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Evers, Aino-Maija; Tuuri, Hannu; Hägg, Margareta; Plaami, Sirkka; Häkkinen, Ulla; Talvitie, Heikki

doi:10.1023/a:1007955818503

Cited by 11 publications

(2 citation statements)

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“…Possibly, it is determined by many genes with small individual effects and markedly modified by the environment. The impact of environmental factors, e.g., planting density [ 2 ], water regime [ 3 ], soil forming [ 4 ], temperature [ 5 ], and nutrient availability [ 6 ] on carrot root growth have been described. It was also reported that heterosis resulted in increased carrot storage root biomass and improved its quality [ 7 ] and a strong linear relationship between shoot and root biomass was shown [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Mining for Candidate Genes Controlling Secondary Growth of the Carrot Storage Root

Macko-Podgórni

Stelmach

Kwolek

et al. 2020

IJMS

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Background: Diverse groups of carrot cultivars have been developed to meet consumer demands and industry needs. Varietal groups of the cultivated carrot are defined based on the shape of roots. However, little is known about the genetic basis of root shape determination. Methods: Here, we used 307 carrot plants from 103 open-pollinated cultivars for a genome wide association study to identify genomic regions associated with the storage root morphology. Results: A 180 kb-long region on carrot chromosome 1 explained 10% of the total observed phenotypic variance in the shoulder diameter. Within that region, DcDCAF1 and DcBTAF1 genes were proposed as candidates controlling secondary growth of the carrot storage root. Their expression profiles differed between the cultivated and the wild carrots, likely indicating that their elevated expression was required for the development of edible roots. They also showed higher expression at the secondary root growth stage in cultivars producing thick roots, as compared to those developing thin roots. Conclusions: We provided evidence for a likely involvement of DcDCAF1 and/or DcBTAF1 in the development of the carrot storage root and developed a genotyping assay facilitating the identification of variants in the region on carrot chromosome 1 associated with secondary growth of the carrot root.

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Section: Introductionmentioning

confidence: 99%

Mining for Candidate Genes Controlling Secondary Growth of the Carrot Storage Root

Macko-Podgórni

Stelmach

Kwolek

et al. 2020

IJMS

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“…According to their study, there was no significant difference between root lengths due to the water applications. Unfortunately, carrots cultivated on ridges produced significantly longer roots compared to cultivate on flat ground [36,37]. This may be because of the possibility of the root to obtain the required amount of water for the uptake and solubility of soil nutrients.…”

Section: Effect Of Different Supplementary Irrigation On Thementioning

confidence: 99%

Response of Carrot (Daucus carota L.) to Supplementary Irrigation under Rain‐Fed Agriculture at Jimma and Gera, Jimma Zone, South West Ethiopia

Ashine,

Tadesse Bedane,

Asefa Mengesha

2024

Advances in Agriculture

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Evaluating supplementary irrigation under rain-fed agriculture could help to determine the amount of water depth for water management and increasing productivity. Thus, this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production. Eight treatments with three replications on a field plot of 9 m2 were used for conducting the experiment. Crop water requirement (ETc) was calculated from reference evapotranspiration (ETo) and crop coefficient (Kc) using CropWat 8.0 software. Yield and yield component data were collected from the field and analyzed using the statistical analysis system (SAS) software 9.0. The result revealed that root shoulder diameter, fresh biomass, and fresh root weight had significant (p <0.05) effects between the treatments, but there was no significant difference (p >0.05) between treatments on plant height and carrot root length at both locations. The highest and lowest plant heights were recorded at 75% SI and at a rain-fed treatment. A root shoulder diameters of 38.37 and 37.86 mm were recorded at Jimma and Gera, respectively, from the application of 75% and two SI at flowering and fruit setting treatment. The application of 75% SI gave the highest root length. A maximum fresh biomass of 3,038.6 kg/ha was obtained at 75% SI, and a minimum fresh biomass of 1,640.00 kg/ha was recorded from the rain-fed treatment at JARC. Application of 75% SI gave the maximum fresh biomass (2,388.9 kg/ha) at Gera, and a minimum fresh biomass of 1,277.8 kg/ha was recorded from rain fed. An application of 75% SI gave the highest fresh root weight of 7,430.6 kg/ha at JARC. In the study, the application of 75% SI gave the highest (6,388.9 kg/ha) fresh root weight, and the lowest was recorded at rain fed (3,883.3 kg/ha). Therefore, for optimum production, 75% SI was recommended for the production of carrots. The total net benefit from the production of carrots was in the range of 36,659–46,950 ETB per hectare at Jimma and from 24,828 up to 39,399 ETB per hectar at Gera. The maximum and minimum marginal return rate (MRR) at Jimma were 300.97%, which is at 75% SI and 43.69%, which is at 25% supplementary irrigation, respectively. At Gera, the maximum and minimum MRR were 490.95%, which were at 25% supplementary irrigation, and the minimum was 23.18%, which was at full supplementary irrigation. Therefore, to get an economic benefit, supplementing carrot crop at 75% irrigation was recommended for both Gera and JARC.

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Quality of carrots as affected by pre‐ and postharvest factors and processing

et al. 2013

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The aim of this review is to provide an update on factors contributing to quality of carrots, with special focus on the role of pre-and postharvest factors and processing. The genetic factor shows the highest impact on quality variables in carrots, causing a 7-11-fold difference between varieties in content of terpenes, β-carotene, magnesium, iron and phenolics as well as a 1-4-fold difference in falcarindiol, bitter taste and sweet taste. Climate-related factors may cause a difference of up to 20-fold for terpenes, 82% for total sugars and 30-40% for β-carotene, sweet taste and bitter taste. Organic farming in comparison with conventional farming has shown 70% higher levels for magnesium and 10% for iron. Low nitrogen fertilisation level may cause up to 100% increase in terpene content, minor increase in dry matter (+4 to +6%) and magnesium (+8%) and reduction in β-carotene content (−8 to −11%). Retail storage at room temperature causes the highest reduction in β-carotene (−70%) and ascorbic acid (−70%). Heat processing by boiling reduces shear force (−300 to −1000%) and crispiness (−67%) as well as content of phenolics (−150%), terpenes (−85%) and total carotenes (−20%) and increases the risk of furan accumulation. Sensory and chemical quality parameters of carrots are determined mainly by genetic and climate-related factors and to a minor extent by cultivation method. Retail temperature and storage atmosphere as well as heating procedure in processing have the highest impact in quality reduction.

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Untitled

Cited by 11 publications

References 1 publication

Mining for Candidate Genes Controlling Secondary Growth of the Carrot Storage Root

Mining for Candidate Genes Controlling Secondary Growth of the Carrot Storage Root

Response of Carrot (Daucus carota L.) to Supplementary Irrigation under Rain‐Fed Agriculture at Jimma and Gera, Jimma Zone, South West Ethiopia

Quality of carrots as affected by pre‐ and postharvest factors and processing

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