Germination, Emergence, and Seedling Establishment of Buffalo Gourd (<i>Cucurbita foetidissima</i>)

Horak, Michael J.; Sweat, Jonathan K.

doi:10.1017/s0043174500076621

Cited by 13 publications

(9 citation statements)

References 10 publications

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“…Germination of burcucumber (Sicyos angulatus L.) seeds occurred over a wide range of temperatures but was reduced at temperatures below 20 C and above 30 C (Mann et al 1981). Similarly, buffalo gourd (Cucurbita foetidissima Kunth) germination occurred in the dark at constant temperatures ranging from 15 to 37 C, with optimum germination at 25 C (Horak and Sweat 1994).…”

Section: Resultsmentioning

confidence: 99%

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Factors Affecting Germination of Citronmelon (Citrullus lanatusvar.citroides)

2014

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Citron melon is a monoecious, hairy annual vine commonly found in citrus orchards, and cotton and peanut fields. Information is not available on the effect of various environmental factors on the germination of citron melon. Laboratory and greenhouse experiments were carried out in 2011 and 2012 to determine the effect of light, temperature, salinity, pH, simulated water stress, and depth of sowing on the germination of citron melon. Citron melon germination was affected by various environmental factors. Highest germination was observed at day/night temperatures of 25/20 to 30/25 C regardless of light conditions. At temperatures below 25 C and beyond 35 C, germination declined and was higher under dark condition than light. Germination decreased as osmotic potential became more negative (−0.3 MPa to −1.5 MPa) and salt concentration increased (50 to 350 mM). No germination was observed at > −0.9 MPa and ≥ 300 mM salt concentrations. However, germination was observed over a broad range of pH (3 to 9) and up to 10-cm sowing depths. Seeds sown at the surface did not germinate but maximum germination (88 to 96%) occurred at 2- to 4-cm depth. The results of this study suggest that citron melon can grow in a wide range of climatic conditions and therefore can persist in Florida because of favorable weather and environmental conditions.

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Section: Resultsmentioning

confidence: 99%

“…Other weed species from the Cucurbitaceae family exhibit the same emergence characteristics. Horak and Sweat (1994) reported that surface-sown seeds of buffalo gourd did not germinate, but emergence was greatest (. 50%) at 2-to 8-cm sowing depth.…”

Section: Resultsmentioning

confidence: 99%

Factors Affecting Germination of Citronmelon (Citrullus lanatusvar.citroides)

2014

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“…This stands in contrast to invasive vine species like Brunnichia ovata (Shaw et al . 1991) and Cucurbita foetidissima (Horak & Sweat 1994), who require at least some soil coverage for germination.…”

Section: Resultsmentioning

confidence: 99%

“…Again, this trait of much higher emergence rates from seeds near the soil surface is shared with a wide range of invasive weeds, including Eupatorium adenophorum (Lu et al 2006), Nicandra physalodes (Watanabe et al 2002), and Cortaderia jubata (Drewitz & DiTomaso 2004). This stands in contrast to invasive vine species like Brunnichia ovata (Shaw et al 1991) and Cucurbita foetidissima (Horak & Sweat 1994), who require at least some soil coverage for germination.…”

Section: Effect Of Sowing Depthmentioning

confidence: 99%

Germination and emergence of Ambrosia artemisiifolia L. under changing environmental conditions in China

Sang

Li²,

Axmacher

2011

Plant Species Biology

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Laboratory and greenhouse studies were conducted to determine the effects of key environmental factors on germination and seedling emergence of the invasive weed Ambrosia artemisiifolia L. (common ragweed) collected from Mudanjiang (temperate climate), Nanjing (temperate-subtropical) and Nanchang (subtropical) in China. Germination of seeds occurred at temperatures ranging from 5 to 40°C, under both a 12-h photoperiod and continuous darkness. Germination success exceeded 48% in solutions with pH values between 4 and 12, with maximum rates occurring in distilled water at pH 5.57. Germination was greatly reduced in solutions with osmotic potentials below -0.8 MPa. Accordingly, the final germination ratio exceeded 69% at <200 mmol/L NaCl, but only reached 8% at 400 mmol/L NaCl. Emergence was greater than 75% at burial seed depths of 1-4 cm; no seedlings emerged from a soil depth of 8 cm. Seeds collected from Mudanjiang, Nanjing and Nanchang had very similar germination traits, with the main differences occurring in relation to temperature. The great germination success of common ragweed over highly variable conditions throughout its Chinese distribution range explains its successful large-scale invasion.

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“…The amount of energy reserves required to support elongation of the seedling from deeper depths and a reduction in light with increased planting depth have been suggested as reasons for reduced weed seedling emergence from greater depths (Benech-Arnold et al 2013). Tillage operations can influence weed seed placement within the soil profile (Horak and Sweat 1994). These data suggest that tillage deeper than 5 cm can bury smellmelon seed in the soil and reduce seedling emergence.…”

Section: Resultsmentioning

confidence: 99%

Studies on Seed biology, Distribution, and Chemical Control of Smellmelon (Cucumis melovar. agrestis Naudin): An Invasive Weed

Noor-Ziarat

Rezvani

Bagherani³

et al. 2019

Weed Technol

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Smellmelon is an invasive weed in the Golestan and Mazandran provinces of Iran. In a series of experiments, germination of freshly harvested seeds, cardinal temperatures, plant burial depth, and distribution and chemical control of smellmelon were evaluated to assist us in developing a management program to help growers manage this weed more effectively. The optimal seed germination temperature was estimated at 32.7 C by a two-piece segmented model. Mature fresh seeds of smellmelon exhibited no dormancy, whereas mucilage of the seed negatively affected germination. The greatest seed sowing depth from which seedlings emerged was 5 cm. Geographical distribution of smellmelon occurred up to an elevation of 350 m above sea level, whereas the density of smellmelon decreased at elevations higher than 151 m. Imazethapyr reduced plant growth and the reproductive capacity of smellmelon. Germination of seed from smellmelon plants treated with imazethapyr was significantly reduced compared with seed treated with bentazon or bentazon plus acifluorfen. A combination of tillage of deeper than 5 cm, early planting time, and the use of imazethapyr can reduce smellmelon competition in various field crops.

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Germination, Emergence, and Seedling Establishment of Buffalo Gourd (Cucurbita foetidissima)

Cited by 13 publications

References 10 publications

Factors Affecting Germination of Citronmelon (Citrullus lanatusvar.citroides)

Factors Affecting Germination of Citronmelon (Citrullus lanatusvar.citroides)

Germination and emergence of Ambrosia artemisiifolia L. under changing environmental conditions in China

Studies on Seed biology, Distribution, and Chemical Control of Smellmelon (Cucumis melovar. agrestis Naudin): An Invasive Weed

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