Screening of diverse cassava genotypes based on nitrogen uptake efficiency and yield

Liang, Kang; Liang, Qiongyue; Jiang, Qiang; Yao, Yihua; Dong, Min; He, Bing; Gu, Minghong

doi:10.1016/s2095-3119(19)62746-2

Cited by 7 publications

(5 citation statements)

References 50 publications

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“…The results obtained in each crop show what other studies have already found: Cuvaca et al ( 2017) observed an increase in root productivity with the addition of phosphate fertilizer; Silva et al (2014), Tironi et al (2015), Omondia et al (2019) and Kang et al (2020) observed variation in productivity between cassava cultivars and variation for cultivars in different crops due to meteorological differences and the chemical attributes of the soil in the study sites; and Enck et al (2017) found no difference in productivity between cassava cultivars fertilized with increasing doses of P.…”

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confidence: 86%

Agronomic performance of cassava fertilized with phosphorus doses

et al. 2023

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We have evaluated the agronomic performance of table cassava cultivars fertilized with phosphorus doses in the Brazilian Semiarid Region. Two agricultural crops were grown at the Rafael Fernandes Experimental Farm, Mossoró, RN, from June/2018 to April/2019 and from June/2019 to April/2020. The experimental design was in randomized blocks, arranged in subdivided plots, with four replications. In the plots, doses of phosphorus were applied (0, 60, 120, 180 and 240 kg P2O5 ha-1), and in the subplots, the table cassava cultivars (Água Morna, BRS Gema de Ovo, Recife and Venâncio). The following were evaluated: dry matter of leaf, stem, and commercial root; harvest index; commercial root number; commercial productivity and aerial part productivity. The cultivars used had high root and aerial part productivities indicating that their irrigated cultivation is appropriate under the conditions of the Semiarid region of Rio Grande do Norte. The cultivars Água Morna, BRS Gema de Ovo and Recife are more efficient in the use of phosphorus, obtaining high productivity even in the absence of phosphate fertilization. The cultivar Venâncio is more responsive to phosphate fertilization, as it needs an input of this nutrient to increase its productivity.

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confidence: 86%

Agronomic performance of cassava fertilized with phosphorus doses

et al. 2023

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“…However, cassava varieties respond positively to mineral fertilization, with a reported productivity greater than 30 Mg ha -1 (Munyahali et al, 2017). Nitrogen application, for example, can increase cassava production by approximately 17.03 Mg ha -1 , compared with areas without this type of fertilizer (Kang et al, 2020). Likewise, phosphorus application is extremely important to increase cassava crop yield, considering that Brazilian soils are generally deficient in this nutrient (Pereira et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Weed interference on nutrient accumulation in the leaves of cassava under no-tillage or conventional tillage

Ramella

Barbosa

Ferreira

et al. 2020

Pesq. agropec. bras.

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The objective of this work was to evaluate the effect of weed competition on the accumulation of nitrogen and phosphorus in the leaves and on the dry weight of the roots of cassava (Manihot esculenta) in the conventional and no-tillage systems, in two crop cycles. The experiments were carried out in a randomized complete block design, with split-split plots and four replicates. The plots consisted of conventional tillage or no-tillage; the split plots, of the competition or not with weeds; and the split-split plots, of the evaluation periods (0, 25, 50, 75, 100, 125, 150, 175, 200, and 225 days after planting/pruning). In the first cycle, weed competition reduced the accumulation of nitrogen in 82.6 and 81.3% and of phosphorus in 65.7 and 85.3% under conventional tillage and no-tillage, respectively. In the second cycle, the reductions in the accumulation of nitrogen were of 41.1 and 52.4% and of phosphorus of 44.1 and 52.6%, in conventional tillage and no-tillage, respectively. The root dry weight of cassava grown with weed competition showed reductions of 15.8 and 11.2% under conventional tillage and no-tillage, respectively, only in the second cycle. Weed competition reduces the accumulation of nitrogen and phosphorus in the leaves of cassava in the conventional and no-tillage systems in both crop cycles, but reduces the dry matter of cassava roots only in the second cycle.

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“…Dry matter mass of the whole plant (t ha −1 ) = dry storage root weight + dry stem weight + dry leaf weight ( Kang et al, 2020 ).…”

Section: Methodsmentioning

confidence: 99%

“…N accumulation (g plant −1 ) = N content of the organ × dry matter mass of the organ ( Kang et al, 2020 ).…”

Section: Methodsmentioning

confidence: 99%

MeNPF4.5 Improves Cassava Nitrogen Use Efficiency and Yield by Regulating Nitrogen Uptake and Allocation

Liang

Dong

et al. 2022

Front. Plant Sci.

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Improving nitrogen use efficiency (NUE) is a very important goal of crop breeding throughout the world. Cassava is an important food and energy crop in tropical and subtropical regions, and it mainly use nitrate as an N source. To evaluate the effect of the nitrate transporter gene MeNPF4.5 on the uptake and utilization of N in cassava, two MeNPF4.5 overexpression lines (MeNPF4.5 OE-22 and MeNPF4.5 OE-34) and one MeNPF4.5 RNA interference (RNAi) line (MeNPF4.5 Ri-1) were used for a tissue culture experiment, combining with a field trial. The results indicated that MeNPF4.5 is a plasma membrane transporter mainly expressed in roots. The gene is induced by NO3–. Compared with the wild type, MeNPF4.5 OE-22 exhibited improved growth, yield, and NUE under both low N and normal N levels, especially in the normal N treatment. However, the growth and N uptake of RNAi plants were significantly reduced, indicating poor N uptake and utilization capacity. In addition, photosynthesis and the activities of N metabolism-related enzymes (glutamine synthetase, glutamine oxoglutarate aminotransferase, and glutamate dehydrogenase) of leaves in overexpression lines were significantly higher than those in wild type. Interestingly, the RNAi line increased enzymatic activity but decreased photosynthesis. IAA content of roots in overexpressed lines were lower than that in wild type under low N level, but higher than that of wild type under normal N level. The RNAi line increased IAA content of roots under both N levels. The IAA content of leaves in the overexpression lines was significantly higher than that of the wild type, but showed negative effects on that of the RNAi lines. Thus, our results demonstrated that the MeNPF4.5 nitrate transporter is involved in regulating the uptake and utilization of N in cassava, which leads to the increase of N metabolizing enzyme activity and photosynthesis, along with the change of endogenous hormones, thereby improving the NUE and yield of cassava. These findings shed light that MeNPF4.5 is involved in N use efficiency use in cassava.

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Screening of diverse cassava genotypes based on nitrogen uptake efficiency and yield

Cited by 7 publications

References 50 publications

Agronomic performance of cassava fertilized with phosphorus doses

Agronomic performance of cassava fertilized with phosphorus doses

Weed interference on nutrient accumulation in the leaves of cassava under no-tillage or conventional tillage

MeNPF4.5 Improves Cassava Nitrogen Use Efficiency and Yield by Regulating Nitrogen Uptake and Allocation

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