scholarly journals Water Deficit and Recovery-Induced Changes in Growth, Photosynthetic Characteristics, Antioxidant Enzymes and Yield of Two Tartary Buckwheat Genotypes

2021 ◽  
Vol 25 (02) ◽  
pp. 483-491
Author(s):  
Yan Wan
Keyword(s):  
Water Content ◽  
Plant Height ◽  
Water Deficit ◽  
Tartary Buckwheat ◽  
Seed Number ◽  
Branch Number ◽  
Node Number ◽  
Stem Node ◽  
Shoot Ratio ◽  
Root To Shoot Ratio

Tartary buckwheat (Fagopyrum tataricum) is an important food crop that is widely adaptable to hostile environments. In this study the responses of two Tartary buckwheat genotypes: drought-susceptible Chuanqiao No. 1 (CQ) and drought-tolerant Jingqiao No. 2 (JQ) in terms of morphology, photosynthesis, physiology and yield to a progressive water deficit and recovery treatment (WD-R) were evaluated. Plants in the well-watered (WW) treatment were watered throughout the experiment. Compared to the WW treatment, water deficit in the WD-R treatment caused decreases in plant height, stem diameter, branch number, stem node number, biomass, seed number, soil water content (SWC), leaf relative water content (RWC), net photosynthesis rate (Pn), intercellular CO2 concentration, stomatal conductance (Gs), transpiration rate (Tr) and Fv/Fm in both CQ and JQ plants. Leaf wilting, malondialdehyde content, superoxide dismutase activity, peroxidase activity, initial fluorescence (F0) and root-to-shoot ratio were significantly increased under water stress in the WD-R treatment. Under the WD-R treatment, compared to CQ, JQ maintained higher RWC, SWC, Pn, Gs, WUE, Fv/Fm, plant height, branch number, stem node number, root biomass, stem biomass, leaf biomass, total biomass, root-to-shoot ratio, seed number per plant, and yield, but a lower Tr and F0. By correlation analysis, Gs was positively correlated with leaf RWC and SWC. These differential growth indexes, biochemical traits and physiological responses might be useful for understanding drought-tolerance genotypes that can grow under water-deficit conditions with minimum yield loss. © 2021 Friends Science Publishers

scholarly journals Foliar Sprays of Citric Acid and Malic Acid Modify Growth, Flowering, and Root to Shoot Ratio ofGazania(Gazania rigensL.): A Comparative Analysis by ANOVA and Structural Equations Modeling

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Majid Talebi ◽  
Ebrahim Hadavi ◽  
Nima Jaafari
Keyword(s):  
Citric Acid ◽  
Plant Height ◽  
Malic Acid ◽  
Foliar Application ◽  
Structural Equations ◽  
Control Treatment ◽  
Fresh Weight ◽  
Structural Equations Modeling ◽  
Shoot Ratio ◽  
Root To Shoot Ratio

Foliar application of two levels of citric acid and malic acid (100 or 300 mg L−1) was investigated on flower stem height, plant height, flower performance and yield indices (fresh yield, dry yield and root to shoot ratio) ofGazania. Distilled water was applied as control treatment. Multivariate analysis revealed that while the experimental treatments had no significant effect on fresh weight and the flower count, the plant dry weight was significantly increased by 300 mg L−1malic acid. Citric acid at 100 and 300 mg L−1and 300 mg L−1malic acid increased the root fresh weight significantly. Both the plant height and peduncle length were significantly increased in all applied levels of citric acid and malic acid. The display time of flowers on the plant increased in all treatments compared to control treatment. The root to shoot ratio was increased significantly in 300 mg L−1citric acid compared to all other treatments. These findings confirm earlier reports that citric acid and malic acid as environmentally sound chemicals are effective on various aspects of growth and development of crops. Structural equations modeling is used in parallel to ANOVA to conclude the factor effects and the possible path of effects.

scholarly journals Effects of Rooting Volume Restriction on the Growth and Carbohydrate Concentration in Tomato Plants

