Allelopathic and Autotoxic Effects of Medicago sativa—Derived Allelochemicals

Ghimire, Bimal Kumar; Ghimire, Balkrishna; Yu, Chang Yeon; Chung, Ill‐Min

doi:10.3390/plants8070233

Cited by 63 publications

(46 citation statements)

References 72 publications

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“…Previous studies on autotoxicity of forage were mainly focused on alfalfa and less reports of autotoxicity about Gramineae (Ghimire, 2019). The present study clearly demonstrated that drooping wildryegrass had autotoxicity during its germination and seedling growth.…”

Section: Figuresupporting

confidence: 65%

Comprehensive evaluation of the allelopathic potential of Elymus nutans

Quan

Qiao

Chen

et al. 2021

Preprint

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Drooping wildryegrass (Elymus nutans) has been widely planted together with other perennial grasses for rebuilding degraded alpine meadow atop the Tibetan Plateau. However, the rebuilt sown pastures begin to decline a few years after establishing. One of the possible causes for degradation of sown grassland may come from allelopathy of planted grasses. The purpose of this study was to examine allelopathic potential of drooping wildryegrass. Three types aqueous extracts from drooping wildryegrass and its root zone soil were prepared and 5 highland crops and 5 perennial grasses were used as recipient plants. Drooping wildryegrass exhibited strong allelopathic potential on germination and seedling growth of 5 crops germination and growth, but different crops or perennial grasses respond to the extracts differently. The pieces extract has stronger inhibition than others. Hulless barley, oat and Chinese fescue were the most affected, while quinoa and Siberian wildryegrass were the least affected. Drooping wildryegrass presented less influence on Kentucky bluegrass and crymophylla bluegrass than on Chinese fescue. It is recommended that the species combination of mixture for restoration should consider allopathic effects of the co-seeding and decrease the seeding rate ratio of drooping wildryegrass. The annual dicot crop quinoa and rape seeds can be used as alternative subsequent crop for seed field of drooping wildryegrass monoculture.

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Section: Figuresupporting

confidence: 65%

Comprehensive evaluation of the allelopathic potential of Elymus nutans

Quan

Qiao

Chen

et al. 2021

Preprint

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“…Thus, by inducing changes in the vital processes, an improvement in the quality and quantity of the crops appears, as well as an increase in production [2]. The literature data provides numerous information regarding the influence of polyphenolic compounds in seed germination and plant development, in the form of global crude extracts, fractions or individual compounds obtained from different plant sources [1,3,4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Beech Bark Extract in the Sage (Salvia Officinalis L.) Plant Growth and Volatile Oil Profile

et al. 2020

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The use of bioactive compounds can act in growth stimulation and also influence the biosynthesis of the metabolites in plants. The aim of this paper is to assess the influence of the beech (Fagus sylvatica L.) bark crude extract (BBCE) on the growth and development of sage (Salvia officinalis L.) plants. Special attention was given to the analysis of volatile oil obtained from the sage treated plant. Thus, the biological activity of BBCE was assessed by determining the germination capacity, biomass accumulation, histo-anatomical aspects, and photoassimilatory pigment accumulation, quantitative, and qualitative sage volatile oil analysis. The results show stimulation of the biomass and photoassimilatory pigment accumulation. The mesophyll thickness and the vascular tissue surface are smaller in the treated variants, compared to the control. On the other hand, the amount of volatile oil was significantly higher in the treated plants. In the experimental variants, an increase in the quantity of eucalyptol, camphor, camphene, and α-caryophyllene is observed. The amount of eucalyptol increased in the experimental variant, with about 82%, compared to the control. BBCE could be properly used as natural bioregulators because according to our results seems to improve the yield of the sage crop. The results of this research have the potential to contribute greatly to ecological agricultural production.

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“…Alfalfa cultivar AC Blue J may have reduced alfalfa autotoxicity Generally, seeding alfalfa on old alfalfa stands or recently broken alfalfa pasture is not recommended as the new plants suffer from "alfalfa sickness", a term used to describe the autotoxicity effect that old alfalfa plants have on newly developing plants (Ghimire, Ghimire, Yu, & Chung, 2019;Hedge & Miller, 1990;Miller et al, 1988). As per recommendations, producers generally wait for a year or two before reestablishing alfalfa and seed a cereal crop to clean the plots.…”

Section: 2mentioning

confidence: 99%

Pasture rejuvenation using sainfoin and cicer milkvetch in western Canada

et al. 2020

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Sod‐seeding of depleted pastures with non‐bloating legumes can be a low‐cost pasture rejuvenation strategy for ranchers in the North American prairies. A study was conducted to determine if sainfoin (Onobrychis vicifolia subsp. vicifolia) or cicer milkvetch (CMV) (Astragalus cicer L.) populations or cultivars (hereinafter populations) can be used to rejuvenate alfalfa (Medicago sativa L.) or grass pastures. The study included sainfoin populations with increased fitness to grow with alfalfa and CMV cultivars that were selected for early emergence and rapid seedling growth. These populations were seeded using three seeding methods: traditional re‐seeding, drilling seed with Great Plains drill, or Pan drill, using split‐plot randomization at three locations in Alberta in 2015 or 2016. Lethbridge had pre‐existing alfalfa while Ponoka and Red Deer were predominantly grass pastures. The sod‐seeded rejuvenation, as indicated by percentage dry matter (DM) contributed by newly planted species succeeded at Lethbridge (≥15), failed at Ponoka (∼1), and partially succeeded at Red Deer (≥9). Successful establishment of new plants did not increase the total forage mass of the rejuvenated pasture. Sainfoin populations established better and contributed greater forage mass compared to CMV cultivars when sod‐seeded on alfalfa pasture, but the improvement was not consistent on grass pasture. Forage nutritive values were not different among populations within species, but pasture seeded with CMV cultivars had greater crude protein than unseeded plots. Sod‐seeded grass–legume pasture had greater crude protein than unseeded plots at Red Deer. Sod‐seeding alfalfa pasture with sainfoin populations can be an efficient pasture rejuvenation strategy.

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Allelopathic and Autotoxic Effects of Medicago sativa—Derived Allelochemicals

Cited by 63 publications

References 72 publications

Comprehensive evaluation of the allelopathic potential of Elymus nutans

Comprehensive evaluation of the allelopathic potential of Elymus nutans

Effects of Beech Bark Extract in the Sage (Salvia Officinalis L.) Plant Growth and Volatile Oil Profile

Pasture rejuvenation using sainfoin and cicer milkvetch in western Canada

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