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دانلود رایگان ... The contribution of green parts of the ear to grain filling in old and modern cultivars ofcultivars of bread wheat (Triticum aestivum L.): Evidence for genetic gains over the past centuryاين مقاله مربوط به گياه گندم بوده كه در سال 2012 در سايت ساينس دايركت نمايه شده است اين مقاله 8 صفحه بوده و فرمت آن pdf است.
Ear photosynthesis
Grain filling
Stem reserves
Triticum aestivum
Wheat
مقاله
پاورپوینت
فایل فلش
کارآموزی
گزارش تخصصی
اقدام پژوهی
درس پژوهی
جزوه
خلاصه
Response of wheat ear photosynthesis and …
: The contribution of green parts of the ear to grain filling in old and modern cultivars of bread wheat (Triticum aestivum L.): Evidence for genetic gains over the past century. — Field Crop Res. 134: 208–215, 2012. Article; Google Scholar
Shading effects on the yield of an Argentinian …
Green Area Duration during the Grain Filling Period of an Argentine Wheat Cultivar as Influenced by Sowing Date, Temperature and Sink Strength. Journal of …
The contribution of green parts of the ear to grain ...
12/08/2012 · The contribution of green parts of the ear to grain filling in old and modern cultivars of bread wheat (Triticum aestivum L.): Evidence for genetic gains over the past century Author links open overlay panel M.L. Maydup M. Antonietta J.J. Guiamet E.A. Tambussi
strategy of the wheat plant in acclimating growth …
The plants were divided into root, main stem vegetative parts, main stem grains, tiller vegetative parts, and tiller grains. After drying at 75 °C, the plant material was weighed and ground to fine powder for N analysis. Nitrogen was analysed using a Carlo Erba NA1500 …
CSIRO PUBLISHING | Crop and Pasture Science
In crop studies, shading is a common approach for reducing source activity (i.e. assimilates produced by photosynthesis); however, if source reduction is not directly proportional to the degree of light attenuation, estimations could be flawed. We analysed the effects of shading at three levels on light transmittance, air and canopy temperatures, and actual photosynthetic activity at different ...
The contribution of the awns of bread wheat …
The contribution of the awns of bread wheat (Triticum aestivum L.) to grain filling: Responses to water deficit and the effects of awns on ear temperature and hydraulic conductance Author ... Triticum aestivum, cultivars, drought, drought tolerance, electron transfer, environmental factors, filling period, leaves, photosynthesis ...
Changes in physiological attributes of the dry …
The changes in grain yield were mostly associated with changes in number of grains per m 2 rather than with changes in individual grain weight. It appears that the source: sink ratio during the grain-filling period was very high in old cultivars, whereas the source: sink ratio in modern cultivars …
(1992) Radiation Use Efficiency of an Old and a New Maize ...
tify the contribution of radiation use efficiency (RUE, g dry matter MJ ') to the difference in dry matter accumulation between an old and a new maize (Zea mays L.) hybrid.
Detection and analysis of wheat spikes using …
15/11/2018 · Figure 1 shows the overall work-flow of the in-field wheat spike detection system. The goal is to develop a fast and accurate system which can detect spikes from field images. The output is a list of bounding boxes enclosing wheat spikes, as well as the confidence level for each box, along with a count of the total number of spikes.
Changes in physiological attributes of the dry …
The changes in grain yield were mostly associated with changes in number of grains per m 2 rather than with changes in individual grain weight. It appears that the source: sink ratio during the grain-filling period was very high in old cultivars, whereas the source: sink ratio in modern cultivars …
Stay-green: a potentiality in plant breeding
The stay-green character is characterized by a longer green state of the plant in the late period of grain filling, establishing a senescence pattern in which leaves and stem are the last parts to loose photosynthetic ability, providing greater production of sugars from photosynthesis (SILVA et al., 2008).
Shading effects on the yield of an Argentinian …
Green Area Duration during the Grain Filling Period of an Argentine Wheat Cultivar as Influenced by Sowing Date, Temperature and Sink Strength. Journal of …
Seasonal Changes in Canopy ... - Oxford Academic
Plant grown under FACE also had 36% greater ear weight at grain filling (94DAT), and 15% greater ear weight at grain maturity (119 DAT) than those grown under AMB. Fig. 3 shows the changes in green leaf area index (LAI) of rice plants grown under AMB and FACE conditions.
The contribution of the awns of bread wheat …
The contribution of the awns of bread wheat (Triticum aestivum L.) to grain filling: Responses to water deficit and the effects of awns on ear temperature and hydraulic conductance Author ... Triticum aestivum, cultivars, drought, drought tolerance, electron transfer, environmental factors, filling period, leaves, photosynthesis ...
The contribution of the awns of bread wheat …
However, in general terms modern cultivars seem to have a higher awn contribution (and higher awns size) than old ones. In summary, awns may have positive (increased photosynthetic area and activity, tolerance to drought) and negative (increased ear temperature) effects on grain filling, and their final impact on yield will depend on the interaction between these effects and prevailing ...
Detection and analysis of wheat spikes using …
15/11/2018 · Figure 1 shows the overall work-flow of the in-field wheat spike detection system. The goal is to develop a fast and accurate system which can detect spikes from field images. The output is a list of bounding boxes enclosing wheat spikes, as well as the confidence level for each box, along with a count of the total number of spikes.
strategy of the wheat plant in acclimating growth …
The plants were divided into root, main stem vegetative parts, main stem grains, tiller vegetative parts, and tiller grains. After drying at 75 °C, the plant material was weighed and ground to fine powder for N analysis. Nitrogen was analysed using a Carlo Erba NA1500 …
Response of wheat ear photosynthesis and …
: The contribution of green parts of the ear to grain filling in old and modern cultivars of bread wheat (Triticum aestivum L.): Evidence for genetic gains over the past century. — Field Crop Res. 134: 208–215, 2012. Article; Google Scholar
Crop growth and relative growth rates of old and …
Relative to the old cultivars, modern wheats were characterized by a greater RGR during the vegetative phase. This was achieved at a lower initial GAI, which persisted as the season progressed and was associated with a higher CGR at anthesis and greater grain yield at the end of the season.
Phenotyping of field-grown wheat in the UK …
The contribution of the light response of flag leaf photosynthesis to grain filling was evidenced by positive correlations between several photosynthetic traits and HI, as well as GY . Overall mean values for A Q250 , A Q500 , A Q1000 , and A Q1800 were 11.4, 19.2, 25.4, and 27.9 μmol m −2 s −1 pre-anthesis and 10.2, 16.0, 20.3, and 21.9 μmol m −2 s −1 post-anthesis.
Photosynthesis in reproductive structures: costs and ...
The methods for assessing the contribution by reproductive structure to grain-filling are invasive and prone to problems of compensatory increases in photosynthesis by those structures that have not been manipulated in response to the decreased contribution from structures that have been prevented from photosynthesizing.
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Thus, the potential ear N content could be a positive trait for plant phenotyping, especially under water and nitrogen limiting conditions. In that sense, genotypic variability existed at least between old (tall) and modern (semidwarf) cultivars, with the ear from modern genotypes exhibiting less relative contribution to the total grain N.
Crop growth and relative growth rates of old and …
Relative to the old cultivars, modern wheats were characterized by a greater RGR during the vegetative phase. This was achieved at a lower initial GAI, which persisted as the season progressed and was associated with a higher CGR at anthesis and greater grain yield at the end of the season.