Sowing time and temperature influence bulb development in spring-sown onion (Allium cepa L.)

Ikeda, Hiroyasu; Kinoshita, Takafumi; Yamamoto, Takehiko; Yamasaki, Akira

doi:10.1016/j.scienta.2018.09.050

Cited by 27 publications

(21 citation statements)

References 18 publications

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“…As for the fresh bulb mass, when under the same conditions, the high temperature promoted a reduction of 53% when compared to the moderate temperature area. The total number of leaves and the pseudostem diameter were also suppressed after 25 days of transplantation when exposed to high temperature (Ikeda et al, 2019).…”

Section: Resultsmentioning

confidence: 95%

“…Besides that, when genetically improved plants have parents that are not adapted to all environmental conditions, they also result in low yield (Alves et al, 2018). Therefore, the selection of the cultivar and the sowing time appropriate to the climate of the production area, are important factors for obtaining satisfactory yields in the production of onion (Ikeda et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

“…In addition to the selection of the cultivar, the sowing time appropriate to the climate and environment of the production area are essential factors for obtaining satisfactory yields (Ikeda, Kinoshita, Yamamoto, & Yamasaki, 2019). A stable environment, with low temperature and humidity variation, absence of heavy rain, low incidence of pests and diseases, as well as the use of appropriate technologies for irrigation, fertigation, sowing and density (Santos et al, 2018), also contribute to good plant development and increased productivity in onion cultivation.…”

Section: Introductionmentioning

confidence: 99%

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Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

Iastremski

Resende

Camargo³

et al. 2021

Acta Sci. Biol. Sci.

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The use of genotypes more adapted to climatic conditions can contribute to increase the yield of onion producers. The goal of this study was to evaluate the agronomic performance of 15 onion genotypes in the soil and climatic conditions of Guarapuava, state of Paraná. The study was conducted in the experimental area of Horticulture, Cedeteg campus, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava, state of Paraná, Brazil, from July to November 2018. The experimental design used was randomized blocks, with four replications, and the treatments consisted of four commercial cultivars Optima F1, Bella Dura, Sirius F1, Soberana F1 and eleven experimental genotypes N1, N2, N3, N4, N5, N6, N7, N8, N9, AF4241 and AF4243. Biometric characteristics of the plants, production components and early flowering were evaluated. Plants presented between 6 and 9 leaves, in which N1, N3, N4 and N6 had less than 7 leaves, differing statistically from the others. The cultivar Optima F1 and the genotypes N2, N3, N5, N6, N7 and N8 presented the tallest plants, with 66.1 to 76.0 cm. The pseudostem diameter did not differ significantly between genotypes, showing values between 15.2 and 20.4 mm. Total productivity was higher in genotypes N2, N6, N5, N4, N3, N7 with values from 43.6 to 50.3 t ha-1. The highest average bulb mass was found in N2, N4, N6, Sirius F1, Optima F1 and Soberana F1, with 74.2 to 91.1 g bulb-1. Regarding the commercial classification, the genotypes N2, N4, N5, N6 and the cultivars Sirius F1 and Soberana F1 presented more than 50% bulbs of classes 3+3C+4. Early flowering did not occur in any of the analyzed genotypes. The use of cultivars with high productive performance and adapted to climatic conditions, when handled properly, can result in greater yield and quality of bulbs.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

Iastremski

Resende

Camargo³

et al. 2021

Acta Sci. Biol. Sci.

View full text Add to dashboard Cite

show abstract

“…The bulb enlargement of onion and its subsequent development were influenced by the photoperiod, and bulbing was encouraged by long days. Furthermore, in some cultivars, bulbing only occurred once double thresholds of a least thermal period of 600-degree days and a photoperiod of 13.75 h were achieved [20][21][22][23]. However, to the best of our information, the risky conditions for bulbing and the alteration in the indicator ingredient through this development inside Allium sativum have attracted limited investigation reflection, apart from the research of Kamenetsky and Rabinowitch [24], Mathew et al [7], Wu et al [16], and Atif et al [2].…”

