Vernalization in calabrese (Brassica oleracea var. italica) - a model for apex development

Wurr, D. C. E.; Fellows, Jane R.; Phelps, K.; Reader, R. J.

doi:10.1093/jxb/46.10.1487

Cited by 34 publications

(42 citation statements)

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“…This agrees with the literature since there is no report of any solar radiation effect for the duration of EFI (Miller et al, 1985Wurr et al, 1995Mourao and Hadley, 1998).…”

Section: Solar Radiation Responsesupporting

confidence: 92%

Predicting broccoli development I. Development is predominantly determined by temperature rather than photoperiod

Tan

Birch

Wearing

et al. 2000

Scientia Horticulturae

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temperatures of 0 and 20 °C, respectively were consistent across cultivars, but thermal time requirements were cultivar specific. Differences in thermal time between cultivars during FIHM were small and of little practical importance, but differences in thermal time during EFI were large. Sensitivity to photoperiod and solar radiation was low in the three cultivars used. When the thermal time models were tested on independent data for five cultivars ('Fiesta', 'Greenbelt', 'Marathon', 'CMS Liberty' and 'Triathlon') grown as commercial crops over two years, they adequately predicted floral initiation and harvest maturity.

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“…This agrees with the literature since there is no report of any solar radiation effect for the duration of EFI (Miller et al, 1985Wurr et al, 1995Mourao and Hadley, 1998).…”

Section: Solar Radiation Responsesupporting

confidence: 92%

Predicting broccoli development I. Development is predominantly determined by temperature rather than photoperiod

Tan

Birch

Wearing

et al. 2000

Scientia Horticulturae

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“…Most broccoli cultivars also appear to have a quantitative cold requirement or vernalization period to produce flowers (i.e., buds) below 24°C which is warmer than many other brassica crops (Fontes et al, 1967;Wurr et al, 1995). We were below these broccoli vernalization thresholds from November through February, but it remains a challenge for regional high tunnel growers to manage daily temperature fluctuations as the crop progresses from vegetative to generative plant growth.…”

Section: Discussionmentioning

confidence: 96%

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

O’Connell

Tate

2017

horts

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Abstract. There is a lack of information related to adapting high tunnel systems to humid, subtropical climates in the Southeastern United States, resulting in a disadvantage for their use to extend growing seasons and meet the increasing demand for local horticulture products. This research project explored the possibility of growing organic broccoli and cauliflower (Brassica oleracea L.) under high tunnels during two consecutive fall/winter seasons in northeast Georgia (USDA plant hardiness zone 8a), particularly evaluating questions related to crop feasibility, planting dates and cultivar choices. Marketable yields for high tunnel broccoli ranged from ' '11,800 to 15,800 kg · ha L1 and were not consistently affected by either planting date or cultivar type. Broccoli required an additional 8-45 days to reach maturity compared with seed catalog estimates with harvesting occurring during mid-December to mid-January. Marketable yields for high tunnel cauliflower ranged from ' '8600 to 26,000 kg · ha L1 and were affected primarily by the cultivar type. Cauliflower required an additional 19-56 days to mature with harvesting occurring during the entire month of January. The first season was cooler than the second with the lowest growing degree days (GDD) units accumulated during the months of January and February. Differences in air temperature at the crop canopy between the high tunnel system and open field were largely related to high tunnel ventilation protocols that changed as the season progressed. An average heat gain of 7 to 8 8C under the high tunnels at crop canopy height was documented on the coldest days and an average of 1 8C gain on the warmest days compared with the open field. Overall, winter broccoli appeared more adaptable to high tunnels than cauliflower but production of both crops may be possible if planting dates and cultivar types are taken into account for the region.

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“…Shogun were initially raised at two temperatures: l3°C, at which the rate of vernalization is near to the optimum, and 23°C, at which vernalization takes place very slowly or not at all (Wurr et al, 1995). After being transplanted into pots, plants were either transferred from l3°C to 23°C, or remained at 23°C until final transfer to l3°C at nine stages of growth.…”

Section: Fitting the Modelmentioning

confidence: 99%

A model for leaf production and apex development in calabrese

Fellows¹,

Reader²,

Wurr³

1997

Journal of Horticultural Science

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Vernalization in calabrese (Brassica oleracea var. italica) - a model for apex development

Cited by 34 publications

References 0 publications

Predicting broccoli development I. Development is predominantly determined by temperature rather than photoperiod

Predicting broccoli development I. Development is predominantly determined by temperature rather than photoperiod

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

A model for leaf production and apex development in calabrese

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