Shortening vernalization of winter wheat with kinetin

Barabás, Z.; Csepely, I. T.

doi:10.1007/bf00023721

Cited by 9 publications

(6 citation statements)

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“…With no significant difference in flowering time for GA3, the concentration of 100 mg/L was determined by the highest label rate of the product for commercial use, and previous studies ( Boden et al, 2014 ). The same selection criteria were used for the concentration of 6-BA (100 mg/L) which was again a combination of high label rate and previous studies ( Barabas and Csepely, 1978 ).…”

Section: Resultsmentioning

confidence: 99%

“…In cereals, PGRs are a viable management option and are extensively used in high rainfall areas to prevent lodging ( Peake et al, 2020 ). A number of studies have suggested that exogenous application of plant hormones can alter development and the time to flowering ( Razumov, 1960 ; Barabas and Csepely, 1978 ; Al-Jamali et al, 2002 ; Pearce et al, 2013 ), but whether this might be co-opted to adjust the OFP remains unclear.…”

Section: Introductionmentioning

confidence: 99%

“…A range of synthetic and naturally occurring CKs have been used across different growth and development studies. For example, kinetin, a naturally occurring CK, was able to reduce the time to flowering of winter wheat ( Barabas and Csepely, 1978 ). A 20 day vernalization treatment with the addition of kinetin was able to replicate the same heading percentage achieved by 40 days of vernalization, effectively halving the required vernalization time ( Barabas and Csepely, 1978 ).…”

Section: Introductionmentioning

confidence: 99%

“…For example, kinetin, a naturally occurring CK, was able to reduce the time to flowering of winter wheat ( Barabas and Csepely, 1978 ). A 20 day vernalization treatment with the addition of kinetin was able to replicate the same heading percentage achieved by 40 days of vernalization, effectively halving the required vernalization time ( Barabas and Csepely, 1978 ). The reduction in the vernalization requirement was also replicated with the use of the synthetic CK 6-benzyladenine (6-BA) but to a slightly lesser extent ( Csepely and Barabas, 1979 ).…”

Section: Introductionmentioning

confidence: 99%

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Manipulation of Barley Development and Flowering Time by Exogenous Application of Plant Growth Regulators

et al. 2022

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Matching flowering time to the optimal flowering period in Mediterranean cropping zones is pivotal to maximize yield. Aside from variety selection and sowing date, growers have limited options to alter development in season. Plant hormones and growth regulators are used in perennial horticultural systems to manipulate development and floral initiation. In this study, a range of plant hormonal products were tested to analyze their effects on barley (Hordeum vulgare L) development by exogenous spray applications. Plants were grown in controlled conditions under long and short photoperiods with different vernalization treatments. The gibberellin (GA) products demonstrated the greatest potential for altering development. The GA inhibitor trinexapac-ethyl was able to delay the time to flowering in genetically divergent barley cultivars by up to 200 degree days under controlled conditions. A similar delay in flowering could be achieved via application at both early (GS13) and late (GS33) stages, with higher rates delaying flowering further. Notably, trinexapac-ethyl was able to extend the duration of pre-anthesis phases of development. By contrast, GA3 was unable to accelerate development under extreme short (8 h) or long (16 h) day lengths. There was also little evidence that GA3 could reproducibly accelerate development under intermediate 10–12 h day lengths. In addition, sprays of the cytokinin 6-benzyladenine (6-BA) were unable to reduce the vernalization requirement of the winter genotype Urambie. The present study provides baseline data for plant growth regulator treatments that delay cereal development. These treatments might be extended in field studies to align flowering of early sown crops to the optimal flowering period.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Manipulation of Barley Development and Flowering Time by Exogenous Application of Plant Growth Regulators

et al. 2022

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“…Chemical treatment of sprouting seeds (Barabas & Csepely, 1978), and low temperature and chemical treatment of intact immature seeds (Weibel, 1958;Pauli et al, 1962) were examined as the alternative vernalization methods. However, there is no chemical which is effective enough to change winter growth habit into spring growth habit.…”

Section: Introductionmentioning

confidence: 99%

Simplified culture method of detached ears and its application to vernalization in wheat

et al. 1990

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The effects of the addition of sulfurous acid into culture solution and of cold treatment of the solution were examined to simplify the culture of detached wheat ears. In the simplified method, detached ears could be cultured at room temperature on the liquid medium containing 100 gll sucrose and 0.075% sulfurous acid without any sterilization. The immature seeds in detached ears cultured by this method were treated with low temperature or with chemicals known to have vernalizing effect. The chemical treatment did not affect the chilling requirement of immature embryos, although photoperiodic response and narrow-sense earliness were reduced by kinetin and trypsin. The low temperature treatment drastically affected the chilling requirement, and fully vernalized mature seeds having normal germinability were obtained by treating the detached ears in culture with low temperature from 10 days after anthesis.

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