نتایج جستجو برای: including chlorophyll

تعداد نتایج: 991421  

2007
F. CHO

From the absorption spectra and the excitation spectra of chlorophyll a fluorescence measured (4-77 °K) at different wavelengths (685-760 nm) and their comparison with the emission spectra published elsewhere 23, we confirm that both the Pigment Systems (I and II) contain chlorophyll b, chlorophyll a 670 and chlorophyll a 678. But System II is relatively enriched in chlorophyll b and System I i...

In this study, the effect of vermicompost and mycorrhizal fungi was investigated on growth, yield, chlorophyll pigments, leaf antioxidant enzymes, and seed silibinin content of Silybum marianum, milk thistle. The seeds were inoculated by two species of mycorrhiza fungi, Glomus mosseae and G. intraradices, and plants were irrigated and treated with 0, 25, 50, and 75% vermicompost after culturing...

Journal: :Remote Sensing 2017
Chen Zeng Tao Zeng Andrew M. Fischer Huiping Xu

A phytoplankton bloom occurred in Ardley Cove, King George Island in January 2016, during which maximum chlorophyll-a reached 9.87 mg/m3. Records show that blooms have previously not occurred in this area prior to 2010 and the average chlorophyll-a concentration between 1991 and 2009 was less than 2 mg/m3. Given the lack of in situ measurements and the poor performance of satellite algorithms i...

Journal: :Frontiers in plant science 2015
Xiaoping Wang Xiyu Yang Siyu Chen Qianqian Li Wei Wang Chunjiang Hou Xiao Gao Li Wang Shucai Wang

Dramatic increase in the use of nanoparticles (NPs) in a variety of applications greatly increased the likelihood of the release of NPs into the environment. Zinc oxide nanoparticles (ZnO NPs) are among the most commonly used NPs, and it has been shown that ZnO NPs were harmful to several different plants. We report here the effects of ZnO NPs exposure on biomass accumulation and photosynthesis...

Journal: :Plant physiology 1963
H V Marsh H J Evans G Matrone

For over 100 years it has been known that iron is essential for the growth of higher plants and that it is involved in some manner with chlorophyll metabolism. Jljin (17, 18, 19) demonstrated that iron deficiency in plants resulted in decreased dry weight, salt, and protein nitrogen contents and increased contents of amino and organic acids. Extensive studies (8, 9, 25, 33) have confirmled Ilj ...

Journal: :Plant physiology 1982
R M Smillie R Nott

The potential of measurements of chlorophyll fluorescence in vivo to detect cellular responses to salinity and degrees of salt stress in leaves was investigated for three crop plants. Sugar beet (Beta vulgaris L.) (salt tolerant), sunflower (Helianthus annuus L.) (moderately salt tolerant), and bean (Phaseolus Vulgaris L. cv Canadian Wonder) (salt intolerant) were grown in pots and watered with...

Journal: :Plant biology 2008
H Ougham S Hörtensteiner I Armstead I Donnison I King H Thomas L Mur

The pathway of chlorophyll catabolism during leaf senescence is known in a fair amount of biochemical and cell biological detail. In the last few years, genes encoding a number of the catabolic enzymes have been characterized, including the key ring-opening activities, phaeophorbide a oxygenase (PaO) and red chlorophyll catabolite reductase (RCCR). Recently, a gene that modulates disassembly of...

Journal: :چغندرقند 0
سمر خیامیم استادیار موسسه تحقیقات اصلاح و تهیه بذر چغندرقند محمد رضا جهاداکبر مربی مرکز تحقیقات کشاورزی و منابع طبیعی اصفهان حمید نوشاد مربی موسسه تحقیقات چغندرقند فرانک روزبه مربی موسسه تحقیقات چغندرقند لیلا زاویه مودت کارشناس ارشد سازمان جهاد کشاورزی آذربایجان غربی

determination of chlorophyll content and chlorophyll fluorescence has the potential needed to analyze the efficiency of photosynthesis in plants against environmental stresses, especially salinity, and its simplicity facilitates stress evaluation. in order to study the response of different photosynthetic characters to salinity stress at different sugar beet growth stages, two separate experime...

2013
Ning Li Jizeng Jia Chuan Xia Xu Liu Xiuying Kong

The yellow-green leaf mutant has a non-lethal chlorophyll-deficient mutation that can be exploited in photosynthesis and plant development research. A novel yellow-green mutant derived from Triticum durum var. Cappelli displays a yellow-green leaf color from the seedling stage to the mature stage. Examination of the mutant chloroplasts with transmission electron microscopy revealed that the sha...

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