Antagonistic Effect of Pseudomonas spp on Pythium aphanidermatum and on Plant Growth of Chilli. (Capsicum annuum L.)

The influence of plant-growth-promoting bacteria (Azospirillum brasilense and Pantoea dispersa) on sweet pepper plants (Capsicum annuum L.) under limited N supply was studied. Inoculation did not affect leaf CO2 assimilation, Ci/Ca (the ratio of the intercellular to the ambient CO2 concentration), concentration of chlorophylls, chlorophyll fluorescence (maximum quantum efficiency of PSII) or SPAD readings. Total plant dry weight was significantly reduced in both inoculated and non-inoculated plants when the N supply was reduced from 12 (control) to 7 mM, whilst the NO3− and total-N concentrations in the leaves were not significantly affected by inoculation. Inoculation did not affect marketable fruit yield or the pigments (chlorophylls, lycopene and β-carotene) and carbohydrate (sucrose, glucose and fructose) contents in the fruits but flavonoids and anthocyanins were increased significantly by the addition of the bacteria, relative to non-inoculated plants under limited N supply. Key words: Plant-growth-promoting bacteria, Capsicum annuum L., soilless, photosynthesis, chlorophylls, flavonoids

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MORPHOLOGY AND YIELD OF PAPRIKA PEPPER IN RESPONSE TO METHOD OF STAND ESTABLISHMENT

HortScience ◽

10.21273/hortsci.28.4.275h ◽

1993 ◽

Vol 28 (4) ◽

pp. 275H-275

Author(s):

Brian A. Kahn ◽

James R. Cooksey ◽

James E. Motes

Keyword(s):

Plant Growth ◽

Capsicum Annuum ◽

Seed Treatment ◽

Plant Morphology ◽

Fruit Yield ◽

Direct Seeding ◽

Stand Establishment ◽

Capsicum Annuum L ◽

Marketable Fruit

Raw seed, primed seed, and transplants were compared for effects on stand establishment, plant morphology, and yield of paprika pepper (Capsicum annuum L.) Raw seed seemed satisfactory for stand establishment, although primed seed had the potential to provide better initial stands. When populations were equalized, there were few differences in plant growth, plant morphology, or fruit yield attributed to seed treatment. Morphology of plants established by direct seeding generally was favorable for mechanical harvest. Use of transplants did not result in higher marketable fruit yields than direct seeding in two out of three years. When compared to plants established by direct seeding, three trends were consistent across all three years for plants established by transplanting: a) they were more massive: b) they had larger vertical fruiting planes: and c) they had more branches. These traits would increase the difficulty of mechanical harvest and would create the potential for more trash in the harvested product. Thus, transplanting is not recommended for stand establishment of paprika intended for mechanical harvest.

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Effect of plant growth regulators on growth and yield of chili (Capsicum annuum L.)

Journal of Phytology ◽

10.25081/jp.2020.v12.6466 ◽

2020 ◽

pp. 117-120

Author(s):

. Anolisa ◽

Md. Al-Imran, Riyad Hossen ◽

A.T.M. Rafiqul Islam ◽

Subroto Kumar Das

Keyword(s):

Plant Growth ◽

Capsicum Annuum ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Control Plant ◽

Growth And Yield ◽

Local Market ◽

Optimum Level ◽

Capsicum Annuum L ◽

Significant Difference

Chili (Capsicum annuum L.) is an important food additive with high medicinal value. To investigate the effect of plant growth regulators on chili, seedlings of chili were collected from the local market and grown in the experimental field of the University of Barishal, Bangladesh. Foliar spray of different degrees of plant growth regulators, Gibberellin (50 mg/l, 100 mg/l, 250mg/l, 350 mg/l GA3) and Cytokinin (50 mg/l, 100 mg/l, 250mg/l, 350mg/l Kn) were applied from 15 days of germination. Data on different growth and yield parameters were collected and analyzed statistically. The result reveals that there is a significant difference in growth and yield related traits in chili due to the application of plant growth regulators. An optimum level of PGRs application shows better performance compare with control. Plant height particularly influenced by GA3 whereas other attributes like the number of leaves, branches, flowers and fruits are greatly influenced by the application of kinetin.

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