scholarly journals Effect of Morus alba L. leaf extracts on seeds germination and the seedlings growth of Sinapis alba L. and Cucumis sativus L.

Author(s):  
Joanna Biel-Parzymięso

Plant growth and development can be modified, including modification by chemical processes that result from neighbouring plants. If interactions in the natural environment between one plant and another are of a chemical nature, then this phenomenon is called allelopathy. The aim of the study was to determine the effect of aqueous extracts of Morus alba L., at concentrations of 3%, 5% and 10%, on the germination and growth of Sinapis alba L. (mustard) and Cucumis sativus L. (cucumber). It was found that allelopathins contained in the extracts slowed the germination of both species. The highest, 10%, extracts significantly inhibited germination. It was found that with an increase in allelopathin concentration, there was a significant inhibition of the growth of underground and above-ground plant organs. A complete lack of growth was observed for mustard plants grown from seeds watered with extracts during germination for 48 hours. Compared to the control plants, a differences in the growth of fresh and dry mass in plants watered with extracts during the germination and growth phases were found. Depending on the timing of treatment and the type of organ tested, aqueous mulberry leaf extracts at lower concentrations had a positive effect on the growth and development of the analysed species. Extracts with a higher concentration of chemical compounds had a negative impact on both mustard and cucumber.

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 530g-530
Author(s):  
Nancy E. Roe ◽  
Peter J. Stoffella

Rapid production of compost often results in crop damage by phytotoxic compounds or high C/N ratios in immature (uncured) compost. The influence of immature biosolids-yard trimmings compost on germination and growth of cucumber (Cucumis sativus L.) was evaluated. Germination percentages of cucumbers seeded in equal parts (v/v) of compost and vermiculite were similar to those in vermiculite. When screened compost was placed in flats and compared with flats of potting mix or sandy field soil, germination percentages were 98, 96, and 89 for mix, sand, and compost respectively. Germination in compost-amended field plots was higher than in soil when cucumbers were planted 1, 2 or 10 weeks after compost application, but similar in 3 and 5 week plantings. Use of this immature compost increased, decreased, or did not affect cucumber seed germination, depending on media and growing conditions.


2017 ◽  
Vol 11 (4) ◽  
pp. 174-184
Author(s):  
Oluwagbenga Oluwasola ◽  
Alfred Maroyi ◽  
Anthony Jide Afola

2017 ◽  
Vol 4 (2) ◽  
pp. 178-182
Author(s):  
Prabhakaran J ◽  
Arumugam K

Leaf extracts of Casuarina. equisetifolia L. was evaluated for its allelopathic influenced on rice cultivars viz. IR- 20 and TKM – 9. Leaf extracts was tested at 2.5, 5, 10, 15 and 20% concentration. Seed germination, shoot length, biomass, chl - a , chl- b, carotenoids, starch, protein and amino acid contents were significantly reduced by leaf extracts and highest inhibition was observed in 20% concentration. But at lower concentration (2.5%), the seedling growth was slightly enhanced than control. The higher degree of germination and growth inhibition was observed in cultivar TKM-9 than IR-20.


2019 ◽  
Vol 47 (4) ◽  
pp. 1168-1177 ◽  
Author(s):  
Yanwei CHENG ◽  
Peng HE ◽  
Lunwei JIANG ◽  
Shiqiang LIU ◽  
Yong ZHOU

SEPALLATA (SEP) genes encode the E class MADS-box transcription factors that play vital roles in various aspects of plant growth and development. In this study, we isolated a SEP-like gene from cucumber (Cucumis sativus L.), which was previously named as CsMADS01. CsMADS01 had a coding sequence (CDS) of 741 bp, and coded a deduced protein of 246 amino acid residues that was predicted to be located in the nucleus. The putative CsMADS01 protein was typically characterized by the MIKC-type MADS (including MADS, I, K, and C domains) and shared high homology with other SEP-like proteins. Phylogenetic analysis of CsMADS01 and SEP proteins from other plants revealed that CsMADS01 was a member of the SEP1/2 clade of SEP proteins and was the most closely related to ZjMADS48 from Chinese jujube. Promoter analysis showed that several cis-elements related to stress response and hormones were present in the promoter region of CsMADS01. Expression analysis indicated that CsMADS01 was highly expressed during the development of male and female flowers, and the expression increased gradually along with fruit development. Ectopic expression of CsMADS01 in Arabidopsis resulted in a phyllody-like phenotype and the transgenic plants never flowered. These results suggest that CsMADS01 plays an important role in the growth and development of cucumber.   ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 4, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********


2021 ◽  
Vol 939 (1) ◽  
pp. 012093
Author(s):  
M Baratova ◽  
Sh Kosimova ◽  
S Bustonova ◽  
M Baratova

Abstract This article describes the results of the conducted field experiment by using biostimulants “Uchkun”, “Super Uchkun”, “Gossipren” and “Verva” on cucumber varieties (Orzu) in Andijan region and the effect on the increase of productivity. It was revealed that the pre-sowing treatment of cucumber seeds with biostimulants promoted a significant increase in seed germination and growth processes. The most effective growth stimulant on Orzu cucumber was Super Uchkun. On average, the yield of cucumber when treated with biostimulants increased by 10.28%; 23.8%; 24.27% and 14.29%, respectively; while the yield increase was 1.3, 2.3, 2.7, and 0.9 t/ha, respectively.


1965 ◽  
Vol 20 (7) ◽  
pp. 689-693 ◽  
Author(s):  
Manfred Weidner ◽  
Margarete Jakobs ◽  
Hans Mohr

Photomorphogenesis, i. e. the control of plant growth and development by light independent of photosynthesis, is mediated mainly through phytochrome 1. Recently the hypothesis has been advanced that P730, the active phytochrome, acts through differential gene activation 2. — The results presented in this paper support this view. It has been shown that synthesis of RNA and protein in the mustard seedling (Sinapis alba L.) are controlled by phytochrome. The photochemical formation of P730 by red light leads to a strong increase in RNA and protein contents in the seedling. The influence of red can be reversed by an immediate subsequent irradiation with far-red light. This reversibility clearly indicates that phytochrome is involved.


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