Triploid Watermelon Production Practices and Varieties

Maynard, Donald N.; Elmstrom, G. W.

doi:10.17660/actahortic.1992.318.21

Cited by 33 publications

(41 citation statements)

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“…In triploid watermelon production, diploids are included as a viable pollen source for pollination and fruit set (Kihara, 1951;Rubatzky and Yamaguchi, 1997). To provide sufficient pollen for maximum triploid fruit yield, plants should be planted in a ratio of one pollenizer plant for every two to four triploid plants (Fiacchino and Walters, 2003;Maynard and Elmstrom, 1992;NeSmith and Duval, 2001). The pollenizer cultivar has an effect on the yield of triploid fruit (Fiacchino and Walters, 2003;Freeman et al, 2007b).…”

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“…Triploid plants and pollenizers can be planted in separate rows or interplanted in the same row (Maynard and Elmstrom, 1992). The separate row planting method establishes one row of pollenizers and then two to four rows of triploids (Maynard and Elmstrom, 1992;Rubatzky and Yamaguchi, 1997). NeSmith and Duval (2001) reported a decrease in yield when the pollenizer 'Ferarri' was planted more than 6 m from the triploid 'Genesis' indicating that field arrangement of the pollenizer is an important consideration.…”

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Maximum Potential Vegetative and Floral Production and Fruit Characteristics of Watermelon Pollenizers

Dittmar¹,

Monks²,

Schultheis³

2009

horts

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Triploid (seedless) watermelon [Citrullus lanatus (Thunb.) Matsum. and Nak.] pollen is nonviable; thus, diploid (pollenizer) watermelon cultigens are required to supply viable pollen for triploid watermelon fruit set. The objective of this research was to characterize maximum potential vegetative growth, staminate and pistillate flower production over time, and measure exterior and interior fruit characteristics of pollenizer cultigens. Sixteen commercially available and numbered line (hereafter collectively referred to as cultigens) pollenizer and two triploid cultigens were evaluated in 2005 and 2006 at Clayton, NC. Vegetative growth was measured using vine and internode length, and staminate and pistillate flower development was counted weekly. Fruit quality and quantity were determined by measuring individual fruit weights, soluble solids, and rind thickness. Based on vegetative growth, pollenizer cultigens were placed into two distinct groups.

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Maximum Potential Vegetative and Floral Production and Fruit Characteristics of Watermelon Pollenizers

Dittmar¹,

Monks²,

Schultheis³

2009

horts

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“…Today, specialty vegetables are gaining market prominence and triploid watermelons [Citrullus lanatus (Thunb.) Matsum & Nakai] are an attractive option for consumers (Maynard and Elmstrom, 1992). Taste test and consumer interviews indicated a significant market growth potential for triploid or seedless watermelons (Marr and Gast, 1991) In addition, grower and breeder interest in seedless watermelons is increasing, in part, due to triploid watermelons' heightened resistance to nematodes (Montalvo and Esnard, 1994) and watermelon fruit blotch (Acidivorax avenae subsp.…”

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confidence: 99%

Emergence of `Genesis' Triploid Watermelon following Mechanical Scarification

Duval¹,

NeSmith²

1999

jashs

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ADDITIONAL INDEX WORDS. Citrullus lanatus, seedless watermelon, seedlings, seedcoat adherence ABSTRACT. Production of triploid watermelon [Citrullus lanatus (Thunb.) Matsum & Nakai] transplants is hindered by poor, inconsistent emergence, and frequent seed coat adherence to cotyledons. Seed coat adherence leads to weakened and slow growing plants. High seed costs, coupled with stand establishment problems, discourages transplant producers from growing this crop. Improvement of triploid watermelon emergence will lessen financial risks to growers and transplant producers and will provide a more reliable production system. Mechanical scarification was evaluated as a means to overcome inconsistent emergence and seed coat adherence. Seeds of 'Genesis' triploid watermelon were placed in a cylinder with 100 g of very coarse sand (1.0 to 2.0 mm diameter) and rotated at 60 rpm for 0, 6, 12, 24, and 48 hours in a series of experiments. Number of emerged seed was recorded daily, to obtain emergence dynamics. No significant differences were observed in seed coat adherence among treatments. The longest duration of scarification However, enhanced emergence as compared to the control in three of four experiments. These data support earlier suggestions that a thick or hard seed coat is a factor contributing to poor germination and emergence of triploid watermelons.

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“…Triploids result from breeding between a tetraploid watermelon, as the female parent, and a diploid watermelon, as the male parent. Triploid watermelon does not produce sufficient pollen for fertilization; thus the production of triploid seedless fruits requires a diploid plant for pollen (Maynard and Elmstrom, 1992;Zhang, 2004).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Seed Germination and Uniformity in Triploid Watermelon (Citrullus lanatus (Thunb.) Matsum. and Nakai)

Phat¹,

Sheikh²,

Lim³

et al. 2015

HST

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One of the main factors restricting production of triploid seedless watermelon is poor germination due to weak embryos, thick seed coats, and larger air spaces. This study was carried out to investigate the priming effects of different concentrations of chemicals, including hydrogen peroxide (H2O2), fusicoccin, and gibberellic acid (GA) on germination and seedling uniformity of triploid watermelon (Citrullus lanatus). Three commercial triploid cultivars, Seedless Plus, Sinus, and Sizero, were pretreated with water and different levels of H2O2 (2 and 4%), fusicoccin (FC: 1, 5, and 10 µM), and GA (1, 5, and 10 µM). The present findings helped to find optimal priming conditions for improving germination of triploid watermelon. Treatment with 5 µM GA and hydropriming helped to break seed dormancy, enhancing the final germination percentages in all triploid cultivars and increasing the germination index in Sizero. These seed-priming treatments could be used on large scale for industrial applications. Moreover, hydropriming provides a simple, effective, and costless method to improve seed germination and seedling vigor of Sinus and Sizero varieties.

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Triploid Watermelon Production Practices and Varieties

Cited by 33 publications

References 0 publications

Maximum Potential Vegetative and Floral Production and Fruit Characteristics of Watermelon Pollenizers

Maximum Potential Vegetative and Floral Production and Fruit Characteristics of Watermelon Pollenizers

Emergence of `Genesis' Triploid Watermelon following Mechanical Scarification

Enhancement of Seed Germination and Uniformity in Triploid Watermelon (Citrullus lanatus (Thunb.) Matsum. and Nakai)

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