نتایج جستجو برای: leaf chlorophyll content spad

تعداد نتایج: 504386  

Journal: :Acta biologica Hungarica 2015
Mohamed N Barakat Mohamed Saleh Abdullah A Al-Doss Khaled A Moustafa Adel A Elshafei Fahed H Al-Qurainy

Segregating F4 families from the cross between drought sensitive (Yecora Rojo) and drought tolerant (Pavon 76) genotypes were made to identify SSR markers linked to leaf chlorophyll content, flag leaf senescence and cell membrane stability traits in wheat (Triticum aestivum L.) under water-stressed condition and to map quantitative trait locus (QTL) for the three physiological traits. The paren...

2012
G. Alenyà C. Torras

We present a novel method for the robotized probing of plant leaves using Time-of-Flight (ToF) sensors. Plant images are segmented into surface patches by combining a segmentation of the infrared intensity image, provided by the ToF camera, with quadratic surface fitting using ToF depth data. Leaf models are fitted to the boundaries of the segments and used to determine probing points and to ev...

Journal: :Computers and Electronics in Agriculture 2021

The analyses of online quality measurements four lettuce cultivars (Rex, Tacitus, Black Seeded Simpson, Flandria) using hyperspectral image processing techniques have been studied. Seedlings were planted in Rockwool cubes and fed for 3 weeks hydroponic nutrient solution containing 0, 50, 100, 150, 200, 250, 300 ppm nitrogen. images the freshly cut leaves captured camera wavelength range 400–1,0...

Journal: :Revista Facultad Nacional de Agronomía 2021

The determination of leaf nitrogen content (LNC) by indirect methods is essential for silvicultural management forest crops. application photography or rapid measurement equipment, such as chlorophyll index (soil-plant analysis development-SPAD), increasingly used due to its low-cost, ease estimation and accuracy. Therefore, the aim this study was estimate foliar from nondestructive in plantati...

Extended Abstract Introduction and Objective: Various environmental stresses, especially water deficit stress have several and major effects on maize growth and production. Drought is one of the abiotic stresses that due to the great variety of rainfall conditions, it is known from Iran as the most important factor limiting the growth and production of crops. Therefore, the effect of water def...

Journal: :PloS one 2015
Cheng Chang Jie Lu Hai-Ping Zhang Chuan-Xi Ma Genlou Sun

As the main pigment in photosynthesis, chlorophyll significantly affects grain filling and grain weight of crop. Cytokinin (CTK) can effectively increase chlorophyll content and chloroplast stability, but it is irreversibly inactivated by cytokinin oxidase (CKX). In this study, therefore, twenty-four pairs of primers were designed to identify variations of wheat CKX (Tackx) genes associated wit...

حرفی, طیبه, طباطبائی, سید جلال,

The aim of this study was measuring nitrate and leaf chlorophyll content in aerial parts of plant, from which we can predict the hypocotyl nitrate content of radish. A factorial experiment in a completely randomized design with five replicates was carried out on two varieties of radish (Cherry Belle and Sparker). Plants were grown in perlite containing pots and were treated with five levels of ...

Journal: :بوم شناسی کشاورزی 0
مژگان ثابت تیموری محمد کافی زینب اورسجی کبری اروجی

in order to investigate the effects of corm tunic, corm weight and drought stress on saffron (crocus sativus l.), an experiment was conducted at the greenhouse of ferdowsi university of mashhad, iran. treatment were combination of four corm weights range (2-4, 4-6, 6-8 and 8-10 g), two levels of water availability (100% field capacity and drought) and two levels of corm tunic (natural corm with...

2010
M. Jain S. Tiwary R. Gadre

Treatment of maize seedlings with different concentrations of sorbitol decreased the rate of germination substantially. Root and shoot length was also reduced by sorbitol treatment, however, decrease in root length was lower than shoot length. Incubation of leaf segments from maize seedlings grown in continuous light with sorbitol decreased the fresh weight and increased the dry weight in a con...

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