Environmental Factors Influencing the Growth of Vegetables

Rubatzky, Vincent E.; Yamaguchi, Mas

doi:10.1007/978-1-4615-6015-9_6

World Vegetables 1997

DOI: 10.1007/978-1-4615-6015-9_6

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Environmental Factors Influencing the Growth of Vegetables

Vincent E. Rubatzky

Mas Yamaguchi

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2020

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“…The fruit is composed predominantly of water (>90%), therefore water and heat stress can significantly affect fruit yield and quality (Hatfield et al, 2008). Limited soil moisture and elevated temperatures during the growing season can result in inadequate flowering, as well as inability to fend off pests and pathogens, resulting in a marked loss in yield (Krug, 1997;Rubatzky and Yamaguchi, 1997). Given the high moisture content in watermelon, it is vital to identify and develop ideotypes with improved root traits and water-use efficiency.…”

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confidence: 99%

Phenotypic Diversity for Root Traits and Identification of Superior Germplasm for Root Breeding in Watermelon

Katuuramu¹,

Wechter²,

Washington³

et al. 2020

horts

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Root traits are an important component for productive plant performance. Roots offer immediate absorptive surfaces for water and nutrient acquisition and are thus critical to crop growth and response to biotic and abiotic stresses. In addition, roots can provide the first line of defense against soilborne pathogens. Watermelon crop performance is often challenged by inclement weather and environmental factors. A resilient root system can support the watermelon crop’s performance across a diverse range of production conditions. In this study, 335 four-day-old watermelon (Citrullus spp.) seedlings were evaluated for total root length, average root diameter, total root surface area, and total root volume. Total root length varied from 8.78 to 181 cm (20.6-fold variation), total surface area varied from 2 to 35.5 cm2, and average root diameter and total root volume had an 8- and 29.5-fold variation, respectively. Genotypes PI 195927 (Citrullus colocynthis) and PI 674448 (Citrullus amarus) had the largest total root length values. Accessions PI 674448 and PI 494817 (C. amarus) had the largest total root surface area means. Watermelon cultivars (Citrullus lanatus) had a relatively smaller root system and significantly fewer fibrous roots when compared with the roots of the other Citrullus spp. Positive genetic correlations were identified among total root length, total root surface area, and total root volume. This genetic information will be useful in future breeding efforts to select for multiple root architecture traits in watermelon. Germplasm identified in this study that exhibit superior root traits can be used as parental choices to improve watermelon for root traits.

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mentioning

confidence: 99%

Phenotypic Diversity for Root Traits and Identification of Superior Germplasm for Root Breeding in Watermelon

Katuuramu¹,

Wechter²,

Washington³

et al. 2020

horts

View full text Add to dashboard Cite

show abstract

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Environmental Factors Influencing the Growth of Vegetables

Cited by 1 publication

References 5 publications

Phenotypic Diversity for Root Traits and Identification of Superior Germplasm for Root Breeding in Watermelon

Phenotypic Diversity for Root Traits and Identification of Superior Germplasm for Root Breeding in Watermelon

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