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Agronomy, Volume 7, Issue 4

December 2017 - 25 articles

Cover Story: Arbuscular mycorrhizal fungi (AMF) are root-colonizing fungi, widely studied for their beneficial effects on plants. AMF enhance uptake of nutrients, especially phosphate, and can have other positive effects including stress tolerance and improved resistance to pathogens. Breeding for AM interactions could therefore contribute to crop improvement. However, some studies have shown that AMF can have negative impacts on plant growth with reductions in both yield and phosphate accumulation. Also, much of our understanding of the detailed mechanisms of AM symbiosis comes from work with model plants and applying this knowledge to crop species is not straightforward. We consider the beneficial and negative impacts of AMF on plants, with particular emphasis on potential trade-offs with disease resistance. View the paper here.
Cover photomicrograph credit: Hicret Asli Yalçin.
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Articles (25)

  • Article
  • Open Access
21 Citations
5,257 Views
14 Pages

Assessing Genotype-By-Environment Interactions in Aspergillus Ear Rot and Pre-Harvest Aflatoxin Accumulation in Maize Inbred Lines

  • Sheila Okoth,
  • Lindy J. Rose,
  • Abigael Ouko,
  • Nakisani E. I. Netshifhefhe,
  • Henry Sila and
  • Altus Viljoen

20 December 2017

Aspergillus flavus, causal agent of the Aspergillus ear rot (AER) of maize, also produces aflatoxins that cause aflatoxicosis in humans and livestock. Ten maize inbred lines were evaluated in replicated trials in two aflatoxicosis outbreak hot spots...

  • Article
  • Open Access
4,624 Views
20 Pages

19 December 2017

Ascochyta blight, caused by Phoma exigua var. diversispora (Bubak) Boerema, is a serious constraint in the cultivation of the common bean (Phaseolus vulgaris L.) in Rwanda, particularly in the cool and wet highland production areas. In order to ident...

  • Review
  • Open Access
18 Citations
7,027 Views
14 Pages

18 December 2017

Recent phosphorus (P) pollution in the United States, mainly in Maine, has raised some severe concerns over the use of P fertilizer application rates in agriculture. Phosphorus is the second most limiting nutrient after nitrogen and has damaging impa...

  • Article
  • Open Access
23 Citations
5,753 Views
20 Pages

Straw Application Strategy to Optimize Nutrient Release in a Southeastern China Rice Cropland

  • Weiqi Wang,
  • Jordi Sardans,
  • Chun Wang,
  • Ting Pan,
  • Congsheng Zeng,
  • Derrick Y. F. Lai,
  • Mireia Bartrons and
  • Josep Peñuelas

15 December 2017

The management and improvement of paddy soils fertility are key factors for the future capacity of rice production. The return of rice straw to paddy soils is the best alternative to the application of industrial fertilizers for rice production susta...

  • Article
  • Open Access
36 Citations
7,699 Views
18 Pages

Comprehensive Screening of Some West and Central African Sesame Genotypes for Drought Resistance Probing by Agromorphological, Physiological, Biochemical and Seed Quality Traits

  • Komivi Dossa,
  • Louis W. Yehouessi,
  • Benoît C. Likeng-Li-Ngue,
  • Diaga Diouf,
  • Boshou Liao,
  • Xiurong Zhang,
  • Ndiaga Cissé and
  • Joseph M. Bell

11 December 2017

Sesame is an important crop in West and Central Africa playing a role of an alternative cash crop for smallholders. However, sesame productivity is highly impaired by drought. This study aimed at identifying some drought-resistant genotypes and effic...

  • Feature Paper
  • Article
  • Open Access
3 Citations
4,092 Views
7 Pages

Transferring a Biomass Enhancement Biotechnology from Glasshouse to Field: A Case Study on Wheat GWD RNAi

  • Alex P. Whan,
  • Arunas P. Verbyla,
  • Jos C. Mieog,
  • Crispin A. Howitt and
  • Jean-Philippe Ral

8 December 2017

In glasshouse studies we have previously shown that endosperm-specific RNAi suppression of the primary starch phosphorylation enzyme, Glucan, Water Dikinase (GWD) leads to enhanced early vigor, greater leaf biomass, and increases in both head size an...

  • Review
  • Open Access
93 Citations
12,946 Views
43 Pages

1 December 2017

The starch-rich endosperms of the Poaceae, which includes wild grasses and their domesticated descendents the cereals, have provided humankind and their livestock with the bulk of their daily calories since the dawn of civilization up to the present...

  • Review
  • Open Access
38 Citations
13,609 Views
16 Pages

Breeding for Quality Protein Maize (QPM) Varieties: A Review

  • Liliane N. Tandzi,
  • Charles S. Mutengwa,
  • Eddy L. M. Ngonkeu,
  • Noé Woïn and
  • Vernon Gracen

28 November 2017

The nutritional evaluation of quality protein maize (QPM) in feeding trials has proved its nutritional superiority over non-QPM varieties for human and livestock consumption. The present paper reviews some of the most recent achievements in developme...

  • Article
  • Open Access
12 Citations
6,175 Views
17 Pages

Determination of Micronutrient Accumulation in Greenhouse Cucumber Crop Using a Modeling Approach

  • Lino J. Ramírez-Pérez,
  • América Berenice Morales-Díaz,
  • Karim De Alba-Romenus,
  • Susana González-Morales,
  • Adalberto Benavides-Mendoza and
  • Antonio Juárez-Maldonado

23 November 2017

The control of micronutrient application in cucumber cultivation has great importance as they participate in many functions of metabolism. In addition, micronutrient application efficiency is fundamental to avoid periods of overconsumption or deficit...

  • Article
  • Open Access
1 Citations
6,234 Views
13 Pages

23 November 2017

Advances in enzyme stabilization and immobilization make the use of enzymes for industrial applications increasingly feasible. The lactoperoxidase (LPO) system is a naturally occurring enzyme system with known antimicrobial activity. Stabilized LPO a...

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Agronomy - ISSN 2073-4395