Leaf Growth in Marquis Wheat, as Regulated by Temperature, Light Intensity, and Daylength

Friend, D. J. C.; Helson, V. A.; Fisher, J. E.

doi:10.1139/b62-123

Cited by 104 publications

(58 citation statements)

References 21 publications

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“…1) and increased amounts of dry mass accumulated (Fig. 2), which is in agreement with the findings of Friend et al (13). Tillering data are similar to the results of Evans et al (12), who found that tiller number increased linearly with increasing solar radiation.…”

Section: Results and Discussion Effect Of Radiation Intensitysupporting

confidence: 92%

“…Plants grown in the reduced P treatment, therefore, did not accumulate more dry mass in response to PPF than did plants grown in other treatments. The data in Figures 1 and 2, and previous research (13), also indicate that dry mass was positively correlated with tiller production; i.e. larger plants produced more tillers (Fig.…”

Section: Results and Discussion Effect Of Radiation Intensitysupporting

confidence: 79%

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Morphological Responses of Wheat to Changes in Phytochrome Photoequilibrium

Barnes¹,

Bugbee²

1991

Plant Physiol.

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Wheat plants (Triticum aestivum L.) Tillering in grasses is affected not only by radiation quantity but also by its quality, or SED3, which affects the activity of at least two plant photoreceptors, the blue light receptor(s) and phytochrome (1-3, 9, 10, 16, 19). The characteristic SED of the radiation source determines the activity of each photoreceptor. Responses to blue light, for example, appear to be controlled by the absolute amount of blue light (400-500 nm) received by the plant. Phytochrome responses, on the other hand, are controlled by the ratio of the amount of phytochrome in the active form (Pfr) to the total amount of phytochrome (PtotaI), or Ptr/PtotjI ('P). This ratio ((P) in the plant can be predicted from the SED of the radiation source. Past research has relied mainly on an approximation of'P, called the v ratio, which is based on the relative amounts of radiation at the peak absorption wavelengths for each form of phytochrome, generally considered to be centered around 660 nm for Pr and 730 nm for Pfr. However, exact values for these peak absorbances can vary, and different researchers have used v to represent a range of ratios (5,7,11,17,20,26). In this paper, v represents the ratio of radiation at 660:730 nm unless otherwise specified.Holmes and Smith (17, 25) characterized the relationship between v and 'P for several natural and artificial radiation sources. They found that values for 'P increased from a minimum of 0.04 to about 0.54 (typical sunlight 'P) for corresponding v values of 0.05 and 1.15 (typical sunlight t), respectively. (8) (20) found that wheat tiller number decreased only slightly from 7.5 and 7.1 in response to a large decrease in v (645:735 nm) from 5.0 to 1.5.Lower v ratios in dense canopies due to natural filtration by leaves (shading) appear to have the same effect as lower r ratios artificially created by manipulation of 'P in controlled environments. Lowering of v by either means results in the morphological responses of increased stem elongation (17,18,24,26) and reduced tillering (6,20

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Section: Results and Discussion Effect Of Radiation Intensitysupporting

confidence: 92%

Section: Results and Discussion Effect Of Radiation Intensitysupporting

confidence: 79%

Morphological Responses of Wheat to Changes in Phytochrome Photoequilibrium

Barnes¹,

Bugbee²

1991

Plant Physiol.

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“…At the later stages of crop growth, declined in CGR caused by mutual shading and leaf senescence which might reduced the photosynthetic efficiency and ultimately reduced the dry matter accumulation rate. Similar findings were also observed with different crop species by Friend et al (1962), Wall and Cartwright (1974), Stern and Kirby. (1979).…”

Section: Fig 1 Effect Of Sowing Dates On Leaf Area Index Of Bari Mosupporting

confidence: 87%

Effect of Sowing Time Based Temperature Variations on Growth, Yield and Seed Quality of Garden Pea

Ali

Aziz

Sarker

et al. 2016

Bangladesh Agron. J.

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“…Indeed, at a constant temperaplants was curvilinear with temperature, with an optiture the rate of emergence of successive leaves on the mum at about 21°C. These findings were in agreement main stem of a wheat plant is constant, but the rate of with the early report by Friend et aL (1962) that leaf leaf development is different at different temperatures growth rates in wheat show a curvilinear relationship (Cao and Moss, 1989a).…”

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confidence: 90%