Seed yield and associated trait improvements in sunflower cultivars over four decades of breeding in South Africa

Chigeza, Godfree; Mashingaidze, Kingstone; Shanahan, Paul

doi:10.1016/j.fcr.2012.01.015

Cited by 7 publications

(8 citation statements)

References 24 publications

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“…The genetic progress of sunflower for the State of Rio Grande do Sul was greater for GY than the studies found in the literature (Pereira et al, 1999;de la Vega et al, 2007;Chigeza et al, 2012). Moreover, it was also greater for OY than other studies (de la Vega et al, 2007;Chigeza et al, 2012;de la Vega, 2012). However, genetic progress for OC was below those found in other countries (de la Vega et al, 2007;Chigeza et al, 2012).…”

Section: Resultscontrasting

confidence: 56%

“…Genetic progress for OC of 0.19%/year (de la Vega et al, 2007) and 0.12%/year (Chigeza et al, 2012) was also found. Genetic progress for OY of 16.1 kg⋅ha -1 ⋅year -1 (de la Vega et al, 2007), of 12 kg⋅ha -1 ⋅year -1 (Chigeza et al, 2012), and of 6.22 to 10.54 kg⋅ha -1 ⋅year -1 (de la Vega, 2012) was found by growing regions.…”

Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 94%

“…Studies on the genetic progress for GY with sunflower were reported in Argentina, with genetic progress of 49 kg ha -1 year -1 (Pereira et al, 1999), 11.9 kg⋅ha -1 ⋅year -1 (de la Vega et al, 2007), and in South Africa with 24 kg⋅ha -1 ⋅year -1 (Chigeza et al, 2012). Genetic progress for OC of 0.19%/year (de la Vega et al, 2007) and 0.12%/year (Chigeza et al, 2012) was also found. Genetic progress for OY of 16.1 kg⋅ha -1 ⋅year -1 (de la Vega et al, 2007), of 12 kg⋅ha -1 ⋅year -1 (Chigeza et al, 2012), and of 6.22 to 10.54 kg⋅ha -1 ⋅year -1 (de la Vega, 2012) was found by growing regions.…”

Section: Resultsmentioning

confidence: 94%

“…Studies regarding the breeding program efficiency with sunflower can be found in Argentina, indicating genetic progress of grain yield (Pereira et al, 1999), grain yield, oil content, and oil yield (de la Vega et al, 2007), and oil yield (de la Vega, 2012). Also in South Africa, studies of grain yield, oil content, and oil yield (Chigeza et al, 2012). It is assumed that for the State of Rio Grande do Sul, there was genetic progress for sunflower grain yield, oil content, and oil yield during the period of 2005 to 2014.…”

Section: Introductionmentioning

confidence: 99%

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Genetic progress in sunflower crop in Rio Grande do Sul State, Brazil

Follmann¹,

Filho²,

Lorentz

et al. 2017

Genet. Mol. Res.

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The sunflower has adaptability to growing regions with different climatic and soil characteristics, showing drought tolerance and high-quality oil production. The State of Rio Grande do Sul is the third largest sunflower producer in Brazil, with research related to the sunflower breeding initiated after the decade of 1950. The aim of this study was to evaluate the genetic progress for grain yield, oil content, and oil yield of sunflower (Helianthus annuus L.) in the State of Rio Grande do Sul. Data of grain yield, oil content, and oil yield obtained from 58 sunflower cultivar yield trials in 19 municipalities in Rio Grande do Sul during the period from 2005 to 2014 were used. Genetic progress was studied according to the methodology proposed by Vencovsky and data from sunflower cultivar yield trials were used. Annual genetic progress of sunflower during the period of 10 years (2005-2014) was 132.46 kg⋅ha⋅year for grain yield, -0.17%/year for oil content, and 48.11 kg⋅ha⋅year for oil yield. The sunflower-breeding programs in the State of Rio Grande do Sul were efficient for the traits grain yield and oil yield and presented no efficiency for oil content.

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