Effect of saline water on relative water content, rate of photosynthesis, chlorophyll content and yield of indian mustard (Brassica junceal.)

2014 ◽  
Vol 5 (1) ◽  
pp. 37
Author(s):  
Kripa Shanker ◽  
S. K. S. Parihar ◽  
S. K. Biswas ◽  
Kuldeep
Keyword(s):  
Water Content ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Saline Water ◽  
Indian Mustard ◽  
Relative Water ◽  
Rate Of Photosynthesis

scholarly journals Effect of cold stress on boro rice seedlings

2017 ◽  
Vol 9 (2) ◽  
pp. 1036-1041 ◽  
Author(s):  
Priyanka Kumari ◽  
H. K. Jaiswal
Keyword(s):  
Cold Stress ◽  
Water Content ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Stability Index ◽  
Membrane Stability ◽  
Membrane Stability Index ◽  
Relative Water ◽  
Cold Tolerant ◽  
Boro Rice

Cold stress at seedling stage is a major constraint in boro rice production. Nine boro rice lines were crossed in diallel fashion excluding reciprocals to obtain 36 crosses. All the 36 crosses along with parents were grown in nursery in three seasons (boro-2014, kharif-2015 and boro-2015). Performance of seedlings for survival per cent, chlorophyll content, relative water content, membrane stability index was recorded just before transplanting in all the three seasons. Scoring for cold tolerance was done in both boro seasons. Gautam showed highest survival rate over three seasons. Among crosses, IR 64 x Krishna Hamsa showed highest survival (84%) in boro-2014, MTU 1010 x Jaya (86.33%) in boro-2015 and MTU 1010 x Krishna Hamsa (95.67%) in kharif-2015. Jaya x Krishna Hamsa was most cold tolerant cross over both boro seasons. Significant positive correlation was observed among survival per cent, chlorophyll content, relative water content and membrane stability index over seasons.

scholarly journals Effects of Soil and Soil-Less Culture on Morphology, Physiology and Biochemical Studies of Vegetable Plants

2019 ◽  
Vol 7 (2) ◽  
pp. 181-188
Author(s):  
Sangeeta Sankhalkar ◽  
Richa Komarpant ◽  
Tanvi Raut Dessai ◽  
Jennis Simoes ◽  
Sunita Sharma
Keyword(s):  
Water Content ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
New Technology ◽  
Research Work ◽  
Slight Variation ◽  
Growth Physiology ◽  
Root Shoot Ratio ◽  
Biochemical Studies ◽  
Relative Water

Agriculture has been on the forefront of every country’s economy. In the recent years hydroponic has emerged as a new technology to grow plants. It requires less space, adds greenery around, easy to be practiced indoors and on open spaces. Although hydroponic is now being practiced with total success, not many studies are done on the physiology and biochemistry of the plant grown. The present work was planned with an objective to undertake physiological and biochemical studies such as relative water content (RWC), root shoot ratio, chlorophyll content, sugars and protein in vegetable plants (pea, okra and moong) grown with soil and soil-less cultures (hydroponics). Our results showed higher root ratio in plants grown in hydroponics than in the soil. A slight variation in relative water content (RWC) was observed. Chlorophyll content was found to be higher in okra and moong plants grown in soilless culture. Total Sugar and protein content in soil grown okara & moong seedlings were slightly higher in comparison to those grown hydroponically indicating that soil is best medium for plant growth. Physiology of hydroponically grown plants requires more research work as it is an alternative technology to grow plants in lands where soils are non fertile or where space or agriculture is a constrain.

scholarly journals Character association studies in Bread wheat genotypes for early heat tolerance and grain micronutrient content

2021 ◽  
Vol 22 (1&2) ◽  
pp. 111-125
Author(s):  
Rabiya Parveen ◽  
Satish Kumar Singh ◽  
Mithilesh Kumar Singh ◽  
Mainak Barman
Keyword(s):  
Grain Yield ◽  
Water Content ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Harvest Index ◽  
Zinc Content ◽  
Wheat Genotypes ◽  
Seedling Length ◽  
Grain Zinc ◽  
Relative Water

Thirty bread wheat genotypes were tested by adopting Randomized Block Design with three replications during 2019-20, under two different environments, i.e. early and timely sown conditions. The ultimate goal was to determine the relationship between yield and yield contributing traits and classify traits that have the highest direct and indirect effects on grain yield under both environmental circumstances. Grain yield was positively and significantly correlated with no. of tiller/plant, no. of grains/spike, relative water content, spike fertility, harvest index, grain zinc content and chlorophyll content at the level of both genotype and phenotype; conversely, found significantly negative with canopy temperature and non-significant with days to 50 % flowering and seedling length. Under stress condition, the correlation for grain yield/plant was found significant, and it was correlated positively with no. of tiller/plant, spike fertility, relative water content, harvest index and grain zinc content and non-significantly with seedling length, no. of grain/spike, chlorophyll content, flag leaf area and thousand-grain weight. At the level of both genotype and phenotype, grain yield per plant had a high direct effect in the positive direction by harvest index followed by no. of tiller/plant, no. of grain/spike, relative water content. Thus, more weightage should be given towards these traits as selecting these traits can be rewarding to achieve high yielding wheat genotypes.

