نتایج جستجو برای: photosynthesis rate and yield
تعداد نتایج: 16897392 فیلتر نتایج به سال:
The effects of nitrogen (N) accumulation and translocation on photosynthesis have been widely reported, while the impacts N accumulation, translocation, simultaneous improvements in grain yield gluten quality dryland wheat still remain unclear. For this reason, relationships between photosynthesis, use efficiency (NUE), related traits yield, quality, 11 representative genotypes 2018–2021 croppi...
Rice (Oryza sativa) and wheat (Triticum aestivum) are the two most commercially important crops, accounting for more than 40% of global food production. They were domesticated in different climates and differ largely in their growth environments: Rice is tropically cultivated in hot, wet climates, whereas wheat tends to be grown in cooler temperate climates. However, both crops have been bred i...
Salinity is a complex phenomenon that involves not just an osmotic effect, but also toxic ion effects and nutritional imbalance. In order to evaluate the effects of severity and duration of sodium chloride stress on some biochemical and photosynthesis parameters of tobacco a factorial experiment was conducted using a randomized completely block design with three replication with using a hydropo...
In order to study the effect of sowing date on grain yield and grain-filling duration of triticale cultivars, an experiment was conducted based on strip-plot experiment with four replicates at Ramin Agricultural Research and Educational Center (RAREC) during 2009-10. The sowing date treatments were November, 10th (Aban, 20th) and December, 4th (Azar, 14th) and the cultivars include: ET.79-3،ET....
The expanded growth model is developed to describe accumulation of plant biomass (Mg ha(-1)) and mineral elements (kg ha(-1)) in with calendar time (wk). Accumulation of plant biomass with calendar time occurs as a result of photosynthesis for green land-based plants. A corresponding accumulation of mineral elements such as nitrogen, phosphorus, and potassium occurs from the soil through plant ...
the two-spotted spider mite, tetranychus urticae koch (acari: tetranychidae) is one of the most important agricultural pests of the world. it causes direct and indirect damage on plants which decreases in photosynthesis and crop yield. the effect of sublethal concentrations of artemisia annua l. (asteraceae) and rosmarinus officinalis l. (lamiaceae) essential oils were assessed on development a...
The response of the marine diatom Phaeodactylum ,tricornutum to Fe deficiency was evaluated in the context of fundamental physiological models of growth and photosynthesis. Fe deficiency induced chlorosis, which decreased Chl a : C ratios and Chl a-specific light-saturated photosynthesis (P,“). In contrast to Pme, (Ye was slightly increased under Fe deficiency, and photosynthesis in Fedeficient...
The rising concentration of carbon dioxide [CO2] in the atmosphere represents an increase in a growthlimiting resource for C3 crop species. Identification of lines or characteristics of lines which have superior yield at elevated [CO2] could aid in adaptation to this global change. While intraspecific variation in responses to elevated [CO2] has been found in several species, intraspecific diff...
Drought causes a decrease in tobacco yield and quality as well reduction net photosynthetic rate. Salicylic acid (SA) is involved the regulation of many physiological processes has been widely used to improve plant drought tolerance. The hydroponic experiment was carried out on flue-cured variety K326. SA solutions (0.3 mM) were sprayed leaves every day for three days, after which 15% PEG-6000 ...
چکیده به منظور بررسی اثر تنوع گیاهی و نوع منبع تغذیه ای بر تنوع و تراکم علفهای هرز و حشرات، کارایی مصرف نهاده ها ( نور، آب، عناصر غذایی) و عملکرد و خصوصیات کیفی چند گونه زراعی، آزمایشی به صورت کرتهای خردشده بر پایه طرح بلوکهای کامل تصادفی با سه تکرار در دو سال زراعی 1385-1384 و 1386-1385 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه فردوسی مشهد به اجرا درآمد. تیمارهای مورد بررسی دو منبع کود دامی و...
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