1998 ◽  
Vol 123 (4) ◽  
pp. 581-585 ◽  
Author(s):  
Takashi Nishizawa ◽  
Kenji Saito
Keyword(s):  
Plant Height ◽  
Soluble Sugar ◽  
Dry Mass ◽  
Hydroponic Culture ◽  
Soil Culture ◽  
Tomato Plants ◽  
Shoot Ratio ◽  
Root To Shoot Ratio ◽  
Soluble Sugar And Starch ◽  
Mass Accumulation

Tomato plants (Lycopersicon esculentum Mill `Ougata-fukuju' and `Korokoro') were grown in a soil or a hydroponic culture to study effects of rooting volume restriction on plant growth and carbohydrate concentrations. In soil culture, leaf lengths decreased linearly as container volume decreased, while plant height did not decrease linearly, irrespective of fruiting. The root to shoot ratio decreased in smaller volume containers, irrespective of fruiting, because dry mass accumulation in the stem and leaves was relatively less inhibited than that in the roots. Total plant dry mass did not differ between fruiting and deblossomed plants, irrespective of container volume. In hydroponic culture, plant height in small containers (37 cm3) was similar to that in large containers (2024 or 4818 cm3). The root to shoot ratio of the plants grown in small containers was lower than that of the plants grown in large containers, mainly due to less inhibition of the dry mass accumulation in the stem than in the leaves. When small containers were almost filled with roots (28 days after transplanting), soluble sugar and starch concentrations in leaves became ≈2-fold higher in the plants grown in small than in those grown in large containers. At the end of experiment (42 days after transplanting), sucrose and starch concentrations in the stem were higher in plants grown in small than in those grown in large containers. However, soluble sugar and starch concentrations in the leaves did not differ between treatments.

scholarly journals USE OF GLIRICIDIA-ENRICHED LIQUID ORGANIC FERTILIZER FOR PRODUCTION OF CAISIM (Brassica juncea L.)

2019 ◽  
Vol 17 (1) ◽  
pp. 1
Author(s):  
Alakhyar Alakhyar ◽  
Fahrurrozi Fahrurrozi ◽  
Widodo Widodo ◽  
Dia Novita Sari
Keyword(s):  
Water Content ◽  
Plant Root ◽  
Organic Fertilizer ◽  
Gliricidia Sepium ◽  
Fresh Weight ◽  
Shoot Fresh Weight ◽  
Shoot Ratio ◽  
Root To Shoot Ratio ◽  
Leaf Greenness

Green biomass is one of major nutrient source and determines the quality of liquid organic fertilizer (LOF), including Gliricidia sepium (Jacq.) Kunth ex Walp. An experiment was conducted to study the effects of Gliricidia-enriched LOF on growth and yields of caisim, arranged in randomized complete design with three replicates. Treatments consisted of six LOF concentrations, 0%, 20%, 40%, 60%, 80% and 100%. Results indicated that concentration of gliricidia-LOF significantly influenced leaf greenness and shoot fresh weight, but not root to shoot ratio and shoot water content.  Concentrations of gliricidia-LOF increased leaf greenness and shoot fresh weight of caisim. The optimum concentration was 70.85% to produce weight of 73 grams caisim per plant. Root to shoot ratio was not significantly different. Although treatments did not affect shoot water content, all caisim water content was on average above 90 %. 

scholarly journals Tree size and climatic water deficit control root to shoot ratio in individual trees globally

2017 ◽  
Vol 217 (1) ◽  
pp. 8-11 ◽  
Author(s):  
Alicia Ledo ◽  
Keryn I. Paul ◽  
David F. R. P. Burslem ◽  
John J. Ewel ◽  
Craig Barton ◽  
...  
Keyword(s):  
Water Deficit ◽  
Tree Size ◽  
Shoot Ratio ◽  
Climatic Water Deficit ◽  
Control Root ◽  
Root To Shoot Ratio ◽  
Individual Trees

Influence of some quantitative structural characteristics of introduced soybean (Glycine max (L.) Merr.) accessions on seed productivity in irrigated conditions in the South of Ukraine

2018 ◽  
pp. 11-18
Author(s):  
R.A. Vozhehova ◽  
V.O. Borovik ◽  
V.V. Klubuk ◽  
T.Yu. Marchenko
Keyword(s):  
Seed Weight ◽  
High Performance ◽  
Structural Characteristics ◽  
Vegetation Period ◽  
Plant Performance ◽  
Seed Number ◽  
Branch Number ◽  
Node Number ◽  
Economically Valuable Traits ◽  
Pod Number

