Nodular diagnosis of contrasting recombinant inbred lines of Phaseolus vulgaris in multi-local field tests under Mediterranean climate

Lazali, Mohamed; Brahimi, Samira; Merabet, Chahinez; Latati, Mourad; Benadis, Chahinez; Maougal, Rim; Breton, Didier; Drevon, J. J.; Ounane, Sidi Mohamed

doi:10.1016/j.ejsobi.2016.02.002

Cited by 24 publications

(10 citation statements)

References 32 publications

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“…The number of nodules and the nodule dry weight are phenotypic characteristics considered as representatives for identifying quantitative trait loci (QTL) for biological N fixation (Santos et al, 2013). In some limiting conditions for plant growth, such as P deficiency, large individual nodules can compensate for the decreased number of nodules (Lazali et al, 2016), underlying the relevance of nodule weight as a parameter of evaluation. Notwithstanding, the relationship between nodule size and N 2 fixation ability stands to be clearly established on common bean.…”

Section: Resultsmentioning

confidence: 99%

“…Considering that a strong nodulation is associated with improved symbiotic N 2 ability in common bean (Graham et al, 2003;Drevon et al, 2011;Lazali et al, 2016), the extensive evaluation of a wide number of accesses allows of the use of nodulation data as a faster way to genotype selection. Additionally, differences in shoot dry weight might not have a strict adherence to N 2 symbiotic rates, particularly in weedy genotypes that can show a poor adaptation to specific growth conditions, and sensitivity to photoperiod (Araújo et al, 1998 The genotypes were allocated in nodulation classes, as follows: 148 genotypes (22%) were placed in higher classes than the reference cultivar 'Ouro Negro', for the number of nodules; 316 genotypes (46%) were higher than the reference cultivar for nodule dry weight ( Figure 1); and 225 genotypes (33%) fall above 'Ouro Negro' for one nodule dry weight.…”

Section: Resultsmentioning

confidence: 99%

“…Nodulation is the main plant trait related to the ability for high N 2 fixation in common bean (Graham et al, 2003;Lazali et al, 2016), and increased nodulation is an important and heritable component of symbiosis for selection of bean lines capable of fixing more N 2 .…”

Section: Introductionmentioning

confidence: 99%

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Variability of nodulation traits in Andean and Mesoamerican common bean gene pools

Knupp

Ferreira

Araújo

2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes of Andean and Mesoamerican gene pools present in the core collections of Embrapa, in Brazil. Evaluations were carried out in two stages: the first one with 879 genotypes, taking the cultivar 'Ouro Negro' as reference; and the second one with 116 genotypes with greater nodulation, to identify those showing stability in nodulation in the two stages. Rhizobium strains were inoculated in pre-germinated common bean seed. Plants received weekly a nutrient solution without N, and nodulation was evaluated 35 days after planting. The percentage of genotypes that exceeded the reference cultivar was 22% for number of nodules, 46% for nodule dry weight, and 33% for one nodule dry weight. The combined analysis of data from the two evaluation phases showed wide differences among genotypes, and significant interactions between genotypes and stages. By the orthogonal contrasts analysis, the Mesoamerican genotypes showed a greater nodulation than the Andean ones. In both stages, twenty-six more stable genotypes were identified, most of them belonging to the Mesoamerican gene pool. There is a large variability in nodulation traits among the common bean genotypes present in the core germplasm collections of Embrapa, which suggests that there are genotypes with improved nodulation.Index terms: Phaseolus vulgaris, biological nitrogen fixation, diversity, germplasm bank. Variabilidade das características de nodulação em feijoeirocomum dos conjuntos gênicos andino e mesoamericanoResumo -O objetivo deste trabalho foi avaliar a diversidade genotípica quanto à nodulação em genótipos de feijoeiro-comum (Phaseolus vulgaris) pertencentes aos conjuntos gênicos andino e mesoamericano presentes nas coleções nucleares da Embrapa, no Brasil. As avaliações foram realizadas em dois estágios: o primeiro com 879 genótipos, tendo-se a cultivar 'Ouro Negro' como referência; e o segundo, com 116 genótipos de maior nodulação, para identificar aqueles com estabilidade de nodulação nos dois estágios. Estirpes de Rhizobium foram inoculadas em sementes de feijão pré-germinadas. As plantas receberam, semanalmente, uma solução nutritiva isenta de N, e a nodulação foi avaliada 35 dias após o plantio. O percentual de genótipos que superaram a cultivar-referência foi de: 22%, quanto ao número de nódulos; 46%, quanto à massa de matéria seca de nódulos; e 33%, quanto à massa de matéria seca de um nódulo. A análise conjunta dos dados das duas fases de avaliação identificou amplas diferenças entre genótipos e interações significativas entre genótipos e estágios. Na análise de contrastes ortogonais, os genótipos mesoamericanos apresentaram maior nodulação do que os andinos. Foram identificados 26 genótipos mais estáveis nos dois estágios, a maioria deles pertencente ao conjunto gênico mesoamericano. Há uma ampla variabilidade em caracteres relacionados à nodulação entre os genótipos de feijoeiro presentes nas coleções nucleares da ...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Variability of nodulation traits in Andean and Mesoamerican common bean gene pools

