BRSMG Predileta: irrigated rice cultivar for lowlands in Minas Gerais, Brazil

Soares, Plínio César; Soares, Antônio Alves; Cornélio, Vanda Maria de Oliveira; Reis, Miria Hespanhol Miranda; Morais, O. P. de; Cutrim, V. dos A.; Vieira, Antônio Rodrigues; Araújo, Renato; Baffa, David Carlos Ferreira; Costa, Joyce Maria Gomes da; Ribeiro, Rodrigo Moreira; Silva, F. L. da

doi:10.12702/1984-7033.v08n03a13

Cited by 3 publications

(3 citation statements)

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“…This cultivar is considered resistant to Fe toxicity but is not highly cultivated nowadays. The BRSMG SELETA cultivar is considered suitable for cultivation in the state of Minas Gerais (Soares et al, 2005).…”

Section: Plant Materials and Experimental Conditionsmentioning

confidence: 99%

Oxidative damage and photosynthetic impairment in tropical rice cultivars upon exposure to excess iron

Pinto

Souza

Oliva

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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Iron plays a pivotal role in the redox reactions of photosynthesis and metabolic processes such as chlorophyll synthesis. Iron availability in waterlogged soils can reach toxic levels and promote oxidative stress. Fe toxicity is the most concerning of stresses for rice in many lowland environments around the world and may cause severe impairments in rice photosynthesis. This study aimed to investigate the extension of oxidative stress after excess Fe exposure and its effects on the photosynthesis of rice cultivars with differential sensitivity. Three Brazilian rice cultivars (EPAGRI 107, BRSMG SELETA and BR IRGA 409) were grown in Hoagland nutrient solution (pH 4.0) with two Fe-EDTA doses corresponding to excess Fe (7 mM) and control (0.009 mM) treatments. After just three days of excess Fe exposure, there was a significant increase in iron concentration in the shoots. The BR IRGA 409 cultivar exhibited higher Fe accumulation in its shoots, and the EPAGRI 107 cultivar recorded the lowest values, which were below the critical toxicity level, as a resistance strategy. Impairment in light energy partitioning and oxidative damage became evident before changes in stomatal resistance, chlorophyll content, maximal PSII quantum yield or visual symptoms for the most sensitive cultivar (BR IRGA 409). The photosynthesis limitations, in addition to the impairment of excess energy dissipation in rice from iron toxicity, are the results of oxidative damage.

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Section: Plant Materials and Experimental Conditionsmentioning

confidence: 99%

Oxidative damage and photosynthetic impairment in tropical rice cultivars upon exposure to excess iron

Pinto

Souza

Oliva

et al. 2016

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

show abstract

“…Seleta has been recently released for the state of Minas Gerais (Soares et al 2005). Predileta is the other irrigated rice cultivar for lowlands in the state of Minas Gerais with excellent performance in commercial fields (Soares et al 2008). Table 3 shows the main botanical, morphological and phenological characteristics evaluated for cultivar BRSMG Rubelita.…”

Section: Pc Soares Et Almentioning

confidence: 99%

BRSMG Rubelita: irrigated rice cultivar for lowlands in the state of Minas Gerais

Soares

Cornélio

Reis

et al. 2017

Crop Breed. Appl. Biotechnol.

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“…The process of indicating rice cultivars for commercial plantations is continuous and dynamic, i.e., periodically, new cultivars are recommended instead of those that are less productive and/or with less commercial acceptance. Along this line of action, the research consortium between EPAMIG and Embrapa Rice and Beans tests several lines and cultivars of the irrigated rice breeding program every year, at different locations in Minas Gerais, in order to offer rice farmers improved options, to be able to choose suitable cultivars for their crops grown in lowlands (Soares et al 2008).…”

Section: Introductionmentioning

confidence: 99%