Allelopathic potential of the extracts of non-galled stems and globoid stem galls of Eremanthus erythropappus (DC) McLeish (Asteraceae)

We investigated the phytotoxicity of desert cotton (Aerva javanica) extracts on wild oat and wheat. Aqueous extracts from A. javanica roots, leaves and inflorescences collected from Jeddah and Al-Baha regions, Saudi Arabia were used. Generally, the allelopathic potential of water extracts of A. javanica collected from Jeddah were more in inhibitory to wild oat germination and seedlings growth than those from Al-Baha. In both regions, root extracts were inhibitory to wild oat followed by leaves and inflorescences extracts. All test aqueous extracts of both regions did not inhibit the wheat germination or seedlings growth.Whreas, the wild oat germination was reduced by root extracts 58.62 %, 28.62 % leaves extracts : 32.72 %, 17.72 % and inflorescences extract 28.11 %, 12.13 % by in plants samples collected from Jeddah and Al-Baha, respectively. Wild oat radical length was inhibited by root extracts 53.27 %, 32.84 % leaves 42.35 %, 9.63 % and inflorescences extracts 22.64 %, 16.75 % in case of Jeddah and Al-Baha plants, respectively. In pot culture experiment, all treatments markedly reduced the plant dry weight and soluble carbohydrates, proteins and free amino acids contents in wild oat. The differences in the allelopathic potentials of studied A. javanica extracts were related to the qualitative variations in their phytochemicals constituents. Our results showed that A. javanica extracts could be safely used to control wild oat growth in wheat fields after more detsaled research..

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Allelopathic potential of native invasive plants: The evidence from southern China

Allelopathy Journal ◽

10.26651/allelo.j./2018-43-1-1128 ◽

2018 ◽

Vol 43 (1) ◽

pp. 43-52 ◽

Cited By ~ 2

Author(s):

Bao Ming Chen ◽

Shao -Lin Peng

Keyword(s):

Invasive Plants ◽

Southern China ◽

Allelopathic Potential ◽

Native Invasive

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Comprehensive evaluation of the allelopathic potential of Elymus nutans

Ecology and Evolution ◽

10.1002/ece3.7982 ◽

2021 ◽

Author(s):

Xiaolong Quan ◽

Youming Qiao ◽

Mengci Chen ◽

Zhonghua Duan ◽

Huilan Shi

Keyword(s):

Comprehensive Evaluation ◽

Allelopathic Potential ◽

Elymus Nutans

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Effect of Prunus serotina Ehrh. Volatile Compounds on Germination and Seedling Growth of Pinus sylvestris L.

Forests ◽

10.3390/f12070846 ◽

2021 ◽

Vol 12 (7) ◽

pp. 846

Author(s):

Aleksandra Halarewicz ◽

Antoni Szumny ◽

Paulina Bączek

Keyword(s):

Pinus Sylvestris ◽

Volatile Compounds ◽

Scots Pine ◽

Prunus Serotina ◽

Gas Chromatography Mass Spectrometry ◽

Volatile Fraction ◽

Black Cherry ◽

Allelopathic Potential ◽

Pine Seedlings ◽

Phytotoxic Effect

In temperate European forests invaded by Prunus serotina Ehrh. (black cherry), a reduction in the spontaneous regeneration capacity of Pinus sylvestris L. (Scots pine) is observed. It could be caused by various factors, including allelopathic properties of this invasive plant. In this study the phytotoxic effect of P. serotina volatile compounds on P. sylvestris and the seasonal variation in this effect were assessed. Simple assays showed that volatiles emitted from P. serotina leaves significantly inhibited root growth of P. sylvestris seedlings. Their negative effect on stem growth was much weaker. The strongest phytotoxic effect on Scots pine seedlings was caused by the volatiles emitted from the youngest black cherry leaves. In fresh foliage of P. serotina, nineteen volatile organic compounds were identified by gas chromatography–mass spectrometry (GC–MS). The dominant compound was benzaldehyde. On the basis of tests of linalool alone, it was found that this monoterpene present in the volatile fraction has a strong allelopathic potential and inhibits germination, root elongation and shoot elongation of pine seedlings. The results of our research suggest that volatile compounds from P. serotina leaves could limited survival of P. sylvestris individuals in the seedling phase.

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Wild Oat (Avena Fatua L.) and Canary Grass (Phalaris Minor Ritz.) Management Through Allelopathy

Journal of Plant Protection Research ◽

10.2478/v10045-010-0007-3 ◽

2010 ◽

Vol 50 (1) ◽

pp. 41-44 ◽

Cited By ~ 36

Author(s):

Khawar Jabran ◽

Muhammad Farooq ◽

Mubshir Hussain ◽

Muhammad Ali ◽

Keyword(s):

Plant Species ◽

Avena Fatua ◽

Complete Inhibition ◽

Wild Oat ◽

Allelopathic Potential ◽

Barnyard Grass ◽

Phalaris Minor ◽

Germination Time ◽

Root And Shoot Length ◽

Canary Grass

Wild Oat (Avena FatuaL.) and Canary Grass (Phalaris MinorRitz.) Management Through AllelopathyEnvironmental contamination, herbicide resistance development among weeds and health concerns due to over and misuse of synthetic herbicides has led the researchers to focus on alternative weed management strategies. Allelochemicals extracted from various plant species can act as natural weed inhibitors. In this study, allelopathic extracts from four plant species sorghum [Sorghum bicolor(L.) Moench], mulberry (Morus albaL.), barnyard grass [Echinochloa crusgalli(L.) Beauv.], winter cherry [Withania somnifera(L.)] were tested for their potential to inhibit the most problematic wheat (Triticum aestivumL.) weeds wild oat (Avena fatuaL.) and canary grass (Phalaris minorRitz.). Data regarding time to start germination, time to 50% germination, mean germination time, final germination percentage, germination energy, root and shoot length, number of roots, number of leaves, and seedling fresh and dry weight was recorded for both the weeds, which showed that mulberry was the most inhibitory plant species while sorghum showed least allelopathic suppression against wild oat. Mulberry extracts resulted in a complete inhibition of the wild oat germination. The allelopathic potential for different plants against wild oat was in the order: mulberry > winter cherry > barnyard grass > sorghum. Mulberry, barnyard grass and winter cherry extracts resulted in a complete inhibition of canary grass. Sorghum however exhibited least suppressive or in some cases stimulatory effects on canary grass. Plants revealing strong allelopathic potential can be utilized to derive natural herbicides for weed control.

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