Plant breeding at Instituto Agronômico do Paraná: IAPAR

Moda-Cirino, Vânia; Gerage, Antônio Carlos; Riede, Carlos Roberto; Sera, Gustavo Hiroshi; Takahashi, Mário; Abbud, N. S.; Nazareno, Nilceu Ricetti Xavier de; Araújo, Pedro Mário de; Auler, Pedro Martins; Yamaoka, Ruy Seigi; Sera, Tumoru; Almeida, Wilson Paes de

doi:10.1590/s1984-70332012000500004

Cited by 19 publications

(14 citation statements)

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“…For cultivar IAPAR 81, although GY was not significantly reduced under water deficit, most of the evaluated morphoagronomic traits were affected. This cultivar had been released by IAPAR in 1997 and is still in use in Brazil, due to its broad adaptation and good tolerance to heat and water deficit [24,45].…”

Section: Discussionmentioning

confidence: 99%

Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

Androcioli

Zeffa

Alves

et al. 2020

Water

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Water deficit is considered one of the most limiting factors of the common bean. Understanding the adaptation mechanisms of the crop to this stress is fundamental for the development of drought-tolerant cultivars. In this sense, the objective of this study was to analyze the influence of water deficit on physiological and morphoagronomic traits of common bean genotypes with contrasting drought tolerance, aiming to identify mechanisms associated with tolerance to water deficit. The experiment was carried out in a greenhouse, arranged in a randomized complete block 4 × 2 factorial design, consisting of four common bean genotypes under two water regimes (with and without water stress), with six replications. The morphoagronomic and physiological traits of four cultivars, two drought-tolerant (IAPAR 81 and BAT 477) and two drought-sensitive (IAC Tybatã and BRS Pontal), were measured for 0, 4, 8, and 12 days, under water deficit, initiated in the phenological stage R5. Water-deficit induced physiological changes in the plants, altering the evaluated morphoagronomic traits. The drought tolerance of cultivar BAT 477 is not only a direct result of the low influence of water deficit on its yield components, but also a consequence of the participation of multiple adaptive physiological mechanisms, such as higher intrinsic water use efficiency, net photosynthesis rate, transpiration, carboxylation efficiency, stomatal conductance, and intracellular concentration of CO2 under water deficit conditions. On the other hand, cultivar IAPAR 81 can be considered drought-tolerant for short water-deficit periods only, since after the eighth day of water deficit, the physiological activities decline drastically.

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Section: Discussionmentioning

confidence: 99%

Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

Androcioli

Zeffa

Alves

et al. 2020

Water

Self Cite

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“…The development of superior lines in terms of grain yield, plant architecture, grain-processing quality, stress resistance, wide adaptation, and yield stability is an unchanging goal in plant breeding programs (Moda Cirino et al 2012). However, the influence of the genotype -environment (GE) interaction hampers breeding, for inducing variations in genotype performance in different environments and jeopardizing selection (Cargnin et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Genotype-environment interaction in common bean cultivars with carioca grain, recommended for cultivation in Brazil in the last 40 years

Barili

Vale

Prado

et al. 2015

Crop Breed. Appl. Biotechnol.

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“…In the case of the harvested area, this increase was related to the establishment of fruit processing industries aiming at the production of juice, especially in the northern and northwestern Paraná, the favorable soil and climate conditions for citrus production, the strong organization of citrus growers in cooperatives or associations, technical assistance, support for agricultural research and defense (AULER et al, 2014), prices reached by producers in the last harvests, and the growth potential of domestic and foreign markets (TAZIMA et al, 2008). Among the factors that have contributed to the improvement of orange production and productivity, the following stood out: more intensive use of inputs such as agricultural machines, implements, fertilizers, and pesticides; an improvement in the quality of genetic material, which enabled different species and varieties to adapt to the growing environment (MODA-CIRINO et al, 2012); management improvements (LEITE JUNIOR; MOHAN;1990;VARGAS et al, 2013), with emphasis on the densification of orchards, which is one of the practices for the control of diseases such as Huanglongbing (FUKUDA et al, 2010;MOREIRA et al, 2019). The harvested area and production increases were noted in advance by rural credit financing to finance production.…”

Section: Resultsmentioning

confidence: 99%

Spatial dynamics of orange production in the state of Paraná, Brazil

2020

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The aim of this study was to identify and qualify the microregions specialized in orange production and the spatial dynamics of citrus production in the state of Paraná, Brazil. For this purpose, data from the Brazilian Institute of Geography and Statistics and the Brazilian Central Bank were used. The location quotient (LQ) methodology was applied, the principal component analysis (PCA) and the cluster analysis were carried out, and information regarding the location of industries and agribusiness cooperatives that process orange juice in the state of Paraná was collected. The LQ results, subdivided into 5-year periods, denote changes in the spatial dynamics of orange production. Between 1998Between -2002Between and 2013Between -2017, the specialized microregions increased from nine to 11; in addition, the consolidation of a citrus belt, which extended from the northwestern to the northeast area of Paraná, took place. Two main components explained 89.16% of the total data variability and four clusters were identified. The microregion of Paranavaí was the most specialized and the most important for the orange production chain in Paraná. The dynamics of orange production were spatially associated with the location of industries and agribusiness cooperatives in the sector, which were concentrated in the northwestern and mid-northern Paraná.

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Plant breeding at Instituto Agronômico do Paraná: IAPAR

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Cited by 19 publications

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Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

Genotype-environment interaction in common bean cultivars with carioca grain, recommended for cultivation in Brazil in the last 40 years

Spatial dynamics of orange production in the state of Paraná, Brazil

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