Growth and yield of three sunflower hybrids cultivated for two years under Mediterranean conditions

Papatheohari, Yolanda; Travlos, Ilias; Papastylianou, Panayiota; Argyrokastritis, I.; Bilalis, Dimitrios

doi:10.9755/ejfa.2015-05-291

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…The plant emergence began on the third day and was completed within 9 days after sowing in GS1 and 10 days in GS2, within the limits reported for the crop (Rodrigues et al, 2012;Papatheohari et al, 2016). The analysis of variance revealed that percentage of emergence was influenced by cultivars and growing seasons, but with no interaction between them (Table 3).…”

Section: Plant Emergencesupporting

confidence: 74%

“…Considering these characteristics it is suggested that ornamental sunflower has conditions to be cultivated in semiarid regions because tolerates well high temperatures and light availability, since supplied with water and nutritional needs (Coutinho et al, 2015). Crop yield is influenced by genetics features of each variety and by weather conditions of the region at different seasons of the year, as well as the interaction between these factors (Aguirrezábal et al, 2003;Porto et al, 2007;Izquierdo et al, 2009;Balalić et al, 2012;Papatheohari et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Studies are necessary to investigate the agronomic performance of ornamental sunflower in order to indicate adapted cultivars and ideal sowing periods, increasing the chances for crop successfull establischment. According to Papatheohari et al (2016) this is important, especially in agricultural situations and regions where the crop is not common or widely adopted by the farmers.…”

Section: Introductionmentioning

confidence: 99%

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Growth of ornamental sunflowers in two growing seasons under semiarid conditions

2018

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Sunflower is considered a temperate zone crop but it can perform well under varying climate conditions. In this context, the aim of this study was to evaluate the growth of ornamental sunflower cultivars for cutting in two growing seasons in semiarid conditions. Sunflowers cultivars were sown in a randomized complete design in a split plot system, with four blocks. Six cultivars were evaluated (‘Bonito de outono sortido’, ‘Sol noturno’, ‘Sol vermelho’, ‘Jardim amarelo alto’, ‘Sunflower F1 sunbright supreme’ and ‘Sunflower F1 vincents choice’) in the main plots and two growing seasons in the subplots (GS1 – hot weather and GS2 – mild weather). Plant emergence percentage, plant height, stem diameter, number of leaves and internal inflorescence diameter were significant affected both by sunflowers cultivars and growing seasons. Emergence speed index and external inflorescence diameter were significantly affected by the interaction of cultivars and growing seasons. The obtained results indicated ‘Sol vermelho’ for cultivation in growing seasons with mild temperatures (GS2) and 'Sunflower F1 vincents choice' recommended for both growing seasons with mild climatic (GS2) and in warmer conditions (GS1). Although all other cultivars studied have not been indicated immediately, they may be considered for cultivation, but more studies are necessary for better acclimatization.

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Section: Plant Emergencesupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth of ornamental sunflowers in two growing seasons under semiarid conditions

2018

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“…ANOVA revealed significant effects of the treatments on grain yield (p<0.001), with the interaction of fertilization and weed control method being also significant ( grain yields being also at the same levels (Geronikolou et al, 2004;Archontoulis et al, 2007). However, each hybrid might show a different response, which is clearly associated with the genotype and the agronomical characteristics of each hybrid and has been previously reported by Papatheohari et al (2016).…”

Section: Resultssupporting

confidence: 59%

Changes of Weed Flora due to Nitrogen Addition in Sunflower

Travlos

Papastylianou

Alexos

et al. 2019

Not Bot Horti Agrobo

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A field trial was conducted in Domokos region, in central Greece with Helianthus annuus, hybrid ‘LG 5658’ in order to evaluate the effects of different N fertilization and weed control methods on sunflower yield and weed flora. ANOVA showed that the interaction of fertilization and weed control had a significant effect on grain yield. Moreover, this study revealed that the density of the common weeds Amaranthus retroflexus, Abutilon theophrasti, Xanthium strumarium and Echinochloa crus-galli was increased by 60, 40, 33 and 23% in the plots of high N rate without any herbicide use. On the contrary, weeds like Datura stramonium and Convolvulus arvensis were not significantly affected by fertilization. This different responsiveness of the several weed species could be further exploited through programs of integrated crop and weed management. Moreover, our findings related to the differences in herbicide efficacy resulting from different N levels may alter weed flora and explain possible weed control failures.

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“…Size and shape of leaf could be indicator of the degree of the cognation with other species from the genus Helianthus or on mutation genes (POVERENE et al, 2002;POVERENE and CANTTAMUTO, 2010;FAMBRINI et al, 2010). The leaf traits could indirectly affect seed yield over the LAI-leaf area index (PAPATHEOHARI et al, 2016). They were good in defining inbred lines, especially the height of the leaf top, which had the highest value of Shannon diversity index.…”

Section: Resultsmentioning

confidence: 99%

Variability of morphological traits in sunflower inbred lines

et al. 2020

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Except agronomic important traits, great diversity in sunflower is present in morphological traits which are very useful in breeding studies. The main objective of the paper was to determine genetic diversity among the 110 inbred lines in the collection of Institute of Field and Vegetable Crops Novi Sad (IFVCNS) by screening 34 morphological traits according to a list of descriptors of the International Union for the Protection of New Varieties of Plants (UPOV) as to conduct the Distinctness, Uniformity and Stability Test (DUS). The diversity of morphological traits was estimated by Shannon diversity index (H?) and the diversity of sunflower inbred lines was performed by homogeneity analysis (HOMALS) as well as discriminatory power of the traits. The values of the traits in Shannon diversity index were the highest (H?=0.99) for height of the tip of the blade compared to insertion of petiole and bract position, while branching, head shape and seed color showed low diversity (H?>0.1). The uniformity of inbred lines distribution determined discriminative power of descriptors. Disk flower anthocyanin coloration of stigma, hypocotyl anthocyanin coloration and intensity, leaf blistering, leaf serration, seed stripes on and between the margins showed the strongest discriminatory power. According to these six traits, the collection of inbred lines was divided into two main groups and three subgroups which better explained the relationships among the various inbred lines. Inbred lines showed the great variability of morphological traits in the whole collection and also among the inbred lines from the same type of use.

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Growth and yield of three sunflower hybrids cultivated for two years under Mediterranean conditions

Cited by 8 publications

References 27 publications

Growth of ornamental sunflowers in two growing seasons under semiarid conditions

Growth of ornamental sunflowers in two growing seasons under semiarid conditions

Changes of Weed Flora due to Nitrogen Addition in Sunflower

Variability of morphological traits in sunflower inbred lines

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