Section: Photoperiodic Control In Bulb Enlargementmentioning

confidence: 99%

Mechanism of Allium Crops Bulb Enlargement in Response to Photoperiod: A Review

Atif

Ahanger

Amin

et al. 2020

IJMS

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The photoperiod marks a varied set of behaviors in plants, including bulbing. Bulbing is controlled by inner signals, which can be stimulated or subdued by the ecological environment. It had been broadly stated that phytohormones control the plant development, and they are considered to play a significant part in the bulb formation. The past decade has witnessed significant progress in understanding and advancement about the photoperiodic initiation of bulbing in plants. A noticeable query is to what degree the mechanisms discovered in bulb crops are also shared by other species and what other qualities are also dependent on photoperiod. The FLOWERING LOCUS T (FT) protein has a role in flowering; however, the FT genes were afterward reported to play further functions in other biological developments (e.g., bulbing). This is predominantly applicable in photoperiodic regulation, where the FT genes seem to have experienced significant development at the practical level and play a novel part in the switch of bulb formation in Alliums. The neofunctionalization of FT homologs in the photoperiodic environments detects these proteins as a new class of primary signaling mechanisms that control the growth and organogenesis in these agronomic-related species. In the present review, we report the underlying mechanisms regulating the photoperiodic-mediated bulb enlargement in Allium species. Therefore, the present review aims to systematically review the published literature on the bulbing mechanism of Allium crops in response to photoperiod. We also provide evidence showing that the bulbing transitions are controlled by phytohormones signaling and FT-like paralogues that respond to independent environmental cues (photoperiod), and we also show that an autorelay mechanism involving FT modulates the expression of the bulbing-control gene. Although a large number of studies have been conducted, several limitations and research gaps have been identified that need to be addressed in future studies.

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“…Inevitably, the precipitation regime may profoundly influence reproductive traits in perennial and annual grasses (Wang et al, 2010;Wang et al, 2018). Moreover, soil water content has been used to successfully predict seedling emergence (Ikeda et al, 2019). Spring precipitation effects on the vegetation spring phenology in arid and semi-arid regions (Shen et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Coupled influence of precipitation regimes and seedling emergence time on the reproductive strategy in Chloris virgata

Wang

Chen

Huang

et al. 2020

PeerJ

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Precipitation regime and seedling emergence time both influence plant growth and reproduction. However, little attention has been given to the effects of these combined factors on the reproductive strategy of Chloris virgata, which is a vital species in Songnen grassland. Here, we simulated the changes in the precipitation regime and seedling emergence time to evaluate tiller traits and seed production. The results showed that tiller number behaved similarly among three precipitation regimes when sowed on 15 May (T1), while it increased significantly with precipitation regimes when sowed on 15 June (T2) and 15 July (T3). Tiller number decreased significantly with the seedling emergence time under the same water supply treatment. The proportional allocation of reproductive tiller number to total tiller number was significantly higher at T3 than at T1 and T2. Seed number remained similar under different precipitation regimes at T2 and T3, whereas it was significantly lower under low precipitation than under other water levels at T1. Seed number reached the maximum values at T2 under the same level of precipitation treatment. Seed size was significantly lower under low precipitation compared to other water supply treatments and the lowest values in seed size, about 0.5 mg, occurred at T2 under all the precipitation regimes. The lowest values in spike number were under low precipitation at all seedling emergence times. Seed yield exhibited similar trends with seed size under different precipitation regimes, while the greatest gains in these values were at T1 under all the precipitation regimes. Our findings showed that simulated precipitation regimes and seedling emergence time affected the reproductive strategy of C. virgata. Typical and high precipitation, as well as early seedling emergence, will improve the seed yield and seed quality in this species.

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Sowing time and temperature influence bulb development in spring-sown onion (Allium cepa L.)

Cited by 27 publications

References 18 publications

Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

Mechanism of Allium Crops Bulb Enlargement in Response to Photoperiod: A Review

Coupled influence of precipitation regimes and seedling emergence time on the reproductive strategy in Chloris virgata

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