نتایج جستجو برای: rose cultivars
تعداد نتایج: 50436 فیلتر نتایج به سال:
light as an important environmental factor, influences many aspects of plant growth and development. leaves are different in some characters including stomatal behavior under shade or light conditions. in this study, the effects of different levels of light intensity on stomatal behavior of two rose cultivars, ‘gulmira’ and ‘red one’, were evaluated under controlled conditions. to obtain differ...
Downy mildew (Plasmopara viticola) and anthracnose (Sphaceloma ampelinum) are two of the major diseases of most grapevine (Vitis vinifera L.) cultivars grown in Thailand. Therefore, breeding grapevines for improved downy mildew and anthracnose resistance is crucial. Factorial crosses were made between three downy mildew and/or anthracnose resistant lines ('NY88.0517.01', 'NY65.0550.04', and 'NY...
Flower color is mainly determined by anthocyanins. Rosa hybrida lacks violet to blue flower varieties due to the absence of delphinidin-based anthocyanins, usually the major constituents of violet and blue flowers, because roses do not possess flavonoid 3',5'-hydoxylase (F3'5'H), a key enzyme for delphinidin biosynthesis. Other factors such as the presence of co-pigments and the vacuolar pH als...
A new model to analyse reciprocal transfer experiments to assess stages of photoperiod sensitivity in Antirrhinum has been validated in the present study. Flowering time and leaf numbers data of Antirrhinum cultivars Chimes White, Liberty White, Ariane, Winter Euro Rose, Sonnet and Rocket Orchid were used for the validation of the model. Six plants of each cultivar were transferred from LD to S...
The reuse of saline wastewaters and groundwaters becomes a viable option for the irrigation of salt tolerant floral crops as competition for high quality water increases. A completely randomized design with three replications was used to assess the effects of two water ionic compositions and six salinity levels on the production and mineral accumulation of two cultivars of Celosia argentea var....
The floral headspace compounds of Chinese Rosa rugosa germplasms that were isolated by an automated headspace sampler with built-in trap, and followed by gas chromatography-mass spectrometry for identification and quantification. Up to 33 volatile compounds were identified from the 23 rose germplasms, including nine alcohols, five esters, three alkanes, 10 terpenes, three aldehydes, two ketones...
Dog rose (Rosa canina) is one of the most important flower crops in the world and has a value in ornamental, pharmaceutical and cosmetic trade. Also it was used as a root stock for other cultivars of Rose. Hence this investigation was attempted with the aim to study direct regeneration of Rosa canina. The experimental data of the present investigation was analyzed statistically by using complet...
A coupled model of leaf photosynthesis and stomatal conductance as a function of photosynthetically active radiation (PAR), CO2, leaf temperature, relative humidity, and leaf age was calibrated for rose leaves. The photosynthetic parameters: maximum carboxylation rate (Vcmax), potential rate of electron transport (Jmax), rate of triose phosphate utilization (TPU), and leaf dark respiration rate...
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