Influence of Environment on Seed Quality of Four Cotton Cultivars<sup>1</sup>

Turner, J. Harvey; Ramey, H. H.; Worley, Smith

doi:10.2135/cropsci1976.0011183x001600030023x

Cited by 29 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several authors evaluated the oil content in non-adopted genotypes and improved cultivars, finding values between 13.6 and 30.2% (Turner et al, 1976;Lukonge et al, 2007;Carvalho et al, 2008;Cavalho et al, 2010;Khan et al, 2010). Others obtained moderate to high heritability in the broad sense and reduced heritability in the narrow sense for oil content in the seed (Azhar & Ajmal, 1999;Azhar & Ahmad, 2000;Khan et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…bras., Brasília, v.52, n.7, p.530-538, jul. 2017 DOI: 10.1590/S0100-204X2017000700007 or yield characters, there are reports ranging from the absence of correlation to high correlations, with reduced repeatability of the correlations (Turner et al, 1976;Mert et al, 2005;An et al, 2010;Badigannavar, 2010). Despite the vast literature for cottonseed oil content, very little was done in terms of breeding.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selection of cotton lines for high oil content

Carvalho

Rodrigues

Farias

2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

-The objective of this work was to evaluate the oil content and characters related to fiber quality and yield in cotton lines (Gossypium hirsutum), in order to select genotypes with high oil content and acceptable levels of the other characters. Twenty-two F 6 lines and three checks were cultivated in three field trials -two in the municipality of Apodi, in the state of Rio Grande do Norte, and one in the municipality of Barbalha, in the state of Ceará, both in Brazil. The genetic parameters and the genetic gain from selecting 20% of the lines were estimated according to their means in each environment and in the group of environments. Regarding oil content, there is genetic variability, and the selection based on the overall mean is indicated, since this character showed high heritability, with 4.58% expected gain. The lines selected with this criterion have oil contents between 23.52 and 24.51%, which are higher than those of the Brazilian cultivar BRS Aroeira with the highest grain oil content (22.04%).Index terms: Gossypium hirsutum, gain from selection, genotype x environment interaction, indirect selection, seed quality. Seleção de linhagens de algodão para alto teor de óleoResumo -O objetivo deste trabalho foi avaliar o teor de óleo e os caracteres relacionados à qualidade e ao rendimento de fibra em linhagens de algodão (Gossypium hirsutum), para selecionar materiais com alto teor de óleo e níveis aceitáveis dos demais caracteres. Vinte e duas linhagens F 6 e três testemunhas foram cultivadas em três ensaios de campo -dois em Apodi, RN, e um em Barbalha, CE. Os parâmetros genéticos e o ganho com a seleção de 20% das linhagens foram estimados de acordo com suas médias em cada ambiente e no conjunto de ambientes. Quanto ao teor de óleo, há variabilidade genética, e a seleção com base na média geral é indicada, pois, esse caráter apresentou elevada herdabilidade, com ganho esperado de 4,58%. As linhagens selecionadas por este critério apresentam teores de óleo entre 23,52 e 24,51%, superiores aos da cultivar brasileira BRS Aroeira com maior teor de óleo no grão (22,04%).Termos para indexação: Gossypium hirsutum, ganho de seleção, interação genótipo x ambientes, seleção indireta, qualidade da semente.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selection of cotton lines for high oil content

Carvalho

Rodrigues

Farias

2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…The reports on environmental effects for oil content, protein content, and gossypol are scarce. According to a review by Meredith et al (2012), a few early studies analyzed G, E, and G 9 E effects on oil and protein in cottonseed (Pope and Ware 1945;Turner et al 1976). In these studies, large E effects were observed and G effect was only about 5 % for oil content.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…This reality most likely exists due to the fact that genetics accounts for more than half of the variation in many seed composition traits, with environment and environment × variety interactions accounting for less than half (Dowd et al, 2010). The few existing studies that address the environment generally involve variety trials across multiple years or locations where the location or environment component of variation had been partitioned out (Turner et al, 1976; Cherry and Leffler, 1982; and Cherry et al, 1986, and references therein). Correlations have been noted for gossypol, protein, oil, and the oil's iodine value (an indication of unsaturated fatty acids) with precipitation and temperature patterns from data recorded across several locations and years (Pons et al, 1953; Stansbury et al, 1953, 1956).…”

mentioning

confidence: 99%

Varying Planting Dates or Irrigation Regimes Alters Cottonseed Composition

Pettigrew

Dowd

2011

Crop Science

View full text Add to dashboard Cite

Despite continued utilization of cottonseed {Gossypium hirsutum L.), little information exists regarding the effect of production factors on cottonseed composition. The objective of this study was to determine how irrigation regime and planting date affect cottonseed composition. Six cotton cultivars were planted early (late April) and at a normal time (late IVlay) in a field near Stoneville, MS, from 2005 to 2008. Half of the plots were irrigated and half were cultivated dry. Seed from the 2006 through 2008 seasons were analyzed for protein, crude oil, gossypol, soluble carbohydrates, and the oil's fatty acid composition. Irrigation increased oil and total soluble carbohydrate levels by 7 and 4%, respectively, and reduced protein levels by 10%. Irrigation also increased the level of total gossypol by 21%, modestly decreased the percentage of the gossypol (+) isomer, and slightly decreased the level of saturated fatty acids in the oii. Early planting decreased gossypol in the seed kernel by 8% under dryland conditions but not under irrigated conditions. The early planting effect on the fatty acid distribution was similar to the effect observed under dryland conditions, but the differences were more modest. Early planting and irrigation offer potential for improved fiber and seed yieid but with altered seed composition. Given the proper economic incentives, producers could alter some production strategies to produce seed with more valuable composition traits.

show abstract

Influence of Environment on Seed Quality of Four Cotton Cultivars¹

Cited by 29 publications

References 0 publications

Selection of cotton lines for high oil content

Selection of cotton lines for high oil content

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

Varying Planting Dates or Irrigation Regimes Alters Cottonseed Composition

Contact Info

Product

Resources

About

Influence of Environment on Seed Quality of Four Cotton Cultivars1

Cited by 29 publications

References 0 publications

Selection of cotton lines for high oil content

Selection of cotton lines for high oil content

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

Varying Planting Dates or Irrigation Regimes Alters Cottonseed Composition

Contact Info

Product

Resources

About

Influence of Environment on Seed Quality of Four Cotton Cultivars¹