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Environmental and genetic effects on yield and secondary metabolite production in Brassica rapa crops

AuthorsFrancisco Candeira, Marta ; Cartea González, María Elena ; Butrón Gómez, Ana María ; Sotelo Pérez, Tamara ; Velasco Pazos, Pablo
KeywordsBrassica rapa
Environmental covariates
Factorial regression
Ggenotypic covariates
Secondary metabolites
Issue Date2012
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 60(22): 5507-5514 (2012)
AbstractTwelve Brassica rapa varieties grown, such as turnip green and turnip top, were evaluated in seven environments to determine the environmental and genotypic variables that have an influence on crop production and on the content of glucosinolates and phenolic compounds. Factorial regression analysis showed that, in general, crop production was favored by high temperatures all along the crop cycle. However, the lack of a period of intense cold could be a limiting factor. The metabolite content seems to be regulated by extreme temperatures (daily maximum and minimum temperatures) rather than by average daily temperatures. With regard to genotypic covariables, turnip top production was significantly affected by traits related to the vegetative development and time to flowering. Meanwhile, turnip green production was largely affected by a sinapoyl derivative compound, which is a precursor of cell wall components. Cross-talk between glucosinolate biosynthesis and phenylpropanoid signaling pathways is suggested.
Publisher version (URL)http://dx.doi.org/10.1021/jf301070q
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