Potato improvement for tropical conditions: I. Analysis of stability

Lambert, Eduardo de Souza; Pinto, César Augusto Brasil Pereira; Menezes, C. B. de

doi:10.12702/1984-7033.v06n02a03

Cited by 18 publications

(31 citation statements)

References 13 publications

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“…This high value observed was also found by Menezes et al (2001) and Lambert et al (2006) in which they discuss the difficulty of evaluation for this characteristic.…”

Section: Resultssupporting

confidence: 76%

“…The interesting point is that the best clones were the most productive, both in the environments with mild temperatures as well as under high temperatures, showing that it is possible to select clones which are adapted to stressful environments caused by high temperatures and, at the same time, responsive to environments with mild temperatures. Lambert et al (2006) identified that for high temperature conditions, in general, the genotypes with best performance are specifically adapted; however, genotypes with good performance in both conditions may also be selected. The best clones exhibited yields greater than overall mean in most of the environments (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

“…In addition to heat tolerance, these clones showed better agronomic performance, combining high dry matter content of the tubers and percentage of large tubers (Lambert et al, 2006).…”

Section: Methodsmentioning

confidence: 99%

“…Lambert et al (2006) observed that growing under high temperatures reduces the number and weight of the tubers, resulting in decreases of up to 58% in yield and 25% in percentage of large tubers. Under stress conditions, various processes that affect tuber yield are inhibited, such as the photosynthetic rate, induction of tuberization and tuber development (Veilleux et al, 1997;Hall, 2003;Wahid et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…However, in Brazil, which is a predominantly tropical country, selection for this trait began only recently (Menezes et al, 2001;Lambert et al, 2006;Benites & Pinto, 2011). Through intense debates among breeders discussing "what to breed for" in the potato crop, they cite resistance to abiotic stresses, more specifically heat tolerance, as one of the main goals in genetic breeding (Bonnel, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of potato clones for heat tolerance in the southern region of Minas Gerais, Brazil

Teixeira

Pinto

Lepre

et al. 2015

Agraria

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The purpose of this study was to evaluate potato clones previously selected for heat tolerance as to choose the most adapted and stable ones for use as parent varieties in future breeding programs or as new cultivars for the market. Ninety-one clones and eight controls were evaluated, among them three cultivars widely planted in the state of Minas Gerais and three cultivars considered to be heat tolerant. Six trials were carried out in different growing seasons in the southern region of Minas Gerais State (Brazil), in both mild and high temperatures. It was possible to identify genotypes which are highly stable when subjected to high temperatures and responsive under mild temperature conditions, especially the clones CBM 7-78 and SR2 50-04. The rank summation index allowed the greatest genetic gain for all traits together. The clones SR2 35-05 and CBM 4-48 have ideal traits for the fresh market. Clone SR2 53-02 has long shaped tubers and high tuber specific gravity, ideal traits for the frozen pre-fried products industry. For the chip industry, the clones CBM 7-12 and CBM 7-78 are most recommended, due to their rounded shape and high dry matter content. Key words:Heat stress, Solanum tuberosum L., stability Avaliação de clones de batata tolerantes ao calor na região sul de Minas Gerais RESUMOO objetivo do estudo foi avaliar um grupo de genótipos previamente identificados como tolerantes ao calor, a fim de selecionar aqueles mais adaptados e estáveis para que sejam utilizados como genitores em programas de melhoramento ou como novas cultivares para o mercado. Foram avaliados 91 clones e 8 testemunhas, dentre estas, três cultivares amplamente utilizadas pelos produtores e três consideradas tolerantes ao calor. Conduziu-se seis ensaios em diferentes épocas na região sul de Minas Gerais, sendo alguns sob condições de temperaturas amenas e outros sob altas temperaturas. Foi possível identificar genótipos altamente estáveis quando submetidos à temperaturas elevadas e responsivos em condições de temperaturas amenas, com destaque para os clones CBM 7-78 e SR2 50-04. A seleção pelo índice da soma de postos foi a que proporcionou o maior ganho, quando considerados todos os caracteres em conjunto. Os clones SR2 35-05 e CBM 4-48 possuem características ideais para o mercado in natura. Já o clone SR2 53-02 possui formato alongado e alto peso específico, características ideais para a indústria de pré-fritas. Para a indústria de chips, os clones CBM 7-12 e CBM 7-78 são os mais indicados, com formato arredondado e alto teor de matéria seca. Palavras-chave:Temperaturas elevadas, Solanum tuberosum L., estabilidade