Knupp

Ferreira

Araújo

2017

Pesq. agropec. bras.

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“…Legume intercropping help in reducing the external input of nitrogen fertilisers. Intercropped legumes enhance the availability of nutrients (nitrogen and phosphorus), crop growth and nutrient use efficiency (Latati et al 2013;Lazali et al 2016;Latati et al 2017). Intercropping of maize with legumes reduces nitrate leaching and synthetic fertilisers input and enhances agrobiodiversity, soil health and crop yield (von Cossel et al 2017).…”

Section: Intercroppingmentioning

confidence: 99%

Traditional agriculture: a climate-smart approach for sustainable food production

Singh

2017

Energ. Ecol. Environ.

224

118

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Sustainable food production is one of the major challenges of the twenty-first century in the era of global environmental problems such as climate change, increasing population and natural resource degradation including soil degradation and biodiversity loss. Climate change is among the greatest threats to agricultural systems. Green Revolution though multiplied agricultural production several folds but at the huge environmental cost including climate change. It jeopardized the ecological integrity of agroecosystems by intensive use of fossil fuels, natural resources, agrochemicals and machinery. Moreover, it threatened the age-old traditional agricultural practices. Agriculture is one of the largest sectors that sustain livelihood to maximum number of people and contribute to climate change. Therefore, a climate-smart approach to sustainable food production is the need of hour. Traditional agriculture is getting increased attention worldwide in context of sustainable food production in changing climate. The present article advocates traditional agriculture as a climate-smart approach for the sustainable food production and also deliberates the correlation between climate change and agriculture.

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“…Several nutrients are essential for plant legume growth and rhizobia specific roles in symbiotic N2 fixation (SNF) since these bacteria significantly affect nodulation and then N2 fixation process (O'Hara et al, 1988;. However, the SNF seems to be highly decreased under constraint conditions and more particularly under P-deficiency (Lazali et al, 2016), as major yield-limiting nutrients in many regions of the world (Pereira and Bliss, 1989;Camila and Lazara, 2004). Thus, low soil-P availability is a primary constraint to agricultural productivity in many low-input systems.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2016

IJAPR

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Osmotic constraints, nutrient deficiencies, especially phosphorus, and the lack of efficient strains of rhizobia in Mediterranean soils are major factors limiting symbiotic nitrogen fixation and yield in faba bean (Vicia faba L.var. minor). In order to improve faba bean plant growth and nitrogen uptake in a multi-local field test, experiments were carried out in 2012/2013 in twelve farmer's fields in different environments with the commercial cultivar Bachar of faba bean and was inoculated with a local rhizobial strain Mat.11. Nodulation, plant growth, efficiency in use of the rhizobial symbiosis, nitrogen accumulation and the effect of soil phosphorus (P) availability on plant growth analysis were measured in inoculated and non inoculated treatments. The results indicate a large spatial variation in nodulation and plant growth with the rhizobial strain inoculated under field conditions. Moreover, we noticed a correlation (r 2 = 0.45) between the rhizosphere P availability and efficiency in use of the rhizobial strain. In many sites, the inoculation with Mat.11 increased significantly not only nodule number and biomass but also the total plant nitrogen uptake comparing to without inoculation treatment. It is concluded that faba bean inoculation improve significantly nodulation and plant growth. Further investigations should address the variation SNF among local genotypes and the symbiosis mechanisms to stabilize the legume production in soils with low fertilizer input.

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Nodular diagnosis of contrasting recombinant inbred lines of Phaseolus vulgaris in multi-local field tests under Mediterranean climate

Cited by 24 publications

References 32 publications

Variability of nodulation traits in Andean and Mesoamerican common bean gene pools

Variability of nodulation traits in Andean and Mesoamerican common bean gene pools

Traditional agriculture: a climate-smart approach for sustainable food production

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