scholarly journals Graphene Oxide-Assisted Promotion of Plant Growth and Stability

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 758 ◽  
Author(s):  
Sunho Park ◽  
Kyoung Soon Choi ◽  
Sujin Kim ◽  
Yonghyun Gwon ◽  
Jangho Kim
Keyword(s):  
Arabidopsis Thaliana ◽  
Graphene Oxide ◽  
Plant Growth ◽  
Growth Medium ◽  
Fruit Ripening ◽  
Sugar Content ◽  
Flower Buds ◽  
Ripening Process ◽  
Number Of Leaves ◽  
Positive Effect

The control and promotion of plant and crop growth are important challenges globally. In this study, we have developed a nanomaterial-assisted bionic strategy for accelerating plant growth. Although nanomaterials have been shown to be toxic to plants, we demonstrate herein that graphene oxide can be used as a regulator tool for enhancing plant growth and stability. Graphene oxide was added to the growth medium of Arabidopsis thaliana L. as well as injected into the stem of the watermelon plant. We showed that with an appropriate amount provided, graphene oxide had a positive effect on plant growth in terms of increasing the length of roots, the area of leaves, the number of leaves, and the formation of flower buds. In addition, graphene oxide affected the watermelon ripeness, increasing the perimeter and sugar content of the fruit. We believe that graphene oxide may be used as a strategy for enabling the acceleration of both plant growth and the fruit ripening process.

scholarly journals Influence du nombre de feuilles et de la répartition des fruits sur la production et la qualité des pêches

1992 ◽  
Vol 72 (2) ◽  
pp. 517-525 ◽  
Author(s):  
Michel Génard
Keyword(s):  
Malic Acid ◽  
Acid Content ◽  
Yield Components ◽  
Prunus Persica ◽  
Sugar Content ◽  
Flower Buds ◽  
Fruit Abscission ◽  
High Sugar ◽  
Number Of Leaves ◽  
The Mean

We compared the production of flower buds, fruit abscission, fruit growth and quality according to the fruit distribution on limbs (regular or not) and to the number of leaves per fruit (0, 1 or 2 shoots per fruit). Only one limb per tree was treated from a sample of 15 trees. The yield per limb and the mean growth of fruits were lowest, and the fruit abscission was highest on limbs without leaves. On leafy limbs, the yield components and the number of flower buds were not significantly affected by changes in the number of leaves per fruit or by the fruit distribution. Fruits on limbs without leaves had a lot of purple color, a greater firmness and a low sugar content. Fruits on limbs with many leaves before harvest had high sugar and malic acid content, as well as yellow and orange color.Key words: Yield components, quality, leaf, fruit, distribution, Prunus persica L.

scholarly journals Efeito do Trichoderma harzianum e Trichoderma longibrachiatum no desenvolvimento de diferentes mudas de espécies florestais

2021 ◽  
Vol 4 (4) ◽  
pp. 74-83
Author(s):  
Pablo Israel Álvarez Romero ◽  
◽  
Marylin Andrea Iza Cruz ◽  
Juan Hugo Rodriguez Guerra ◽  
Ana Francisca Tibúrcia Amorim Ferreira e Ferreira ◽  
...  
Keyword(s):  
Plant Growth ◽  
Trichoderma Harzianum ◽  
Good Alternative ◽  
Fresh Weight ◽  
Growth Promoters ◽  
Trichoderma Species ◽  
Plant Growth Promoters ◽  
Number Of Leaves ◽  
Forest Plants ◽  
Positive Effect

The effect of Trichoderma harzianum and T. longibrachiatum in promoting plant growth was studied in acacia, alder, cypress, and eucalyptus. As variables associated with the growth and development of forest plants, the height, stem and root length, number of leaves and roots and fresh weight of the plants were evaluated. The two Trichoderma species used had a positive effect, improving most of the variables evaluated in all the forest species studied, demonstrating that this genus of fungi is a good alternative as plant growth promoters.

scholarly journals Cold Storage Period of Bulbs Influences Their Sugar Contents and Post-Storage Growth and Flowering in Lilium Oriental Hybrids

Agriculture ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1080
Author(s):  
Jiseon Kim ◽  
Wook Oh
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Shoot Growth ◽  
Sugar Content ◽  
Storage Period ◽  
Cut Flowers ◽  
Flower Buds ◽  
Total Sugar Content ◽  
Flower Diameter ◽  
Lilium Oriental Hybrids

This study was carried out to investigate the changes in internal shoot growth, total and reducing sugar content, plant growth, and flowering characteristics after cold-stored bulbs of Lilium Oriental Hybrids are planted. Bulbs of Lilium Oriental Hybrids ‘Le Reve’, ‘Sorbonne’, and ‘Siberia’ were harvested at the end of November, cleaned, treated with fungicides, conditioned for 30 days at 4 °C, and cold-stored for 30 to 120 days at 0 °C. Plant height, fresh and dry weights, leaf numbers and area, chlorophyll content (SPAD index), days to flowering, number of flower buds, and flower diameter were measured when the cut flowers were harvested. In all cultivars, the shoot lengths in the bulbs increased as the storage period increased. As the storage period was extended, the fructose and glucose contents increased, whereas sucrose content decreased. The total sugar content increased during the early storage period and decreased subsequently. Plant height, fresh and dry weights of cut flowers showed a decreasing trend as the storage period increased. Flower diameter generally decreased with increasing storage period but varied among cultivars. These results indicated that more storage carbohydrates in bulbs were consumed as the storage period increased, and thus, the subsequent plant growth and flowering were negatively affected.

Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

2020 ◽  
Vol 13 (2) ◽  
pp. 83-92 ◽  
Author(s):  
A. Adam
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Dry Weight ◽  
Cochliobolus Sativus ◽  
Resistance Level ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

Cyclamen Leaf Unfolding Rate in Response to Temperature

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 447d-447
Author(s):  
Meriam Karlsson ◽  
Jeffrey Werner
Keyword(s):  
Day Length ◽  
Leaf Number ◽  
Cyclamen Persicum ◽  
Flower Buds ◽  
Flower Bud ◽  
Leaf Unfolding ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Growth Chambers ◽  
Response To Temperature

Nine-week-old plants of Cyclamen persicum `Miracle Salmon' were transplanted into 10-cm pots and placed in growth chambers at 8, 12, 16, 20, or 24 °C. The irradiance was 10 mol/day per m2 during a 16-h day length. After 8 weeks, the temperature was changed to 16 °C for all plants. Expanded leaves (1 cm or larger) were counted at weekly intervals for each plant. The rate of leaf unfolding increased with temperature to 20 °C. The fastest rate at 20 °C was 0.34 ± 0.05 leaf/day. Flower buds were visible 55 ± 7 days from start of temperature treatments (118 days from seeding) for the plants grown at 12, 16, or 20 °C. Flower buds appeared 60 ± 6.9 days from initiation of treatments for plants grown at 24 °C and 93 ± 8.9 days for cyclamens grown at 8 °C. Although there was no significant difference in rate of flower bud appearance for cyclamens grown at 12, 16, or 20 °C, the number of leaves, flowers, and flower buds varied significantly among all temperature treatments. Leaf number at flowering increased from 38 ± 4.7 for plants at 12 °C to 77 ± 8.3 at 24 °C. Flowers and flower buds increased from 18 ± 2.9 to 52 ± 11.0 as temperature increased from 12 to 24 °C. Plants grown at 8 °C had on average 6 ± 2 visible flower buds, but no open flowers at termination of the study (128 days from start of treatments).

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