نتایج جستجو برای: chlorophyll meter figure

تعداد نتایج: 153488  

Journal: :Plant physiology 1989
K M Warpeha L S Kaufman

Blue light is known to induce suppression of stem elongation. To avoid the complication of blue-light-induced transformation of phytochrome we have adapted the procedure of measuring blue-light-induced suppression of stem elongation in Pisum sativum L. var Alaska grown under continuous red light. The resulting fluence-response curve for suppression of epicotyl elongation measured twenty-four ho...

Journal: :Advances in biological sciences research 2022

2015
Dongliang Xiong Jia Chen Tingting Yu Wanlin Gao Xiaoxia Ling Yong Li Shaobing Peng Jianliang Huang

Chlorophyll meters are widely used to guide nitrogen (N) management by monitoring leaf N status in agricultural systems, but the effects of environmental factors and leaf characteristics on leaf N estimations are still unclear. In the present study, we estimated the relationships among SPAD readings, chlorophyll content and leaf N content per leaf area for seven species grown in multiple enviro...

2005
Abby K. van den Berg Timothy D. Perkins

A field-portable tool for nondestructive foliar anthocyanin content estimation would be beneficial to researchers in many areas of plant science. An existing commercial chlorophyll content meter was modified to measure an index of anthocyanin content. The ability of the experimental anthocyanin meter (ACM) to estimate total extractable anthocyanin content was tested in sugar maple (Acer sacchar...

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