Genotype by environment interactions of Indian mustard (Brassica juncea L.) and canola (Brassica napus L.) in Mediterranean-type environments

Gunasekera, C.P.; Martin, Lionel; Siddique, Kadambot H. M.; Walton, G H

doi:10.1016/j.eja.2006.02.001

Cited by 66 publications

(41 citation statements)

References 9 publications

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“…At concentrations at maturity of about 20% (w/w) protein and 40% (w/w) oil Gunstone, 2001;Hay and Schwender, 2011b;Peltonen-Sainio et al, 2011), both compounds represent large fractions of total weight. Genotypespecific and environment-dependent negative correlations between percentage oil and percentage protein in rapeseed seed have been reported (Grami et al, 1977;Gunasekera et al, 2006;Peltonen-Sainio et al, 2011). Closely linked quantitative trait loci for oil and protein contents have been detected in rapeseed (Zhao et al, 2006).…”

Section: In Silico Tag/protein Tradeoff Is Relevant For Crop Improvementmentioning

confidence: 99%

Predictive Modeling of Biomass Component Tradeoffs in Brassica napus Developing Oilseeds Based on in Silico Manipulation of Storage Metabolism

Schwender

Hay

2012

Plant Physiology

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Seed oil content is a key agronomical trait, while the control of carbon allocation into different seed storage compounds is still poorly understood and hard to manipulate. Using bna572, a large-scale model of cellular metabolism in developing embryos of rapeseed (Brassica napus) oilseeds, we present an in silico approach for the analysis of carbon allocation into seed storage products. Optimal metabolic flux states were obtained by flux variability analysis based on minimization of the uptakes of substrates in the natural environment of the embryo. For a typical embryo biomass composition, flux sensitivities to changes in different storage components were derived. Upper and lower flux bounds of each reaction were categorized as oil or protein responsive. Among the most oil-responsive reactions were glycolytic reactions, while reactions related to mitochondrial ATP production were most protein responsive. To assess different biomass compositions, a tradeoff between the fractions of oil and protein was simulated. Based on flux-bound discontinuities and shadow prices along the tradeoff, three main metabolic phases with distinct pathway usage were identified. Transitions between the phases can be related to changing modes of the tricarboxylic acid cycle, reorganizing the usage of organic carbon and nitrogen sources for protein synthesis and acetylcoenzyme A for cytosol-localized fatty acid elongation. The phase close to equal oil and protein fractions included an unexpected pathway bypassing a-ketoglutarate-oxidizing steps in the tricarboxylic acid cycle. The in vivo relevance of the findings is discussed based on literature on seed storage metabolism.

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Section: In Silico Tag/protein Tradeoff Is Relevant For Crop Improvementmentioning

confidence: 99%

Predictive Modeling of Biomass Component Tradeoffs in Brassica napus Developing Oilseeds Based on in Silico Manipulation of Storage Metabolism

Schwender

Hay

2012

Plant Physiology

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“…Studies have reported that factors such as climatic conditions, soil characteristics, crop management practices, genotypic traits, and water stress, affect both oil and protein content in soybean. In general, oil content increases as protein content decreases in high-temperature growing areas (Kane et al, 1997;Piper and Boote, 1999;Noureldin et al, 2002;Ning et al, 2003;Gunasekera et al, 2006;Miladinovic et al, 2006;Rotundo and Westgate, 2009).…”

Section: Introductionmentioning

confidence: 99%

Adaptability and phenotypic stability of soybean cultivars for grain yield and oil content

Zuffo

et al. 2016

Genet. Mol. Res.

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ABSTRACT. The aim of this study was to verify the adaptability and stability of soybean cultivars with regards to yield and oil content. Data of soybean yield and oil content were used from experiments set up in six environments in the 2011/12 and 2012/13 crop seasons in the municipalities of Patos de Minas, Uberaba, Lavras, and São Gotardo, Minas Gerais, Brazil, testing 36 commercial soybean cultivars of both conventional and transgenic varieties. The Wricke method and GGE biplot analysis were used to evaluate adaptability and stability of these cultivars. Large variations were observed in grain yield in relation to the different environments studied, showing that these materials are adaptable. The cultivars exhibited significant differences in oil content. The cultivars BRSGO204 (Goiânia) and BRSMG (Garantia) exhibited the greatest average grain yield in the different environments studied, and the cultivar BRSMG 760 SRR had the greatest oil content among the cultivars evaluated. Ecovalence was adopted to identify the 2 K.B. Silva et al. ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 15 (2): gmr.15026756 most stable cultivars, and the estimates were nearly uniform both for grain yield and oil content, showing a variation of 0.07 and 0.01%, respectively. The GGE biplot was efficient at identifying cultivars with high adaptability and phenotype stability.

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“…In the control condition, highest biological yield was in 'Hyola 401' , 'RGS 003' and 'Hyola 308' , respectively. Gunasekara et al (2006) observed 17.9 and 32.1% decrease the mean biological yield and 18.5 and 38.7% in moderate and high water stresses decrease the mean seed yield during reproductive growth compared to the control. Deepak and Watal (1995) have been observed a decrease in biological yield and sac dry matter in two canola cultivars, under water deficit conditions.…”

Section: Resultsmentioning

confidence: 92%

Effects of Water Deficit Stress on Several Quantitative and Qualitative Characteristics of Canola (Brassica napus L.) Cultivars

Hosseini¹,

Hassibi²

2011

Not Sci Biol

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Water deficit stress considered as one of the most important limiting factors for oil seed canola (Brassica napus L.) growth and productivity in Iran. To evaluate the effects of water deficit stress on some qualitative and quantitative characteristics of canola cultivars, this experiment in a greenhouse trial carried out as factorial based on completely randomized design with three replications in Shahid Chamran University of Ahwaz (Iran). Canola cultivars, including 'Hyola 308' , 'Hyola 401' and 'RGS 003' as first factor, and the second one was three levels of water deficit stress, including stress at early stem elongation stage to early flowering (D 1 ), early flowering stage to early emergence of sacs (D 2 ), beginning of stem elongation stage to early emergence of sacs (D 3 ) and normal irrigation (C, as check). Results showed that the interaction between water deficit stress and cultivars affected biological yield, seed oil yields and harvest index (p≤0.01), dry matter and economic yield (p≤0.05). Water deficit stress reduced grain oil yields. 'Hyola 308' under stress at beginning stem elongation stage to early flowering had the lowest oil yields (1.1 g plants ). The decrease of oil yields at the flowering stage to stem elongation stage was more than the other stages. In addition, water deficit stress reduced harvest index in the three stress levels due to reduced economic yield and reduced biological yield. Stress susceptibility index for 'Hyola 401' at the beginning of stem elongation stage to early emergence of sacs was 0.914 and the 'Hyola 308' showed 1.12 at the beginning of stem elongation stage to early emergence of sacs respectively, which it can implies that 'Hyola 308' is more sensitive than 'Hyola 401' to water deficit stress.

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Genotype by environment interactions of Indian mustard (Brassica juncea L.) and canola (Brassica napus L.) in Mediterranean-type environments

Cited by 66 publications

References 9 publications

Predictive Modeling of Biomass Component Tradeoffs in Brassica napus Developing Oilseeds Based on in Silico Manipulation of Storage Metabolism

Predictive Modeling of Biomass Component Tradeoffs in Brassica napus Developing Oilseeds Based on in Silico Manipulation of Storage Metabolism

Adaptability and phenotypic stability of soybean cultivars for grain yield and oil content

Effects of Water Deficit Stress on Several Quantitative and Qualitative Characteristics of Canola (Brassica napus L.) Cultivars

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