scholarly journals Nanopotassium, Nanosilicon, and Biochar Applications Improve Potato Salt Tolerance by Modulating Photosynthesis, Water Status, and Biochemical Constituents

2022 ◽  
Vol 14 (2) ◽  
pp. 723
Author(s):  
Abdel Wahab M. Mahmoud ◽  
Mahmoud M. Samy ◽  
Hoda Sany ◽  
Rasha R. Eid ◽  
Hassan M. Rashad ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Plant Growth ◽  
Water Content ◽  
Chlorophyll Content ◽  
Acid Content ◽  
Relative Water Content ◽  
Combined Treatment ◽  
Potato Plants ◽  
Relative Water ◽  
Abscisic Acid Content

Salinity is one of the main environmental stresses, and it affects potato growth and productivity in arid and semiarid regions by disturbing physiological process, such as the photosynthesis rate, the absorption of essential nutrients and water, plant hormonal functions, and vital metabolic pathways. Few studies are available on the application of combined nanomaterials to mitigate salinity stress on potato plants (Solanum tuberosum L. cv. Diamont). In order to assess the effects of the sole or combined application of silicon (Si) and potassium (K) nanoparticles and biochar (Bc) on the agro-physiological properties and biochemical constituents of potato plants grown in saline soil, two open-field experiments were executed on a randomized complete block design (RCBD), with five replicates. The results show that the biochar application and nanoelements (n-K and n-Si) significantly improved the plant heights, the fresh and dry plant biomasses, the numbers of stems/plant, the leaf relative water content, the leaf chlorophyll content, the photosynthetic rate (Pn), the leaf stomatal conductance (Gc), and the tuber yields, compared to the untreated potato plants (CT). Moreover, the nanoelements and biochar improved the content of the endogenous elements of the plant tissues (N, P, K, Mg, Fe, Mn, and B), the leaf proline, and the leaf gibberellic acid (GA3), in addition to reducing the leaf abscisic acid content (ABA), the activity of catalase (CAT), and the peroxidase (POD) and polyphenol oxidase (PPO) in the leaves of salt-stressed potato plants. The combined treatment achieved maximum plant growth parameters, physiological parameters, and nutrient concentrations, and minimum transpiration rates (Tr), leaf abscisic acid content (ABA), and activities of the leaf antioxidant enzymes (CAT, POD, and PPO). Furthermore, the combined treatment also showed the highest tuber yield and tuber quality, including the contents of carbohydrates, proteins, and the endogenous nutrients of the tuber tissues (N, P, and K), and the lowest starch content. Moreover, Pearson’s correlation showed that the plant growth and the tuber yields of potato plants significantly and positively correlated with the photosynthesis rate, the internal CO2 concentration, the relative water content, the proline, the chlorophyll content, and the GA3, and that they were negatively correlated with the leaf Na content, PPO, CAT, ABA, MDA, and Tr. It might be concluded that nanoelement (n-K and n-Si) and biochar applications are a promising method to enhance the plant growth and crop productivity of potato plants grown under salinity conditions.

scholarly journals Seed Antioxidants Interplay with Drought Stress Tolerance Indices in Chilli (Capsicum annuum L) Seedlings

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
U. Lakshmi Sahitya ◽  
M. S. R. Krishna ◽  
R. Sri Deepthi ◽  
G. Shiva Prasad ◽  
D. Peda Kasim
Keyword(s):  
Water Stress ◽  
Drought Tolerance ◽  
Water Content ◽  
Stress Tolerance ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Field Capacity ◽  
Water Regimes ◽  
Relative Water ◽  
Tolerance Indices

Altering climatic conditions and water stress drastically affects the chilli crop yield. In this scenario we adapted a strategic approach for screening of elite chilli genotypes, by exploring role of seed antioxidants in stress tolerance during vegetative phase. A total of 20 chilli genotypes’ seed antioxidant potential and its effect on water stress tolerance were studied at three water regimes, namely, control (100% Field Capacity), moderate (80% Field Capacity), and severe (60% Field Capacity) stress conditions. Drought tolerance traits relative water content, chlorophyll content, and activities of superoxide dismutase and catalase enzymes were measured. A strong correlation was observed between seed antioxidants and water stress tolerant traits in seedlings. Genotypes KCa-5, KCa-6, and KCa-10 showed low quantity of H2O2 and Malondialdehyde in seeds and maintained high membrane integrity and chlorophyll content in seedlings. High content of proline in KCa-5, KCa-7, and KCa-10 seeds retained high relative water content at seedling stage under severe water stress. Present work reveals genotypic differences of hot pepper to different water regimes. Based on Principal Component Analysis (PCA) of seed antioxidant variables and drought tolerance indices twenty genotypes segregated into three clusters, namely, drought tolerant and susceptible and moderately tolerant.

