scholarly journals Genetic diversity of potato for nitrogen use efficiency under low input conditions in Ethiopia

2017 ◽  
Author(s):  
Baye Berihun Getahun
Euphytica ◽  
2012 ◽  
Vol 191 (2) ◽  
pp. 291-299 ◽  
Author(s):  
Gabriel Borges Mundim ◽  
José Marcelo Soriano Viana ◽  
Ciro Maia ◽  
Geísa Pinheiro Paes ◽  
Rodrigo Oliveira DeLima

2018 ◽  
Vol 5 (3) ◽  
pp. 79-88
Author(s):  
Chairunnisak Chairunnisak ◽  
Sugiyanta Sugiyanta ◽  
Edi Santosa

Nitrogen use efficiency (NUE) is a necessitate in order to enhance sustainable rice farming in Indonesia. Thus, objective of present research was to evaluate NUE of local and national Indonesian superior aromatic rice treated with different levels of nitrogen fertilizer (N). Planting plot was arranged using five levels of N as the main plot, i.e; 0, 45, 90, 135 and 180 kg ha-1; and two rice varieties as subplot, i.e: Sigupai Abdya (local) and Inpari 23 Bantul (national). The results showed application 180 kg N ha-1 to Sigupai  Abdya significantly increased the plant height. However, it also postponed the flowering time. Inpari 23 Bantul treated with 180 kg N ha-1 produced the highest number of tillers. Combination of 90 kg N ha-1 with Sigupai Abdya variety significantly reduced the number of empty grains. Sigupai Abdya variety has a higher number of grains per panicle and sampling plot yield than Inpari 23 Bantul, and  dosage 90 kg N ha-1 increases grain yield per clump also sampling plot yield significantly. Nitrogen at 180 kg N ha-1 made Sigupai Abdya variety has high N content and absorption N in primordia phase, and the Inpari 23 Bantul variety had grain with high N content. Nitrogen at 90 kg ha-1 caused Sigupai Abdya variety at primordia phase had NUE higher than Inpari 23 Bantul. This study showed that local variety Sigupai Abdya is suitable for development as rice with low input NKeywords: Aceh aromatic, low input, nitrogen dose, N uptake, Oryza sativa L. 


2019 ◽  
Author(s):  
Baye Berihun Getahun ◽  
Molla Mekonen Kassie ◽  
Richard G. F. Visser ◽  
C. Gerard van der Linden

Euphytica ◽  
2014 ◽  
Vol 199 (1-2) ◽  
pp. 155-166 ◽  
Author(s):  
Rafael Chan-Navarrete ◽  
Asako Kawai ◽  
Oene Dolstra ◽  
Edith T. Lammerts van Bueren ◽  
C. Gerard van der Linden

2016 ◽  
Vol 155 (4) ◽  
pp. 582-598 ◽  
Author(s):  
A. RAJALA ◽  
P. PELTONEN-SAINIO ◽  
M. JALLI ◽  
L. JAUHIAINEN ◽  
A. HANNUKKALA ◽  
...  

SUMMARYThe current study aimed to evaluate breeding effect on nitrogen use efficiency (NUE), its components and some agronomic traits and disease resistance in barley by using extensive germplasm covering 72 landraces and 123 cultivars released since 1910. Trials were established in southern Finland with a modified strip-plot experimental design. Prior to sowing, blocks were placement fertilized with compound nitrogen : phosphorus : potassium (NPK) fertilizer (N-P-K: 20–3–8) at the rate of 35 and 70 kg N/ha and unfertilized plots were placed at the other end of the fertilization block. The germplasm collection was genotyped with 1536 single nucleotide polymorphism (SNP) markers and phenotyped during a 2-year field experiment in 2011/12. Independent of row type, a positive breeding effect was evident in NUE and for other plant N traits, except that grain N slightly decreased. Breeding has improved NUE by 0·08 kg/year (26% over the century). Nitrogen utilization and N uptake efficiencies were also improved by breeding as were straw length, lodging tolerance, grain yield and yield components, without any sign of levelling-off. Bred cultivars were more resistant to leaf-damaging diseases, especially to net blotch. The SNP data indicated no reduction in overall genetic diversity. However, genetic diversity differed along the barley chromosomes showing either reduced or increased diversity in certain regions when landraces were compared with modern varieties.


Crop Science ◽  
2021 ◽  
Author(s):  
Douglas Mariani Zeffa ◽  
Vânia Moda‐Cirino ◽  
Jéssica Delfini ◽  
Isabella Arruda Medeiros ◽  
Alessandra Koltun ◽  
...  

2018 ◽  
Vol 137 (6) ◽  
pp. 839-847 ◽  
Author(s):  
Vinícius Costa Almeida ◽  
José Marcelo Soriano Viana ◽  
Henrique Morais DeOliveira ◽  
Leonardo Alves Risso ◽  
Aloísio Fernando Silva Ribeiro ◽  
...  

Planta ◽  
2019 ◽  
Vol 250 (1) ◽  
pp. 41-57 ◽  
Author(s):  
Rhonda C. Meyer ◽  
Corina Gryczka ◽  
Cathleen Neitsch ◽  
Margarete Müller ◽  
Andrea Bräutigam ◽  
...  

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