نتایج جستجو برای: stem and roots

تعداد نتایج: 16897380  

2018
Tengfei Yu Qi Feng Jianhua Si Patrick J Mitchell Michael A Forster Xiaoyou Zhang Chunyan Zhao

During the night, plant water loss can occur either through the roots, as hydraulic redistribution (HR), or through the leaves via the stoma, as nocturnal transpiration (En), which was methodologically difficult to separate from stem refilling (Re). While HR and En have been reported across a range of species, ecosystem, and climate zone, there is little understanding on the interactions betwee...

Journal: :Tree physiology 1995
T J Tschaplinski T J Blake

Fifteen, 1-year-old Populus maximowiczii Henry x P. nigra L. 'MN9' trees were decapitated and allowed to sprout. After 8 weeks, all had 6 to 10 coppice shoots. All shoots, except the tallest (dominant) shoot, were removed from five of the trees (pruned treatment), and shoot growth, gas exchange and carbohydrate status were compared in the pruned and unpruned trees. Although photosynthetic rate ...

Journal: :Int. Arab J. Inf. Technol. 2007
Sane Yagi Jim Yaghi

Performing root-based searching, concordancing, and grammar checking in Arabic requires an efficient method for matching stems with roots and vice versa. Such mapping is complicated by the hundreds of manifestations of the same root; the radicals often undergo replacement, fusion, inversion, and/or deletion. It is a challenge, therefore, to keep track of original radicals. An algorithm based on...

Journal: :Plants 2023

The Cactaceae family makes use of different strategies, both physiological and biochemical, for anatomical adjustments that allow them to grow reproduce in arid environments. Morphological studies Gymnocalycium have been scarce, the anatomy phytochemistry are still largely unknown. aim present work was analyze structural, physiological, biochemical features marianae G. oenanthemum, two endemic ...

Journal: :The New phytologist 2011
Sarah Meghan Rich Martha Ludwig Ole Pedersen Timothy David Colmer

• Many wetland plants produce aquatic adventitious roots from submerged stems. Aquatic roots can form chloroplasts, potentially producing endogenous carbon and oxygen. Here, aquatic root photosynthesis was evaluated in the wetland plant Meionectes brownii, which grows extensive stem-borne aquatic roots during submergence. • Underwater photosynthetic light and CO(2) response curves were determin...

Journal: :Asian Pacific Journal of Tropical Biomedicine 2014

Journal: :Forests 2021

Paulownia species are fast growing trees native to China, which being grown in managed plantings several European countries for the production of wood and biomasses. In 2018, wilting, stunting, leaf yellowing, collapse, as a consequence root crown rot, were observed around 40% 2-year-old planting elongata × P. fortunei Calabria (Southern Italy). Two Phytophthora consistently recovered from root...

Journal: :Molecules 2012
Jules Lobe Songue Kouam Etienne Dongo Theophile Ngando Mpondo Robert L White

Phytochemical investigations on the stem bark and roots of the tropical shrub Clausena anisata led to the isolation and characterization three carbazole alkaloids: girinimbine, murrayamine-A and ekeberginine; two peptide derivatives: aurantiamide acetate and N-benzoyl-L-phenylalaninyl-N-benzoyl-L-phenylalaninate; and a mixture of two phytosterols: sitosterol and stigmasterol. The structures of ...

Journal: :Proceedings of the National Academy of Sciences 2010

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