Gains from selection for oil content in cotton

Faria, Gislâyne Maira Pereira de; Oliveira, Marciane da Silva; Carvalho, Luiz Paulo de; Cruz, Cosme Damião

doi:10.1016/j.indcrop.2013.09.005

Cited by 7 publications

(6 citation statements)

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“…Yu et al (2012) detected 17 QTLs on 12 chromosomes for oil content, 22 QTLs on 12 chromosomes for protein content, and 3 QTLs on two chromosomes for gossypol content using a backcross inbred line population with a normal Euphytica glanded genotype Gl 2 Gl 2 Gl 3 Gl 3 . Most recently, Faria et al (2013) determined gain from selection for oil content in a F 5 generation to be 4.98 %.…”

Section: Introductionmentioning

confidence: 99%

Genotypic and environmental effects on cottonseed oil, nitrogen, and gossypol contents in 18 years of regional high quality tests

et al. 2015

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Determination of environmental influence on seed traits is critical for genetic improvement of seed quality in upland cotton (Gossypium hirsutum L.). The objective of this study was to analyze the relative contribution of environment and genotype (G) for seed oil, nitrogen (N), and gossypol contents using historical data from the regional high quality (RHQ) tests conducted from 1996 through 2013. The 18-year tests of RHQ were divided into six 3-year cycles with an average of about 20 genotypes and 7-10 testing locations (loc) in each cycle. Variance components of oil, N, and gossypol contents were estimated in each cycle and expressed as percentages of the total variance. Highly significant G 9 loc effects were identified for all seed quality traits in each cycle. For oil content, variance estimates of G to the total variance ranged from 20 to 57 % in different cycles. For N content, loc was the main source of variance with variance estimates of loc to the total variance ranging from 44 to 73 % in different cycles. In most cycles, loc and G were the main source of variance for free-gossypol content. For most seed quality traits, there was not a clear trend of changes among testing cycles for the variance estimates of G to the total variance. Broad-sense heritability for oil content, N content, and free-gossypol ranged from 0.79 to 0.96, 0.65 to 0.86, and 0.28 to 0.93, respectively. Highly significant G 9 loc interactions indicate that multiple location trials for testing seed quality traits are necessary. However, heritability estimates for these seed traits indicate stability across environments as well as the potential for genetic improvement. Significant reduction in seed index was observed in half of the testing cycles with a range of 10.4-9.52 within cycles. Correlation between seed index and oil content was positive with r values ranging from 0.23 to 0.77 in different cycles.

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Section: Introductionmentioning

confidence: 99%

Genotypic and environmental effects on cottonseed oil, nitrogen, and gossypol contents in 18 years of regional high quality tests

et al. 2015

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“…O teor de óleo revelou quatro grupos, variando de 23,0% a 27,0%, com uma média de 24,8%. Este resultado está dentro da faixa relatada para o algodoeiro por outros autores (GONDIM-TOMAZ et al, 1998;LUKONGE et al, 2007;QUAMPAH et al, 2012;FARIA et al, 2013).…”

Section: Resultsunclassified

“…A produção de algodão, com esse objetivo complementar à produção de fibra, vem sendo incentivada pelo governo em lavouras familiares, como uma alternativa para a geração de milhares de empregos em regiões muito pobres do País (FARIA et al, 2013).…”

Section: Introductionunclassified

“…O aumento da demanda do óleo de algodão tem motivado a realização de estudos e de trabalhos de melhoramento genético, tanto no exterior (LUKONGE et al, 2007;KHAN et al, 2010) como no Brasil (GONDIM-TOMAZ et al, 1998;CARVALHO et al, 2010;FARIA et al, 2013), visando à elevação do teor de óleo no caroço de algodão, contudo, sem considerar a sua composição em ácidos graxos. Esta é essencial e depende tanto do genótipo quanto do ambiente em que os grãos são cultivados (LUKONGE et al, 2007;DOWD et al, 2010), influenciando as características do óleo e/ou do biodiesel produzidos.…”

Section: Introductionunclassified

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Teor de óleo e composição de ácidos graxos em sementes de diferentes genótipos de algodoeiro

Gondim-Tomaz

Erismann

Cia

et al. 2016

Braz. J. Food Technol.

