Staminate and Pistillate Flower Production of Summer Squash in Response to Planting Date

NeSmith, D. Scott; Hoogenboom, Gerrit; Groff, David

doi:10.21273/hortsci.29.4.256

Cited by 20 publications

(11 citation statements)

References 7 publications

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“…In eight cucurbit species, including C. pepo, Whitaker (1931) reported staminate flowers outnumbered pistillate flowers at all times and often reached anthesis 1 week prior to the first pistillate blossom. NeSmith et al (1994) found that floral sex ratios varied among summer squash [C. pepo var. melopepo (L.) Alef.]…”

Section: Resultsmentioning

confidence: 99%

Flowering and Fruit Set of Pumpkin Cultivars under Field Conditions

Stapleton¹,

Wien²,

Morse³

2000

HortSci

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Field experiments with six pumpkin cultivars (Cucurbita pepo L.) were conducted in Ithaca, N.Y., in 1992 and 1993 to characterize the patterns of flowering and fruit set. Plants of all cultivars produced the greatest number of female flowers and exhibited the highest rate of fruit set 35-45 days after transplanting, during the first 2 weeks of greatest flower production (“peak bloom”). During the 3 weeks of peak bloom, each plant produced an average of 3.4 pistillate flowers in 1992 and 5.4 in 1993, and fruit set was 50.9% in 1992 and 74.6% in 1993, yielding 1.7 and 4.0 fruit per plant, respectively. In 1994, flower production was further studied with the cultivar Wizard. Flowers were produced in a ratio of 33 staminate to 1 pistillate flower over the entire season. Climatic conditions appeared to be secondary to physiological factors in affecting flowering and fruit set during all three seasons. Characterization of fruit set patterns in pumpkin may aid producers in scheduling pollination services and predicting yields.

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Section: Resultsmentioning

confidence: 99%

Flowering and Fruit Set of Pumpkin Cultivars under Field Conditions

Stapleton¹,

Wien²,

Morse³

2000

HortSci

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“…With the recent concern about the pollination crisis in crop plants 24,25 , the highly skewed flower sex expression may further affect crop production in monoecious plant species. We have assessed the flower sex expression during the peak flowering (pistillate flowering and fruiting) period of the respective crop species, which is likely to vary with different phases of flowering, seasons and plant maturity 26,27 . Studies that have investigated variables affecting yield in cucurbit plants have rarely incorporated flower sex expression in their models 4,6,9,11 .…”

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confidence: 99%

Flower Sex Expression in Cucurbit Crops of Kerala: Implications for Pollination and Fruitset

Anusree¹,

Abhina²,

Lishiba³

et al. 2015

Current Science

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Cucurbits are monoecious in general; the female flowers occur lower than the male flowers in fields. Often farmers are not aware of this type of sex expression, and are concerned about the low fruit set despite 'profuse' flowering and abundant pollinators in the crop fields. We assessed flower sex expression during the peak (female) flowering and fruiting period in three widely grown cucurbit crops, Cucurbita maxima, Benincasa hispida and Momordica charantia in a village ecosystem of northern Kerala. Sex expression was male-biased in two species. In M. charantia, 97.65% of the flowers produced were staminate. In this condition, the farmers should ensure that effective pollinators are available in plenty to achieve maximum fruit set from the low number of pistillate flowers. C. maxima produced an average of 75.39% of staminate flowers, which varied across the fields; three fields consistently produced 100% pistillate flowers in all the 14 days of observations. The fruit set in fields with only pistillate flowers is likely to be affected by pollen limitation, rather than pollinator limitation. These fields may require supplementary manual pollination to enhance the fruit set. B. hispida produced more or less equal proportion of staminate and pistillate flowers across the fields and days studied. This kind of information may help the farmers to manage pollination services in their fields as well as to predict a realistic yield.

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“…The higher temperature during growth period in 2011 enhanced the early production of pistillate flowers leading to early harvesting. Nesmith & Hoogenboom (1994) also stated that production of pistillate flowers in summer squash was accelerated by high temperature. Availability period of vegetable marrow was also influenced significantly by seedlings age.…”

Section: Resultsmentioning

confidence: 99%

Impact of seedlings age on vegetable Marrow production

Jellani

Ullah

Ali³

et al. 2015

SAARC J Agric

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A study was conducted at the research field of Horticultural Research Institute, National Research Center (NARC), Islamabad, Pakistan during two consecutive years of 2011 and 2012 to compare the performance of seedlings raised in polythene bags with traditional direct seeding in respect of early harvesting and profitability. Seedlings of three different ages (40, 50 and 60 days old) of vegetable marrow were compared with traditional direct seeded crop. Transplanted seedlings of vegetable marrow produced fruits 36-38 days earlier and availability period of 34-38 days longer than direct seeded crop. Similarly, higher fruit plant-1, fruit weight plant-1 and fruit yield ha-1 were obtained from seedling treatments. Averaged over years, 50-69% increase in yield and 64-100% increase in profit were recorded in seedling treatments than direct seeded crop. Among seedling ages, 60 days old seedlings were the best performer. The overall results of two years study revealed that seedling transplantation was superior to traditional direct seeded practice of growing vegetable marrow and among those 60 days old seedlings was the best in respect of yield components, fruit yield and profit.SAARC J. Agri., 13(1): 215-222 (2015)

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Staminate and Pistillate Flower Production of Summer Squash in Response to Planting Date

Cited by 20 publications

References 7 publications

Flowering and Fruit Set of Pumpkin Cultivars under Field Conditions

Flowering and Fruit Set of Pumpkin Cultivars under Field Conditions

Flower Sex Expression in Cucurbit Crops of Kerala: Implications for Pollination and Fruitset

Impact of seedlings age on vegetable Marrow production

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