Effect of Low Temperature on Purple Nutsedge (<i>Cyperus rotundus</i>) Reproductive Biology

Dor, Evgenia; Hershenhorn, Joseph

doi:10.1614/ws-d-12-00061.1

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…Thereafter, any soil was washed off the tubers were stored in paper bags in a refrigerator at 4°C for 2 weeks before the start of the experiment. By keeping tubers at 3-4°C for a short time (4 days to 2 weeks), it was aimed to trigger a dormancybreaking (Dor and Hershenhorn, 2013;Tumbleson and Kommedahl, 1962). The tubers were dark brown in colour, and their mean weight was estimated at 0.83 ± 0.17 g.…”

Section: Tuber Collection and Preparationmentioning

confidence: 99%

Development of a new thermal time model for describing tuber sprouting of Purple nutsedge (Cyperus rotundus L.)

et al. 2021

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Purple nutsedge (Cyperus rotundus L.) is one of the most cosmopolitan perennial weeds prevalent in tropical and subtropical regions.Crop yield losses in the range of 20%-90% have been reported as competition of this weed (Peerzada, 2017). Tubers are the major organs through which purple nutsedge propagates (Siriwardana and Nishimoto, 1987), and the establishment of young shoots heavily relies on the sprouting process which, in turn, is mostly affected by temperature, among other environmental factors (Lati et al., 2011;Nishimoto, 2001). Increased knowledge of the factors that regulate the emergence of the reproductive organs will not only help to predict the emergence time of perennial weeds, but could also improve their control strategies (Favrelière et al., 2020;Holt and Orcutt, 1996;Liew et al., 2012).The crucial timing of weed removal is influenced by the relative emergence times of the crop and of the weed (Aikman et al., 1995;

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Section: Tuber Collection and Preparationmentioning

confidence: 99%

Development of a new thermal time model for describing tuber sprouting of Purple nutsedge (Cyperus rotundus L.)

et al. 2021

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“…Mundialmente conhecida pelo nome de "purple nutsedge" e no Brasil por "tiririca", C. rotundus é considerada a planta daninha mais nociva nas regiões tropicais e subtropicais do planeta, infestando quase todas as principais culturas (Dor & Hershenhorn 2013, FAO 2013. De acordo com Bendixen & Nandihalli (1987) sua relevância como planta daninha já foi citada em pelo menos 52 culturas e mais de 90 países.…”

Section: Cyperus Laxus Lam Tabl Encycl 1: 146 (1791) Figura 2 Kunclassified

Cyperaceae do rio Apodi-Mossoró, Estado do Rio Grande do Norte, Brasil

Ribeiro

Prata

Camacho

et al. 2014

Hoehnea

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-(Cyperaceae in the Apodi-Mossoró River, Rio Grande do Norte State, Brazil). The Apodi-Mossoró River, located in the Caatinga biome, has its course characterized by diverse landscape sand humid environments, as well as by many members of the family Cyperaceae. Studies on the flora of Cyperaceae are scarce in northeastern Brazil and nonexistent for Rio Grande do Norte State. Twenty-one botanical expeditions were undertaken in this area during the period from July 2007 to May 2008 on four main points in the municipalities of Felipe Guerra, Governador Dix-Sept Rosado, Luís Gomes, and Mossoró. Seven genera and twenty-five species of Cyperaceae were found in the Apodi-Mossoró River, twenty-one of which are new records for Rio Grande do Norte State.This figure more than doubled the number of species of the family known to occur in this Brazilian State. Botanical descriptions, taxonomic comments, identification keys, and illustrations are provided.

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“…This organ can germinate even in total darkness within four to six weeks (Betria and Montaldi, 1975). Although it can regrow at temperatures from 4 to 45 °C, it has better germinations within 20 to 40 °C by way of daily alternating and high-temperature pulses (Dor and Hershenhorn, 2013;Wallace et al, 2013). From a single fragment, the tuber could multiply into more than a thousand pieces per square meter in just three months (Islam et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Regrowth of Lowland Ecotype Cyperus rotundus L. in Response to Soil Depth, Shoot Clipping and Flooding Depth Interventions

Donayre,

Bruno,

Latonio

et al. 2022

MJST

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Lowland ecotype Cyperus rotundus L. (LE-CYPRO) has tubers that can grow and survive under flooded conditions. However, information on the responses of its tubers to the combination of soil depth or shoot clipping with flooding is unavailable. Two experiments were conducted to determine the germination and regrowth of LE-CYPRO tubers in response to soil depth, shoot clipping and flooding depth interventions. Experiment 1 involved pre-sprouted (PS) and non-sprouted (NS) tubers subjected to three soil depths (0, 5 and 10 cm) and three flooding depths (0, 3 and 5 cm); Experiment 2 used PS tubers subjected to shoot clipping at periods of 10, 20 and 30 days after planting (DAP) under three water conditions (saturated, early flooding and late flooding). Irrespective of soil depths, PS and NS tubers had 100% germination and regrowth without flooding (0-cm flooding depth). When planted at the soil surface (0-cm soil depth) and flooded by 3- to 5-cm, only 50 and 40% of PS while 20% of NS tubers germinated. No germination was seen on tubers buried under 5- to 10-cm soil depths and flooded by 3- to 5-cm depths. Revived PS tubers buried and flooded for 100 days at 0-, 5- and 10-cm depths had 20 to 60% germinations at 3-cm flooding depth and 20 to 70% at 5-cm flooding depth; NS tubers had 40 to 50% germinations at 3-cm flooding depth and 40% at 5-cm flooding depth. Growth variables of the weed at shoot clipping periods of 10, 20 and 30 DAP were comparable to the control under saturated conditions. Growth variables were reduced by 68 to 97.3% and 21.7 to 100% when aided by early and late flooding, respectively. This information could be used in the formulation of effective and comprehensive weed management for LE-CYPRO.

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Effect of Low Temperature on Purple Nutsedge (Cyperus rotundus) Reproductive Biology

Cited by 10 publications

References 24 publications

Development of a new thermal time model for describing tuber sprouting of Purple nutsedge (Cyperus rotundus L.)

Development of a new thermal time model for describing tuber sprouting of Purple nutsedge (Cyperus rotundus L.)

Cyperaceae do rio Apodi-Mossoró, Estado do Rio Grande do Norte, Brasil

Regrowth of Lowland Ecotype Cyperus rotundus L. in Response to Soil Depth, Shoot Clipping and Flooding Depth Interventions

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