Genetic uniformity of <i>Alternanthera philoxeroides</i> in South China

Ye, W H; Li, J; Cao, Hong-Ling; Ge, Xue Jun

doi:10.1046/j.1365-3180.2003.00346.x

Cited by 88 publications

(83 citation statements)

References 38 publications

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“…Population codes see Table 1. philoxeroides ( 4B) , , , , (Sosa et al, 2003) , , (Xu et al, 2003;Ye et al, 2003;Wang et al, 2005) , , ,…”

Section: Manova 19mentioning

confidence: 99%

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Patterns of morphological variation of alligator weed (Alternanthera philoxeroides): from native to invasive regions

Pan¹

2006

Biodiversity Science

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The damage caused by biological invasions has traditionally been thought to result from alien species taking advantage of ecological differences between the native and introduced regions. In contrast, evidence is increasing that invasive plants can undergo rapid adaptive evolution during the process of range expansion. Using a common garden approach, we compared 19 morphological and anatomical traits of Alternanthera philoxeroides collected in native (Argentina) and invasive (China and USA) regions. The results show that native and invasive A. philoxeroides have become genetically differentiated. Populations from Argentina had significant morphological variation in nine traits, with heritability varying from 49% to 89%. The nine traits are stomatal density, stomatal index, diameter of stem, diameter of pith cavity, thickness of vascular cylinder, thickness of cortex, area ratio of vascular cylinder, area ratio of pith cavity, and leaf index. However, populations from introduced regions showed no significant variations in any of the 19 traits, indicating that the morphological differences within introduced regions might be based on phenotypic plasticity.

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“…Population codes see Table 1. philoxeroides ( 4B) , , , , (Sosa et al, 2003) , , (Xu et al, 2003;Ye et al, 2003;Wang et al, 2005) , , ,…”

Section: Manova 19mentioning

confidence: 99%

“…, (Hanfling & Kollmann, 2002;Lee, 2002); (3) , (Thompson, 1991;Villablanca et al, 1998;Tsutsui et al, 2000;Xu et al, 2003;Ye et al, 2003) , , , (Daehler, 2003;Pan et al, 2006) , ( ) (Thompson, 1991;Villablanca et al, 1998;Ellstrand & Schierenbeck, 2000;Tsutsui et al, 2000;Lee, 2002) (Alternanthera philoxeroides)…”

mentioning

confidence: 99%

Patterns of morphological variation of alligator weed (Alternanthera philoxeroides): from native to invasive regions

Pan¹

2006

Biodiversity Science

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“…It is considered as an invasive and troublesome weed in rice, maize, cotton, soybean, vegetables and fruit trees in China (Lu et al, 2002;Ye et al, 2003). Alligator weed has been proliferating in different field crops in that country because the local ecological conditions favor its growth.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Maize (Zea mays) Seedling Growth by Invasive Alligatorweed (Alternanthera philoxeroides) Residues

et al. 2018

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-To investigate the allelopathic influence of soil incorporated plant residues of alligatorweed on emergence and seedling growth of maize (Zea mays), an experiment was conducted under laboratory conditions in the 2014-15 period. The effect of soil amended with whole plant residues of alligatorweed at different concentrations (1, 2, 3, 4 and 5% on w/w basis) was compared with residue free soil (control). Emergence traits, such as emergence percentage, time to 50% emergence, mean emergence time and emergence index were negatively influenced by weed residue incorporation as compared with weed residue free soil. Alligatorweed residues also exerted a pronounced negative influence on root and shoot lengths, root and shoot dry weights and seedling vigor index of the maize crop. The results revealed that the inhibitory effect was directly proportional to the increasing concentrations (1, 2, 3, 4 and 5%) of the weed residues as compared to control treatment. It was observed that soil infested with 4% and 5% residues of alligatorweed caused a maximum reduction in emergence (76-87%), root and shoot lengths (58-73% and 42-61%), root and shoot dry weights (49-58% and 40-48%) and seedling vigor index (87-95%) of the maize crop. Chloro-genic acid, ferulic acid, 4-hydroxy-3-methoxybenzoic acid, trans-4-hydroxy 3-methoxy cinnamic acid, gallic acid, p-coumaric acid, querceitin and syringic acid were identified as water soluble phenolics in alligatorweed residue soil saturated solution. This study indicates that the allelopathic potential of alligatorweed may play an important role in suppressing maize seedling growth.Keywords: invasive weed, allelopathy, emergence, maize, weed residues, seedling growth. RESUMO -A fim de investigar a influência alelopática de resíduos vegetais de erva-de-jacaré incorporados no solo na emergência e no crescimento de plântulas de milho (Zea mays), foi conduzido um experimento em condições de laboratório no período 2014-15. O efeito do solo corrigido com resíduos vegetais inteiros de erva-de-jacaré em diferentes concentrações (1, 2, 3, 4 e 5% em uma razão p/p) foi comparado com o do solo livre de resíduos (controle