scholarly journals IDENTIFIKASI KARAKTER MORFO-FISIOLOGI PENENTU PRODUKTIVITAS JAMBU METE (Anacardium occidentale)

2020 ◽  
Vol 19 (4) ◽  
pp. 186
Author(s):  
IRENG DARWATI ◽  
ROSITA S.M. ◽  
SETIAWAN SETIAWAN ◽  
HERA NURHAYATI
Keyword(s):  
Water Content ◽  
Leaf Area ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Age Groups ◽  
Morphological Characteristics ◽  
Leaf Thickness ◽  
Anacardium Occidentale ◽  
Relative Water ◽  
Physiological Characters

<p>ABSTRAK<br />Produktivitas jambu mete di Indonesia masih rendah karena<br />budidayanya yang masih sederhana dan belum menggunakan bahan<br />tanaman unggul. Hasil tanaman ditentukan oleh beberapa karakter morfo-<br />fisiologi seperti luas dan tebal daun, jumlah stomata, laju fotosintesis,<br />kandungan klorofil, relative water content (RWC), dan potential osmotik<br />daun. Penelitian ini bertujuan untuk mengetahui karakter morfo-fisiologi<br />yang menentukan hasil jambu mete. Penelitian dilaksanakan di Kebun<br />Percobaan Cikampek dan Laboratorium, Balittro, Bogor, Jawa Barat, pada<br />bulan Januari-Desember 2012. Bahan tanaman yang digunakan adalah dua<br />varietas jambu mete produksi tinggi (B02 dan GG1) dan tiga varietas<br />produksi rendah (Laode Gani, Laode Kase, dan Laura). Tanaman<br />dibedakan dalam tiga kelompok umur (5, 8, dan 17 tahun). Parameter yang<br />diamati karakter morfologi seperti ketebalan daun (μm), luas daun (cm 2 ),<br />produksi gelondong (kg/tanaman), berat kering daun (g/daun), anatomi<br />(jumlah stomata), dan parameter fisiologi meliputi kandungan klorofil<br />(a+b) (%), laju fotosintesis (μmol CO 2  m -2 s -1 ), karbohidrat daun (%),<br />potensial air daun (bar), dan Relative Water Content (RWC) (%). Untuk<br />mengetahui parameter morfo-fisiologi yang berpengaruh nyata terhadap<br />produksi dilakukan uji komponen penentu hasil, yaitu peubah morfo-<br />fisiologi terhadap produksi gelondong mete. Hasil penelitian menunjukkan<br />peubah klorofil tanaman jambu mete berpengaruh nyata antar aksesi. Hasil<br />analisis antar peubah morfo-fisiologi dan komponen hasil menunjukkan<br />hanya peubah klorofil yang berkorelasi positif terhadap hasil gelondong<br />aksesi jambu mete yang berproduktivitas tinggi. Fungsi hasil digambarkan<br />dalam formula ln hasil gelondong = 2,01 + 11,0 ln klorofil , sedangkan pada aksesi<br />yang produktivitasnya rendah peubah klorofil tidak berpengaruh nyata.<br />Fungsi ini mengindikasikan apabila kandungan klorofil meningkat 1%<br />maka produksi gelondong akan meningkat 11%.<br />Kata kunci: Anacardium occidentale, karakter morfo-fisiologi, produksi</p><p>ABSTRACT<br />Cashew productivity in Indonesia is still low, due to improper<br />cultivation technique and the use of unimproved varieties. Crop yield is<br />determined by several morpho-physiological characters such as leaf area,<br />leaf thickness, the number of stomata, the rate of photosynthesis,<br />chlorophyll content, relative water content (RWC), and leaf osmotic<br />potential. This study aimed to obtain morpho-physiological characters<br />affecting cashew production. The research was conducted in the Cikampek<br />Experimental Station and in the Laboratory, ISMECRI, Bogor, West Java,<br />from January to December 2012. The plant material used were two<br />selected high-yielding varieties (B02 and GG1) and three low-yielding<br />varieties (Laode Gani, Laode Kase, and Laura). The plants were divided<br />into three age groups (5, 8, and 17 years). Parameters measured were<br />morphological characteristics such as leaf thickness (µm), leaf area (cm 2 ),<br />leaf dry weight (g/leaf), and nut yield (kg/tree), as well as anatomical<br />characteristic such as the number of stomata, and physiological parameters<br />consisted of chlorophyll content (a+b) (%), photosynthetic rate (µmol CO2<br />m -2 s -1 ), leaf carbohydrate content (%), leaf water potential (bar) and<br />relative water content (RWC) (%). Data were analysed using component<br />test to find morpho-physiological characteristics which was affecting nut<br />yield. The result showed chlorophyll content was significantly affected nut<br />yield among varieties as shown in the following function: ln nut yield = 2.01 +<br />11.0 ln chlorophyll . The result indicated that when the chlorophyll content<br />increased 1% the nut yield would increase 11%.<br />Keywords: Anacardium occidentale, morpho-physiological characteris-<br />tic, production</p>

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