Biofortification of taro (Colocasia esculenta) through breeding for increased contents in carotenoids and anthocyanins

Taro (Colocasia esculenta) is the tropical root crop species featuring the greatest flavonoids diversity. Their quantification is important for breeding programmes focusing on biofortification. This study aims at developing an HPTLC protocol to compare the flavonoids fingerprints of more than 1800 hybrids belonging to 24 full-sib families and to select genotypes with high levels of antioxidants. Twenty different chemical markers were identified based on bands R f and colour. Flavonoids differ among individuals both quantitatively and qualitatively. Marker 'A' yielded the strongest antioxidant response to DPPH, equivalent to the one with quercetin pure standard. Overall, 377 high flavonoids content (HFC) hybrids were selected from 14 different families. The mean corm weight of HFC hybrids always appeared higher than the mean corm weight of the family they belong to. This method allows unambiguous selection of HFC hybrids. It also contributes to taro genetic improvement for nutritional value and access to new markets and to strengthen corm tolerance to pests and diseases. It could be applied to other tropical root crop species.

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“…This confirms that chromameters or visual tools will be misleading when screening taro hybrids for high flavonoids content (Champagne et al. ).…”

Section: Discussionsupporting

confidence: 71%

“…It is possible to improve taro total carotenoids content through a simple breeding process, but enhancing flavonoids content is much more complex as visual assessment, and chromameters may be biased by the existence of orange and red pigments gradients in corm flesh or colour co‐suppression effects (Champagne et al. ).…”

mentioning

confidence: 99%

HPTLC screening of taro hybrids (Colocasia esculenta (L.) Schott) with high flavonoids and antioxidants contents

Lebot

Legendre

2014

Plant Breeding

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“…Anthocyanins and carotenoids are the main compounds responsible for the colors of taro rhizomes, which can be white, yellow, green, pink, red, light purple, and dark purple. The variety of carotenoids includes phytopigments such as lutein, zeaxanthin, phytoene, and carotene (Champagne et al, 2013).…”

Section: Bioactive Compoundsmentioning

confidence: 99%

Taro [Colocasia esculenta (L.) Schott]: a critical review of its nutritional value and potential for food application

BRANDÃO,

TAGLIAPIETRA,

CLERICI

2023

Food Sci. Technol (Campinas)

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Taro [Colocasia esculenta (L.) Schott] is an important food source worldwide, as it contains several macro- and micronutrients, standing out as a source of polysaccharides such as starch, mucilage, minerals, and bioactive compounds, including flavonoids. However, taro also contains antinutrients, such as oxalates, which impede its consumption in the fresh form. This critical review addresses the main studies on the physicochemical and nutritional composition of the tuber in fresh, cooked, or flour form, in addition to various food applications, aiming to improve the scientific and industrial visibility of this tuber.

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“…The nutrient content and nutritional quality of the taro corm have been adopted as the target indexes for plant cultivation and breeding strategies (Mergedus et al, 2015;Suja et al, 2017). Many studies have investigated the nutritive quality of taro corms (Banjaw, 2017;Champagne et al, 2013;Kaushal et al, 2015). Compared with other tuber crops, taro corms have higher nutritive and medical value (Kundu et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Influences of water management combined with organic mulching on taro plant growth and corm nutrition

Juang

Lin

ChinJin

2020

Plant Production Science

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Taro (Colocasia esculenta L. Schott) is an important food staple in developing countries in Africa, West Indies, the Pacific region, and Southeast Asia. Because taro can be grown in almost all tropical regions of the world, it will play a crucial role in food security. The use of organic mulches, which contribute to soil water management, weed control, and fertilization simultaneously, shows promise as an eco-friendly approach in agronomy. In the present study, a field experiment including two cropping seasons (I and II) was conducted to evaluate the effects of water regimes with organic mulching on the taro growth and corm nutritive values. In results, compared with that under the upland regime, taro cultivation under the flooding regime had a higher level of soil fertility and better weed control. The flooding regime promoted more the taro plant growth and further enhanced the yields of the harvested corms; also, sugarcane bagasse and rice husk would be the superior mulch to obtain better corm attributes. By contrast, cultivation under the upland regime enhanced the nutritive values of taro corm more than did that under the flooding regime. Regardless of the upland or flooded regime, mulching treatments with rice husk could enrich taro corm nutrition more than could those with sugarcane bagasse and peanut hull. Also, the effects of water regime and mulching on taro plant growth and corm attributes would be varied with the rainfalls during the period of vegetative growth.

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Biofortification of taro (Colocasia esculenta) through breeding for increased contents in carotenoids and anthocyanins

Cited by 16 publications

References 28 publications

HPTLC screening of taro hybrids (Colocasia esculenta (L.) Schott) with high flavonoids and antioxidants contents

HPTLC screening of taro hybrids (Colocasia esculenta (L.) Schott) with high flavonoids and antioxidants contents

Taro [Colocasia esculenta (L.) Schott]: a critical review of its nutritional value and potential for food application

Influences of water management combined with organic mulching on taro plant growth and corm nutrition

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