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“…It is a problematic weed in 30 countries; it is considered a serious weed in eight of these and a major weed in the others (Gunasekera and Bonila, 2001). Alligator weed has been recognized as an invasive and troublesome weed in rice, corn, cotton, and soybean in China (Lu et al, 2002, Ye et al, 2003. In China, crop yield was reported to be reduced by 20-63 percent due to alligator weed (Ensbey, 2001).…”

Section: Introductionmentioning

confidence: 99%

Comparative allelopathic potential of metabolites of two Alternanthera species against germination and seedling growth of rice

et al. 2014

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-A laboratory study was conducted to investigate the allelopathic effect of aqueous extracts of plant parts of Alternanthera philoxeroides and A. sessilis and soil incorporated residues on germination and seedling growth of rice (Oryza sativa). Aqueous extracts prepared from different plant parts of Alternanthera species delayed rice germination. Alternanthera philoxeroides and A. sessilis inhibited rice germination by 9-100% and 4-49%, respectively. Germination of rice seeds was reduced with increasing concentration of aqueous leaf extracts of both weed species. Early seedling growth (root and shoot lengths) and seedling vigor index were significantly reduced by 5% aqueous leaf extract compared with distilled water treated control. Germination, root and shoot lengths, root and shoot dry weights and seedling vigor index of rice were drastically reduced by 3 and 4% in residue infested soil compared with residue free soil. The inhibitory effect of A. philoxeroides in terms of germination and seedling growth of rice was greater than that of A. sessilis. Five percent aqueous leaf extract and 4% residue infested soil of A. philoxeroides caused complete failure of rice seed germination. Alternanthera philoxeroides contained water soluble phenolics, namely 4 hydroxy-3-methoxy benzoic acid (16.19 mg L -1 ) and m-coumaric acid (1.48 mg L -1 ), whereas Alternanthera sessilis was rich in chlorogenic acid (17.85 mg L -1 ), gallic acid (11.03 mg L -1 ) and vanillic acid (9.88 mg L -1 ). The study indicates that the allelopathic potential of Alternanthera species may play an important role in enhancing the invasiveness of these species and may suppress rice plants in the vicinity.Keywords: allelopathy, Alternanthera, rice, germination/seedling growth. RESUMO -Foi realizado um estudo laboratorial para investigar o efeito alelopático de extratos aquosos de partes de plantas de Alternanthera philoxeroides e A. sessilis e dos resíduos incorporados ao solo na germinação e no crescimento de plântulas de arroz (Oryza sativa). Os extratos aquosos preparados a partir de diferentes partes das plantas das duas espécies de Alternanthera retardaram a germinação do arroz. Alternanthera philoxeroides e A. sessilis inibiram a germinação de arroz em 9-100 % e 4-49 %, respectivamente. A germinação de sementes de arroz foi reduzida com o aumento da concentração de extratos aquosos de folhas de ambas as espécies de plantas daninhas. O crescimento inicial de plântulas (comprimento da raíz e da parte aérea) e o índice de vigor

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Genetic uniformity of Alternanthera philoxeroides in South China

Cited by 88 publications

References 38 publications

Patterns of morphological variation of alligator weed (Alternanthera philoxeroides): from native to invasive regions

Patterns of morphological variation of alligator weed (Alternanthera philoxeroides): from native to invasive regions

Suppression of Maize (Zea mays) Seedling Growth by Invasive Alligatorweed (Alternanthera philoxeroides) Residues

Comparative allelopathic potential of metabolites of two Alternanthera species against germination and seedling growth of rice

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