scholarly journals The response of the sugar beet (Beta vulgaris L.ssp. vulgaris var. altissima Döll) genotypes to heat stress in initial growth stage

2020 ◽  
Vol 115 (1) ◽  
pp. 39
Author(s):  
Mohammad MALMIR ◽  
Rahim MOHAMMADIAN ◽  
Ali SOROOSHZADEH ◽  
Ali MOKHTASSI-BIDGOLI ◽  
Somayeh EHSANFAR
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Dry Mass ◽  
Seed Vigor ◽  
Growth Stages ◽  
Initial Growth ◽  
Tropical Regions ◽  
Greenhouse Experiments ◽  
Vigor Index ◽  
Increasing Temperature

<p>The continuous trend of global warming and increasing interest toward cultivating sugar beet (Beta vulgaris L. ssp. vulgaris var. altissima Döll) in tropical regions led us to conduct this study to investigate the effect of high temperature on sugar beet at initial growth stages. Thirty one genotypes were incubated at two temperatures (20 °C and 30 °C) in laboratory for germination test. The same genotypes were assessed for physiological parameters at 30 °C in greenhouse, too. Increasing temperature decreased germination indices with a high variability among the genotypes. Seed vigor index and seminal root length were decreased higher than other indices. The genotypes with higher greenness index had higher total dry mass, leaf area and leaf temperature depression (LTD), and those with higher seed vigor index indicated great quantum efficiency of PSII (Fv/Fm) values. ‘S1-92521’ produced high records in both laboratory and greenhouse experiments. Although ‘S1-92521’ showed good tolerance in both laboratory and greenhouse experiments, totally, sugar beet genotypes had different performance at two experiments. According to the results, seed vigor index could be used as a screening tool in laboratory, and LTD and Fv/Fm were considered as good criteria for screening heat-tolerant genotypes in greenhouse.</p>

Sucrose Metabolism Enzymes Affect Sucrose Content Rather than Root Weight in Sugar Beet (Beta vulgaris) at Different Growth Stages

Sugar Tech ◽  
2019 ◽  
Vol 22 (3) ◽  
pp. 504-517 ◽  
Author(s):  
Ke Shao ◽  
Zhenqing Bai ◽  
Manhong Li ◽  
Chao Yu ◽  
Jinwang Shao ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Sucrose Metabolism ◽  
Growth Stages ◽  
Root Weight ◽  
Sucrose Content ◽  
Metabolism Enzymes ◽  
Different Growth Stages

scholarly journals Shade avoidance cues reduce Beta vulgaris growth

Weed Science ◽  
2019 ◽  
Vol 67 (3) ◽  
pp. 311-317 ◽  
Author(s):  
Thomas J. Schambow ◽  
Albert T. Adjesiwor ◽  
Louise Lorent ◽  
Andrew R. Kniss
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Root Biomass ◽  
Resource Competition ◽  
Bare Soil ◽  
Leaf Biomass ◽  
Shade Avoidance ◽  
Plastic Mulch ◽  
Greenhouse Experiments ◽  
Reflected Light

AbstractField and greenhouse experiments were conducted from 2013 to 2015 at the University of Wyoming to evaluate the response of Beta vulgaris (L.) to reflected-light quality. Large-pail field studies included a factorial arrangement of three varieties of B. vulgaris (sugar beet, table beet, and Swiss chard) and reflected-light treatments (using either colored plastic mulch, grass, or bare-soil controls). Greenhouse studies included sugar beet as influenced by either grass or soil surroundings. In all studies, grass was grown in separate containers from B. vulgaris, so there was no root interaction. Grass was clipped regularly to prevent shading and competition for sunlight. Reflected light from different-colored plastic mulches (red, blue, green, black, clear) did not affect B. vulgaris growth. However, reflected light from the grass reduced the number of leaves in all B. vulgaris varieties such that there were 10 to 14 fewer leaves in B. vulgaris surrounded by grass compared with the soil treatment at 90 d after planting in the field study. Shade avoidance cues from surrounding grass reduced B. vulgaris total leaf area by 49% to 66%, leaf biomass by 21% to 30%, and root biomass by 70% to 72%. Similar results were observed in greenhouse experiments, where the grass treatment reduced sugar beet leaf biomass by 48% to 57% and root biomass by 35% to 64%. Shade avoidance cues have the potential to significantly reduce B. vulgaris yield, even in the absence of direct resource competition from weeds.

scholarly journals GENETIC DIVERSITY AMONG Calotropis procera (Aiton) WT Aiton GENOTYPES ACCORDING TO SEED PHYSIOLOGICAL QUALITY

