efficiency ◽  
Sub Saharan Africa ◽  
Nitrogen Use ◽  
Global Diversity ◽  
Diversity Panel ◽  
Use Efficiency ◽  
Mapping Populations

Nitrogen (N) is one of the primary macronutrients required for crop growth and yield. This nutrient is especially limiting in the dry and low fertility soils where pearl millet [Pennisetum glaucum (L.) R. Br] is typically grown. Globally, pearl millet is the sixth most important cereal grown by subsistence farmers in the arid and semi-arid regions of sub-Saharan Africa and the Indian subcontinent. Most of these agro-ecologies have low N in the root zone soil strata. Therefore, there is an immense need to identify lines that use nitrogen efficiently. A set of 380 diverse pearl millet lines consisting of a global diversity panel (345), parents of mapping populations (20), and standard checks (15) were evaluated in an alpha-lattice design with two replications, 25 blocks, a three-row plot for 11 nitrogen use efficiency (NUE) related traits across three growing seasons (Summer 2017, Rainy 2017, and Summer 2018) in an N-depleted precision field under three different N levels (0%-N0, 50%-N50, 100%-N100 of recommended N, i.e., 100 kg ha–1). Analysis of variance revealed significant genetic variation for NUE-related traits across treatments and seasons. Nitrogen in limited condition (N0) resulted in a 27.6 and 17.6% reduction in grain yield (GY) and dry stover yield (DSY) compared to N50. Higher reduction in GY and DSY traits by 24.6 and 23.6% were observed under N0 compared to N100. Among the assessed traits, GY exhibited significant positive correlations with nitrogen utilization efficiency (NUtE) and nitrogen harvest index (NHI). This indicated the pivotal role of N remobilization to the grain in enhancing yield levels. Top 25 N-insensitive (NIS-top grain yielders) and N-sensitive (NS-poor grain yielders) genotypes were identified under low N conditions. Out of 25 NIS lines, nine genotypes (IP 10820, IP 17720, ICMB 01222-P1, IP 10379, ICMB 89111-P2, IP 8069, ICMB 90111-P2, ICMV IS89305, and ICMV 221) were common with the top 25 lines for N100 level showing the genotype plasticity toward varying N levels. Low N tolerant genotypes identified from the current investigation may help in the identification of genomic regions responsible for NUE and its deployment in pearl millet breeding programs through marker-assisted selection (MAS).

Genetic variation in nitrogen-use efficiency of tef

2006 ◽  
Vol 169 (5) ◽  
pp. 704-710 ◽  
Author(s):  
Alemayehu Balcha ◽  
Ralph Gretzmacher ◽  
Johann Vollmann
Keyword(s):  
Genetic Variation ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
Use Efficiency
Sign in / Sign up

Export Citation Format

Share Document