Effect of Irrigation and Soil Management Practices on Fruit Production and Quality in Chestnut Orchards of Northern Portugal

Linhares, I.; Martins, Amanda Posselt; Borges, O.; Guedes, C. F.; Sousa, Vinícius Silva

doi:10.17660/actahortic.2005.693.94

Cited by 3 publications

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“…However, there are many more published research papers on the chemical composition of traditional sweet chestnut varieties. According to those studies, the chemical composition of chestnuts varies by genotype [6,8,10,89,90], ecotype [34,59], soil and climatic conditions [7,9,11], altitude [91], area of production [9] and production practices [92,93]. Given that the samples in this study were collected under the same climatic and soil conditions, the differences in the proximate composition (moisture, crude protein, crude fat, ash and total carbohydrates) and macro-and micro-nutrients can be interpreted as a result of genetic differences between the studied varieties.…”

Section: Resultsmentioning

confidence: 99%

Traditional Sweet Chestnut and Hybrid Varieties: Chemical Composition, Morphometric and Qualitative Nut Characteristics

et al. 2021

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The chemical composition, morphometric and qualitative nut characteristics were studied in four traditional sweet chestnut and hybrid varieties produced on private estates in the Lovran surroundings, on the eastern slopes of Mount Učka, under the specific conditions of the sub-Mediterranean climate. Seven morphological characteristics were measured, and 12 nut and kernel qualitative characteristics were estimated using standardized descriptors. In addition, the samples were analyzed for proximate constituents (moisture, crude fat, crude protein, ash and total carbohydrates) and macro- and micro-nutrients (K, Mg, Ca, Na, Mn, Fe, Zn and Cu). Significant differences between traditional sweet chestnut and hybrid varieties were found in almost all of the studied morphometric and chemical nut characteristics. In general, chestnuts of hybrid varieties were characterized by larger fruits with higher moisture, crude protein, potassium, magnesium, sodium, iron and copper contents than in traditional sweet chestnut varieties. On the other hand, nuts of traditional sweet chestnut varieties were richer in total carbohydrates and crude fat. In addition, the presence of raised stripes, a small hilar scar and transversally ellipsoid nut shape were found to be typical for the traditional sweet chestnut varieties. Overall, our results suggest that the traditional varieties of the sweet chestnut can be easily differentiated from the new modern hybrid varieties by both morphological and chemical characteristics of the nut, and because of these differences, these two groups of chestnut varieties can have different practical uses.

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Section: Resultsmentioning

confidence: 99%

Traditional Sweet Chestnut and Hybrid Varieties: Chemical Composition, Morphometric and Qualitative Nut Characteristics

et al. 2021

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“…The majority of the essential fine feeder roots are within about 0.6 to 1.0 m of the surface. Cultivation, mulching, herbicides, and mowing are used in various combinations to make sure young trees get the advantages they need to stay strong (Vossen 2000, Linhares et al, 2005. As trees mature and reach bearing age, a clean, hard packed surface from the trunk to the drip line of the tree is essential for fruit harvest.…”

Section: Weed Control and Orchard Floor Managementmentioning

confidence: 99%

Evaluation and propagation of selected genetic stock of castanea sativa (MILL.)

Tchatchoua¹

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Thanks to the Almighty God for His guidance, protection and provisions during the course of this study. I wish to express my unreserved appreciation to my supervisor, Professor F. A. Aravanopoulos, for his suggestion on the topic of my interest, constructive criticism, patience and careful supervision of this work. My sincere gratitude goes to the members of my supervising committee, Professor F. A.Aravanopoulos, Professor A. Scaltsoyiannes and Professor E. Barbas for all their assistance during the laboratory work and write-up. I am also very grateful to Prof.Stamatelos, to the lecturer Dr. P. Alizoti for contributing to my knowledge in forest genetics, tree breeding and statistics that l have acquired during the period, as well as the entire staff of the Laboratory of Forest Genetics and Tree Improvement. I also express my sincere thanks to the members of the examining committee, namely

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Morphological and Chemical Variation of Wild Sweet Chestnut (Castanea sativa Mill.) Populations

Poljak

Vahčić

Liber

et al. 2022

Forests

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Sweet chestnut (Castanea sativa Mill., Fagaceae) is one of the oldest cultivated tree species in the Mediterranean, providing multiple benefits, and, since it has edible seeds, it represents an interesting model species for the research of morphological and chemical variability. In this study, morphometric methods and chemical analyses were used to quantify the extent of differences in phenotypic and nutritional traits between eight natural populations of sweet chestnut from different environmental conditions, where different management types are applied, high-forest and coppice. The samples were collected from the Prealps in Italy to the western part of Bosnia and Herzegovina. In total, 31 nut and kernel morphometric and nutritional traits were studied on 160 trees, and various multivariate statistical analyses were used to study intra- and interpopulation variations. Both analyses, morphometric and chemical, revealed a similar pattern of diversity, with morphological and chemical variability not associated with geographic or environmental variables. In addition, we found significant correlations between morphometric and chemical data. High phenotypic variability was determined both among and within the studied populations, and all populations had a similar level of diversity. The results of the analysis of morphological and chemical diversity can have many practical applications for the management, production, and conservation of the sweet chestnut genetic resources for nut production.

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Effect of Irrigation and Soil Management Practices on Fruit Production and Quality in Chestnut Orchards of Northern Portugal

Cited by 3 publications

References 0 publications

Traditional Sweet Chestnut and Hybrid Varieties: Chemical Composition, Morphometric and Qualitative Nut Characteristics

Traditional Sweet Chestnut and Hybrid Varieties: Chemical Composition, Morphometric and Qualitative Nut Characteristics

Evaluation and propagation of selected genetic stock of castanea sativa (MILL.)

Morphological and Chemical Variation of Wild Sweet Chestnut (Castanea sativa Mill.) Populations

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