Irrigation Timing Relative to Head Development Influences Yield Components, Sugar Levels, and Glucosinolate Concentrations in Cabbage

By T. Radovich, M. Kleinhenz, J. Streeter. 2005

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To better understand the infl uence of environmental factors on components of crop productivity and nutritional and sensory quality parameters, the fresh-market cabbage (Brassica oleracea L. Capitata Group) ʻBravoʼ was irrigated at different periods relative to head development in 2002 and 2003 at the Ohio Agricultural Research and Development Center in Wooster. Irrigation was provided to plots either: 1) from planting to maturity, 2) during frame development only, or 3) during head development only. Control plants received no irrigation after plant establishment. Irrigation timing relative to crop stage signifi cantly affected all head characteristics with the greatest differences between cabbage receiving irrigation during head development and cabbage not irrigated during head development. On average, heads from cabbage irrigated during head development were heavier, larger, less pointed, and had less volume occupied by the core than heads from cabbage not irrigated during head development. A positive, linear relationship (r 2 = 0.89) was found between head volume and head weight. Across years, combined head fructose and glucose concentrations were signifi cantly greater and sucrose concentrations signifi cantly lower in cabbage receiving irrigation during head development than in cabbage not irrigated during head development. Total and individual glucosinolate levels were greater in cabbage not irrigated during head development relative to cabbage receiving irrigation during head develop- ment. Head weight, fructose and glucose were positively related to the proportion of estimated crop evapotranspiration replaced by irrigation during head development, while the opposite response was observed in head sucrose and total and indole glucosinolate concentrations.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/e20223bf74fba52f848ec5c5032dbd720b5604ff

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Citations in the corpus

• Aphids in a changing world: testing the plant stress, plant vigour and pulsed stress hypotheses (2012, background): “Drought stress can influence the glucosinolate profile in plants (Radovich et al., 2005; Khan et al., 2010) and changes in the glucosinolate profile have been shown to directly influence aphid preference and performance (Mewis et al., 2005; Kuśnierczyk et al., 2008; Newton et al., 2009).”
• Nutritional and phytochemical value of Brassica crops from the agri‐food perspective (2017, background): “In general, water stress increased the GLS accumulation in different brassicas such as watercress (Gardner, 2002), cabbage (Radovich et al., 2005), broccoli (Khan et al., 2011b; Pék et al. 2013), rapeseed (Jensen et al., 1996), turnip (Zhang et al., 2008) and Arabidopsis (Mewis et al., 2012).”