Temperature and photoperiod sensitivity of development in five cultivars of maize (Zea mays L.) from emergence to tassel initiation

Birch, CJ; Hammer, Graeme; Rickert, K. G.

doi:10.1016/s0378-4290(97)00062-2

Cited by 72 publications

(74 citation statements)

References 25 publications

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“…1993, 29 October 1993, 26 November 1993, 30 December 1993, 27 January 1994, 24 February 1994and 29 March 1994 (sowings 1 to 7 respectively). The genetic backgrounds of the cultivars are described elsewhere (Birch et al, 1998).…”

Section: Field Experimentsmentioning

confidence: 99%

“…Full details of the experimental design are presented in Birch et al (1998). Briefly, a split-split plot design with three replications was used.…”

Section: Field Experimentsmentioning

confidence: 99%

“…Assessment of tassel initiation is given in detail in Birch et al (1998). Briefly, three randomly located plants were removed every 2 to 3 d, starting 12 d after emergence.…”

Section: Tassel Initiationmentioning

confidence: 99%

“…The rate of leaf initiation (leaves ( o Cd) -1 ) was calculated from thermal time from germination to tassel initiation, using T b , T opt and T mx of 8, 34and 40 o C (TT gti ), as established for emergence to tassel initiation in Birch et al (1998). These temperatures were also applied to the germination (assumed to occur 1 d after sowing, since non- …”

Section: Calculation Of the Rates Of Leaf Initiation Leaf Tip Appearmentioning

confidence: 99%

“…For sowing dates an additional test (F), proposed by Zar (1974), was used to test the significance of the separate model for each sowing against one overall combined model: initiation to silking and silking to physiological maturity. The concept and use of DEVEL is described extensively in Birch et al (1998). Briefly, though, DEVEL is based on the concept that:…”

Section: Regressionmentioning

confidence: 99%

See 4 more Smart Citations

Modelling leaf production and crop development in maize (Zea mays L.) after tassel initiation under diverse conditions of temperature and photoperiod

Birch

Rickert

Hammer

1998

Field Crops Research

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Section: Field Experimentsmentioning

confidence: 99%

“…Full details of the experimental design are presented in Birch et al (1998). Briefly, a split-split plot design with three replications was used.…”

Section: Field Experimentsmentioning

confidence: 99%

“…Assessment of tassel initiation is given in detail in Birch et al (1998). Briefly, three randomly located plants were removed every 2 to 3 d, starting 12 d after emergence.…”

Section: Tassel Initiationmentioning

confidence: 99%

Section: Calculation Of the Rates Of Leaf Initiation Leaf Tip Appearmentioning

confidence: 99%

Section: Regressionmentioning

confidence: 99%

See 3 more Smart Citations

Modelling leaf production and crop development in maize (Zea mays L.) after tassel initiation under diverse conditions of temperature and photoperiod

Birch

Rickert

Hammer

1998

Field Crops Research

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Calibration and evaluation of JULES‐crop for maize in Brazil

et al. 2022

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Maize (Zea mays L.) is a prominent Brazilian commodity, being the second largest crop produced and fifth exported product by the country. Due to its importance for the agricultural sector, there is a concern about the effect of climate change on the crop. Process-based models are valuable tools to evaluate the effects of climate on crop yields. The Joint UK Land Environment Simulator (JULES) is a land-surface model that can be run with an integrated crop model parameterization. The resulting model (JULES-crop) thus integrates crop physiology principles with the complexity of atmosphere-biosphere coupling. It has been shown to be a valuable tool for large-scale simulations of crop yields as a function of environmental and management variables. In this study, we calibrated JULES-crop using a robust experimental dataset collected for summer and off-season maize fields across Brazil. A targeted local sensitivity analysis was performed to detect parameters of major importance during the calibration process. After calibration, the model was able to satisfactorily simulate both season and off-season cultivars. Modeling efficiency (EF) was high for leaf area index (EF = .73 and .71, respectively, for summer season and off-season datasets), crop height (EF = .89), and grain dry mass (EF = .61 and .89, respectively, for summer season and off-season datasets). The model showed a lower accuracy for simulating leaf dry mass in summer season cultivars (EF = .39) and soil moisture (EF = .44), demonstrating the necessity of further improvements including additional parametrizations of the rainfed conditions.

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Differences in temperature response of phenological development among diverse Ethiopian sorghum genotypes are linked to racial grouping and agroecological adaptation

Tirfessa

McLean²,

Mace

et al. 2020

Crop Science

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Sorghum [Sorghum bicolor (L.) Moench] is an important dryland crop in the semiarid tropics, and temperature and photoperiod are the main environmental factors affecting its phenology and thus adaptation. The objectives of this study were to quantify the response of development rate to temperature and photoperiod for 19 diverse Ethiopian sorghum genotypes, and to determine if differences in these responses could be linked to racial grouping or agroecological adaptation. The genotypes, representing four major sorghum races and adaptation to four agroecological zones, were sown on 12 dates at two locations in Ethiopia with contrasting altitude. This created a range in photoperiod and temperatures relevant to Ethiopian conditions. Days from emergence to flag leaf appearance, anthesis, and maturity were recorded. A predictive phenology modeling framework was used to fit the effects of photoperiod and temperature on the rate of development for both the pre-and post-anthesis periods. Results indicated that the pre-anthesis development rate was independent of photoperiod for the range tested. This result differed from West African germplasm and likely reflects differences in agroecological adaptation and racial background. Significant genotypic differences were observed for the base temperature (0-9.8 • C) and for the optimum rate of development (0.011-0.022 d -1 , with low value indicating late anthesis), with differences related to agroecology and racial type. Post-anthesis differences in the temperature response were minor. The observed differences in pre-anthesis base temperature can positively affect sorghum breeding programs globally, especially in temperate regions where suitability for early spring plantings is often restricted by low temperatures.

show abstract

Temperature and photoperiod sensitivity of development in five cultivars of maize (Zea mays L.) from emergence to tassel initiation

Cited by 72 publications

References 25 publications

Modelling leaf production and crop development in maize (Zea mays L.) after tassel initiation under diverse conditions of temperature and photoperiod

Modelling leaf production and crop development in maize (Zea mays L.) after tassel initiation under diverse conditions of temperature and photoperiod

Calibration and evaluation of JULES‐crop for maize in Brazil

Differences in temperature response of phenological development among diverse Ethiopian sorghum genotypes are linked to racial grouping and agroecological adaptation

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