Combining Ability of Potato Genotypes for Cool and Warm Seasons in Brazil

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

doi:10.13082/1984-7033.v01n02a06

Cited by 31 publications

(36 citation statements)

References 11 publications

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“…Only at Lavras (Mar/08) was the mean value below the other environments, with specific gravity of 1.0652. A similar result was observed by Menezes et al (2001), in the rainy crop season at Lavras (1994/95). This occurs due to the more frequent occurrence of high temperatures during the crop cycle, affecting a range of aspects from formation of stolons to translocation of photoassimilates to the tubers.…”

Section: Resultssupporting

confidence: 85%

“…Ninety-one clones previously identified as heat tolerant by Menezes et al (2001) and Benites & Pinto (2011) were evaluated, denominated CBM, SR1 and SR2. 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%

“…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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Section: Resultssupporting

confidence: 85%

Section: Methodsmentioning

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

Self Cite

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“…The clones LT and DTO were released by the International Potato Centre, Peru (CIP) as heat-tolerant and Desirée is a Dutch cultivar. These 10 genotypes were crossed, resulting in the CBM population selected for heat tolerance and high tuber dry matter (Menezes et al 2001). The CBM population was considered the first cycle of recurrent selection, of which 13 clones were used, together with the control cultivars Atlantic and Chiquita to generate the population of the second selection cycle, called RS1.…”

Section: Methodsmentioning

confidence: 99%

Genetic gains for heat tolerance in potato in three cycles of recurrent selection

Benites¹,

Pinto

2011

Crop Breed. Appl. Biotechnol.

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“…Each progeny had known sources of heat tolerance, which were selected from studies by Menezes et al (2001) and Lambert and Pinto (2002) (Table 1).…”

Section: Methodsmentioning

confidence: 99%