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“…This high value observed was also found by Menezes et al (2001) and Lambert et al (2006) in which they discuss the difficulty of evaluation for this characteristic.…”

Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

“…In addition to heat tolerance, these clones showed better agronomic performance, combining high dry matter content of the tubers and percentage of large tubers (Lambert et al, 2006).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of potato clones for heat tolerance in the southern region of Minas Gerais, Brazil

Teixeira

Pinto

Lepre

et al. 2015

Agraria

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Performance of superior potato clones under high and mild temperatures in tropical climate

Patiño-Torres¹,

Andrade

Guedes

et al. 2021

Agronomy Journal

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Potato (Solanum tuberosum L.) is a cool weather crop and one of the most important vegetables in the world, which is cultivated in temperate, subtropical, and tropical climates. Nearly all cultivated areas in Brazil use cultivars from temperate countries, resulting in lower performances particularly due to higher temperatures. The aim of this study was to identify clones that yielded better than foreign cultivars, both under high and mild temperature conditions. The study assessed 57 clones from the potato breeding program of the Universidade Federal de Lavras (UFLA), Brazil, and five check cultivars (Agata, Asterix, Atlantic, Cupido, and Markies). We evaluated the agronomic performance using the total and marketable tuber yield, dry matter content (DM), season length, and external tuber quality, in four experiments designing in a random complete block, during the seasons 2014 and 2015. The genotypes' stability, as well as the discrimination between environments, was performed using the GGE-Biplot method. Twenty heat-tolerant clones responded favorably to mild temperatures. This breeding program has generated clones more productive and better looking than commercial cultivars, for the different market segments: two for the fresh market (GMR 17-40; GMR 12-10), four for frozen French fries (CBM 07-78; CTB 03-02; GMR 15-42; SR2 35-05) and seven for potato chips

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Selection of potato clones for heat tolerance and resistance to potato viruses X and Y for processing purposes

et al. 2020

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Potato (Solanum tuberosum L.) is one of the most important crops for human consumption worldwide, representing an essential component for the food security of several countries. However, yield and quality are negatively affected by biotic and abiotic stresses. In this sense, the selection of potato cultivars tolerant to heat and resistant to diseases is of great importance. Our goal was to select clones suitable for the chips industry, having heat tolerance and bearing the Rx1 and Ryadg alleles, which confer resistance to Potato virus X and Potato virus Y. We evaluated 491 clones originating from 31 biparental crosses under three different seasons in terms of heat stress (without heat stress [WHS], moderate heat stress [MHS], and high heat stress [HHS]). The evaluated traits were specific gravity (SG), dry matter yield (DMY), and proportion of physiological disorders (PD). After evaluation in the WHS and MHS seasons, the presence of the Rx1 and Ryadg alleles was investigated with the help of molecular markers in the 68 clones showing the best performance, which descended from the DGN2103 and DGN4002 parental clones. To gather the genotypic values for all traits in each season, the clones were ranked according to an index based on the genotype–ideotype distance. On average of all seasons, the top 10% selected clones by the index were 9 and 0.1% higher than the Atlantic cultivar for the traits DMY and SG, respectively, and 80% lower than Atlantic cultivar for PD. In conclusion, we report the selection of potato clones suitable for industrial processing.

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Potato improvement for tropical conditions: I. Analysis of stability

Cited by 18 publications

References 13 publications

Evaluation of potato clones for heat tolerance in the southern region of Minas Gerais, Brazil

Evaluation of potato clones for heat tolerance in the southern region of Minas Gerais, Brazil

Performance of superior potato clones under high and mild temperatures in tropical climate

Selection of potato clones for heat tolerance and resistance to potato viruses X and Y for processing purposes

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