2017 ◽  
Vol 30 (4) ◽  
pp. 912-919 ◽  
Author(s):  
ISAIAS VITORINO BATISTA DE ALMEIDA ◽  
JEAN PIERRE CORDEIRO RAMOS ◽  
WELLISON FILGUEIRAS DUTRA ◽  
RISELANE DE LUCENA ALCÂNTARA BRUNO ◽  
EDNA URSULINO ALVES
Keyword(s):  
Genetic Diversity ◽  
Dry Mass ◽  
Seed Vigor ◽  
Calotropis Procera ◽  
Cultivation System ◽  
Randomized Design ◽  
Vigor Index ◽  
Germination Characteristics ◽  
Germination Speed ◽  
Physiological Quality

ABSTRACT Characterizing genetic diversity based on evaluations involving germination and seed vigor, is a fundamental stage in starting the development of a cultivation system for Calotropis procera. Thus, this study aimed to estimate genetic diversity among 35 C. procera genotypes based on germination and vigor of seeds stored for 1 year. The genotypes, which originated from areas in Paraíba (Brazil), where they occur naturally, were collected and stored in March 2014. In order to evaluate the physiological potential of the seeds, two experiments were conducted between March and April 2015. The first involved a propagation test conducted in a germination chamber, while the second involved an emergence test in washed sand, performed in polyethylene trays in a screened environment under uncontrolled conditions. In both experiments, an entirely randomized design was used, with four repetitions of 25 seeds per genotype. The characteristics evaluated were germination, average daily germination, daily germination speed, the speed of germination index, the plantlet vigor index, emergence, the speed of emergence index, total length, and total dry mass. The results showed that genetic variability exists among the C. procera genotypes for variables involving germination and vigor of seeds stored for 1 year. Also, emergence, total dry plantlet mass, and germination characteristics contribute most to the genetic divergence among C. procera genotypes.

scholarly journals Effect of Different Salt Concentrations (NaCl) on Seed Germination and Seedling Growth of Tomato cv. BINA Tomato-10

2020 ◽  
pp. 38-44
Author(s):  
Md. Rofekuggaman ◽  
Khadezatul Kubra ◽  
Shreef Mahmood
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Dry Mass ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Control Treatment ◽  
High Concentration ◽  
Vigor Index ◽  
Fresh And Dry Mass ◽  
Experimental Treatments

The experiment was carried out at the Department of Horticulture, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh to evaluate the rate of seeds germination and early seedlings growth of tomato under different levels of salinity. Experimental treatments consisted on five levels of natrium chloride (NaCl) (0, 25, 50, 100 and 150 mM). Seeds of tomato cv. BINA Tomato-10 were placed on Petri dishes for germination. Data on germination percentage, germination coefficient, length of radicle and plumule, fresh and dry mass of radicle and plumule, seed vigor index were recorded at different days after sowing. NaCl solutions significantly affected seed germination and growth of germinated seedlings. At 11 DAS, the highest seed germination (94.67%), maximum germination coefficient (15.91), longest radicle (7.61 cm) and plumule (5.77 cm), maximum seed vigor index (1266.34), highest fresh and dry mass of radicle (12.5 mg and 1.63 mg) and plumule (23.95 mg and 1.02 mg) were recorded in control treatment. High concentration of salt solution (150 mM NaCl) found to be detrimental for seed germination and seedling growth. BINA Tomato-10 can be recommended for the area having moderate level of salinity.

Plant regeneration from protoplasts of sugar beet (Beta vulgaris)

1995 ◽  
Vol 94 (2) ◽  
pp. 342-350 ◽  
Author(s):  
Steffen Lenzner ◽  
Kurt Zoglauer ◽  
Otto Schieder
Keyword(s):  
Plant Regeneration ◽  
Sugar Beet ◽  
Beta Vulgaris

Germination and initial growth of triticale seeds under stationary magnetic fields

2014 ◽  
Vol 2 (2) ◽  
pp. 72-79 ◽  
Author(s):  
Mercedes Florez ◽  
Elvira Martinez ◽  
Victoria Carbonell
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Seed Vigor ◽  
Initial Growth ◽  
Practical Application ◽  
Biochemical Processes ◽  
Mean Germination Time ◽  
Nutrition Value ◽  
The Mean ◽  
Growth Of Seedlings

The main objective of this study is to determine the effects of 125 mT and 250mT magnetic treatment on the germination and initial growth of triticale seeds. This objective has a practical application in agriculture science: early growth of triticale. An increase in the percentage and rate of germination of seeds and a stimulation of growth of seedlings as positive response to magnetic field treatment in rice, wheat, maize and barley seeds have been found in previous studies. Germination tests were carried out under laboratory conditions by exposing triticale seeds to magnetic field for different times. The effect was studied by exposure of seeds prior sowing. The mean germination time were reduced for all the magnetic treatments applied. Most significant differences were obtained for time of exposure of 1 and 24 hours and maximum reductions was 12%. Furthermore, seedlings from magnetically treated seeds grew taller than control. The longest mean total length was obtained from seedlings exposed to 125 and 250 mT for 24 hours. External magnetic fields are assumed to enhance seed vigor by influencing the biochemical processes by stimulating activity of proteins and enzymes. Numerous studies suggested that magnetic field increases ions uptake and consequently improves nutrition value.

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