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. Teor de óleo e composição de ácidos graxos em sementes de diferentes genótipos de algodoeiro Oil content and fatty acid composition of cottonseeds from different genotypes ResumoO caroço de algodão, subproduto do beneficiamento da fibra, constitui importante matéria-prima para a indústria de óleos comestíveis e para a produção de biodiesel. O objetivo deste trabalho foi verificar a existência de diversidade genética para as características do óleo, em cultivares e linhagens de algodoeiro disponíveis no Brasil. O teor de óleo e sua composição em ácidos graxos foram determinados em sementes de 18 genótipos de algodoeiro, cultivadas em três localidades distintas no Brasil. A extração de óleo foi feita com hexano e os ácidos graxos foram obtidos por esterificação metílica e analisados por cromatografia gasosa. As análises de variância mostraram, tanto para o teor de óleo quanto para a composição dos ácidos graxos, diferenças significativas entre genótipos e entre locais, bem como significância para a interação genótipos x locais. Na média das três localidades, o teor de óleo variou entre genótipos de 23% a 27%. O ácido linoleico variou de 55,6% a 59%; o palmítico, de 22,7% a 24,8%; o oleico, de 13,4% a 15,8%; e o esteárico, de 1,83% a 2,14%. A faixa de diversidade genética para os ácidos graxos, embora estatisticamente significativa, não é suficientemente ampla para a realização de programas de melhoramento genético. Os genótipos FMT 523, FIBERMAX 966, IAC 06/205 e LD CV 22 destacam-se dos demais por possuir maior teor de ácidos oleico e palmítico e menor teor de ácido linoleico, o que os torna mais indicados para produção de biodiesel e uso como óleo de fritura, pela maior estabilidade oxidativa conferida por essa composição. Palavras-chave: Gossypium hirsutum; Óleo de algodão; Cultivares; Ácido oleico; Ácido linoleico. SummaryCottonseed is a by-product of the production of fibre and an important raw material for the edible oil industry and for biodiesel production. The aim of this study was to evaluate the genetic diversity of the cotton cultivars and strains available in Brazil, with respect to the oil characteristics. The oil content and fatty acid composition were determined in the seeds of 18 cotton genotypes, cultivated in three distinct localities in Brazil. The oil was extracted from the seeds using hexane, and the fatty acids analysed by gas chromatography after methylation. The analyses of variance of the results for oil content and fatty acid composition revealed highly significant differences between the genotypes and locations and for the genotypes x locations interactions. The average oil content from the three distinct localities varied from 23 to 27% amongst the genotypes. The fatty acids presented the following ranges: linoleic (55.6-59.0%); palmitic (22.7-24.8%); olei...

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“…Seed with larger size has a higher germination rate and vigor index that enables seedling grow rapidly for organogenesis (Bewley 1997). However, the yield and quality of cottonseed, which should be paid more attention to, were neglected in both cotton research and production (de Faria et al 2013;Thomas et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of mepiquat chloride on yield and main properties of cottonseed under different plant densities

et al. 2019

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Background: Cottonseed oil and protein content as well as germination traits are major indicators of seed quality. However, the responses of these indicators to plant density and mepiquat chloride (MC) are still uncertain. To investigate plant density and MC effects on cottonseed yield and main quality parameters, we conducted a twoyear field experiment including four plant densities (1.35, 2.55, 3.75 and 4.95 plants•m − 2) and two doses of MC (0 and 135 g•hm − 2) in Dafeng, Jiangsu Province, in 2013 and 2014. Results: The application of MC reduced plant height, fruit branch length and fruiting branch number under different plant densities, resulting in a lower and more compact plant canopy. Cottonseed yield showed a nonlinear increase as plant density increasing and achieved the highest value at 3.75 plants•m − 2 , regardless of MC application. No significant interactions were found between plant density and MC for cottonseed yield and quality parameters. The 100-seed weight, cottonseed oil content and vigor index significantly decreased as plant density increased, while these parameters significantly increased with MC applying under different plant densities. Seed vigor index was positively correlated with 100-seed weight and seed oil content across different plant densities and MC treatments. Conclusions: Thus, application of MC could realize a win-win situation between cottonseed yield and main quality parameters under various densities; and plant density of 3.75 plants•m − 2 combined with 135 g•hm − 2 of MC applying is optimal for high cottonseed yield and quality in this cotton production area.

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Gains from selection for oil content in cotton

Cited by 7 publications

References 7 publications

Genotypic and environmental effects on cottonseed oil, nitrogen, and gossypol contents in 18 years of regional high quality tests

Genotypic and environmental effects on cottonseed oil, nitrogen, and gossypol contents in 18 years of regional high quality tests

Teor de óleo e composição de ácidos graxos em sementes de diferentes genótipos de algodoeiro

Effects of mepiquat chloride on yield and main properties of cottonseed under different plant densities

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