Goal. To establish correlations between the seed weight and quantitative characteristics of performance for new introduced soybean accessions.Results and discussion. The results of evaluating the following introduced accessions for a set of economically valuable traits are presented in the article: Saska, 01006; Sigalia, 01020 (AUT) Connor, 00549; Sandra, 00679; Madison, 01011; OAC Drayton, 01014; OAC Wallace, 01018; Kyoto, 01012; Silesiya 01010 (CAN) Cordoba, 01020; Lissabon, 01007 (AUS) Sultana, 01008; Sinara, 01005 (FRA). Among all the accessions under investigation, variety Silesiya 01010 (CAN) was distinguished by ultra-early ripening. The duration of its vegetation period was 98 days. The results of studying the introduced accessions allowed us to single out a source, variety Sultana, 01008 (FRA), by exceptionally high performance, as its seed weight per plant was 39.4 g or the seed number per plant was 230.0. There were correlations between the main trait of the plant performance, the seed weight per plant, and the traits of "productive node number per branch", "productive node number per plant", "pod number per branch," "pod number per plant", and "seed number per plant" in soybean varieties (Kyoto, 01012 (CAN) Sinara, 01005, Sultana, 01008 (FRA) and Cordoba, 01020 (AUS), which had the best yields. It was established that genotypes could be selected by these traits to form a variety model.Conclusions. Basing on the correlations, we found that the plant height, the lowest pod height, the productive node number per branch, the additional branch number per plant, the pod number per plant, and the seed number per plant had the most significant direct effects on the variability of the main performance trait - the seed weight per plant.

Evolutionary QTL-allele changes in main stem node number among geographic and seasonal subpopulations of Chinese cultivated soybeans

2021 ◽  
Author(s):  
Abbas Muhammad Fahim ◽  
Fangdong Liu ◽  
Jianbo He ◽  
Wubing Wang ◽  
Guangnan Xing ◽  
...  
Keyword(s):  
Main Stem ◽  
Node Number ◽  
Stem Node

scholarly journals Influence of Atomization Nozzles and Spraying Intervals on Growth, Biomass Yield, and Nutrient Uptake of Butter-Head Lettuce under Aeroponics System

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 97
Author(s):  
Mazhar H. Tunio ◽  
Jianmin Gao ◽  
Imran A. Lakhiar ◽  
Kashif A. Solangi ◽  
Waqar A. Qureshi ◽  
...  
Keyword(s):  
Root Growth ◽  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Biomass Yield ◽  
Chemical Properties ◽  
Cultivated Plants ◽  
Growth Ratio ◽  
Shoot Ratio ◽  
Droplet Sizes ◽  
Root To Shoot Ratio

The atomized nutrient solution droplet sizes and spraying intervals can impact the chemical properties of the nutrient solution, biomass yield, root-to-shoot ratio and nutrient uptake of aeroponically cultivated plants. In this study, four different nozzles having droplet sizes N1 = 11.24, N2 = 26.35, N3 = 17.38 and N4 = 4.89 µm were selected and misted at three nutrient solution spraying intervals of 30, 45 and 60 min, with a 5 min spraying time. The measured parameters were power of hydrogen (pH) and electrical conductivity (EC) values of the nutrient solution, shoot and root growth, ratio of roots to shoots (fresh and dry), biomass yield and nutrient uptake. The results indicated that the N1 presented significantly lower changes in chemical properties than those of N2, N3 and N4, resulting in stable lateral root growth and increased biomass yield. Also, the root-to-shoot ratio significantly increased with increasing spraying interval using N1 and N4 nozzles. The N1 nozzle also revealed a significant effect on the phosphorous, potassium and magnesium uptake by the plants misted at proposed nutrient solution spraying intervals. However, the ultrasonic nozzle showed a nonsignificant effect on all measured parameters with respect to spraying intervals. In the last, this research experiment validates the applicability of air-assisted nozzle (N1) misting at a 30-min spraying interval and 5 min of spraying time for the cultivation of butter-head lettuce in aeroponic systems.

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