Growth and Consumer Evaluation of Cucumis sativus L. Cultivated in Controlled Environments

 

Table Of Contents


  • <p>&nbsp;                 <b>TABLE OF CONTENTS</b></p><p>&nbsp;ACKNOWLEDGEMENTS-ii&nbsp;</p><p>ABSTRACT -viii</p><p>LIST OF TABLES-x&nbsp;</p><p>LIST OF FIGURES-xiii&nbsp;</p><p>LIST OF ABBREVIATIONS-xiv&nbsp;</p><p><b>

Chapter ONE

INTRODUCTION

  • &nbsp;</b></p><p>
  • 1.0INTRODUCTION-1</p><p>
  • 1.1Cucumber Production-1</p><p>&nbsp;
  • 1.2Field Production-1</p><p>
  • 1.3Greenhouse Production-1&nbsp;</p><p>
  • 1.4Diseases-2&nbsp;</p><p>
  • 1.5Cucumber Growth Habit-3 &nbsp;</p><p>1.
  • 5.1Classes-4&nbsp;</p><p>1.
  • 5.2Types-5&nbsp;</p><p>1.
  • 5.3Cucumber Flowering-5&nbsp;</p><p>1.
  • 5.4Sex expression-5&nbsp;</p><p>1.
  • 5.5Fruit Set-6 <br></p><p>
  • 1.5Overall Objectives-8</p><p>
  • 1.6Literature Cited-9&nbsp;</p><p><b>

Chapter TWO

LITERATURE REVIEW

  • </b></p><p>
  • 2.0PLANT GROWTH EVALUATION OF HYDROPONIC GREENHOUSEGROWN CUCUMIS SATIVUS L.&nbsp;</p><p>
  • 2.1Literature Review-14&nbsp;</p><p>
  • 2.2Objective-15&nbsp;</p><p>
  • 2.3Materials and Methods-15&nbsp;</p><p>2.4&nbsp; Plant Material-15&nbsp;</p><p>2.5&nbsp; Plant Culture-16</p><p>
  • 2.6Statistical Analyses-18&nbsp;</p><p>
  • 2.7Results and Discussion-18</p><p>2.
  • 7.1Screening Trial-18</p><p>2.7.2&nbsp; Biomass Trials-20&nbsp;</p><p>
  • 2.8Conclusion-23&nbsp;</p><p>
  • 2.9Literature Cited-24&nbsp;</p><p><b>

Chapter THREE

RESEARCH METHODOLOGY

  • </b></p><p>
  • 3.0PLANT GROWTH EVALUATION OF HYDROPONIC CUCUMIS SATIVUS L. GROWN IN A GROWTH CHAMBER AT 2000 PPM CO2&nbsp;</p><p>
  • 3.1Literature Review-26&nbsp;</p><p>
  • 3.2Objective-27&nbsp;</p><p>
  • 3.3Materials and Methods-27&nbsp;</p><p>
  • 3.4Plant Material-27</p><p>3.
  • 4.1Growth Parameters-27&nbsp;</p><p>
  • 3.5Data Collection-28</p><p>3.
  • 5.1Statistical Analyses-30&nbsp;</p><p>
  • 3.6Results and Discussion-30&nbsp;</p><p>3.
  • 6.1Trial 1-30&nbsp;</p><p>3.
  • 7.2Trial 2-31 <br></p><p>
  • 3.8Conclusions-32&nbsp;</p><p>
  • 3.4Literature Cited-33&nbsp;</p><p><b>

Chapter FOUR

DATA PRESENTATION AND ANALYSIS

  • &nbsp;</b><br></p><p>
  • 4.0CONSUMER EVALUATION OF HYDROPONIC, GREENHOUSE-GROWN, FRESH CUCUMIS SATIVUS L.</p><p>
  • 4.1Literature Review-34&nbsp;</p><p>
  • 4.2Objectives-34&nbsp;</p><p>
  • 4.3Materials and Methods-35</p><p>
  • 4.4Hydroponic Cucumber Lab-35&nbsp;</p><p>
  • 4.5Plant Material-35&nbsp;</p><p>4.
  • 5.1Plant Culture-36&nbsp;</p><p>
  • 4.6Survey Evaluation-37&nbsp;</p><p>4.
  • 6.1Participants-37&nbsp;</p><p>4.
  • 6.2Sample Preparation-39&nbsp;</p><p>4.
  • 6.3Statistical Analyses-40&nbsp;</p><p>
  • 4.7Results and Discussion-40&nbsp;</p><p>4.
  • 7.1Survey Evaluation-40&nbsp;</p><p>4.
  • 7.2Sensory Evaluation-43&nbsp;</p><p>
  • 4.8Conclusion-45&nbsp;</p><p>
  • 4.9Literature Cited-47&nbsp;</p><p><b></b><b>

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • </b><br></p><p>5.0&nbsp; OVERALL CONCLUSIONS-48 <br></p><p> <b>APPENDICES&nbsp;</b></p><p>&nbsp;A. CONSUMER EVALUATION SURVEYS AND RESPONSES-49&nbsp;</p><p>&nbsp;B. NUTRIENT SOLUTION COMPOSITION-68 <br></p>

Project Abstract

<p>                 <b>ABSTRACT&nbsp;</b><br></p><p>Cucumber is a commonly consumed vegetable that is growing in popularity. Recently, there has been an increase in cucumber cultivation in controlled environments. The overall objectives of this research were to (1) identify a cucumber cultivar for optimal growth in a controlled environment, (2) investigate the effects of elevated CO2 on fruit production and plant growth, and (3) evaluate consumer perception of cucumber. Ten Cucumis sativus L. cultivars were hydroponically, greenhouse-grown in a randomized block design to evaluate fruit production and plant growth. Of the cultivars screened, the gynoecious, parthenocarpic cultivars produced the most fruit; of which, the cultivar ‘Rocky’ was chosen as the elite cultivar for optimal growth in a controlled environment. ‘Rocky’ was chosen for evaluation in the growth chamber trials because it is a quick-growing cultivar that yields a heavy, concentrated fruit set, a relatively high harvest index, a low disease incidence, and is aesthetically pleasing. The elite cultivar ‘Rocky’ was grown at 400 and 2000 ppm CO2 to evaluate fruit production and plant growth. Plants grown at 2000 ppm CO2 had an increase in vegetative and reproductive growth when compared to plants grown at 400 ppm CO2. As part of an outreach program, Texas Tech University horticulture students participated in a Hydroponic Cucumber Lab in which they were able take care of cucumber plants and taste the cucumbers they grew. In order to evaluate consumer perception of cucumber, the horticulture students were administered a survey, consisting of a pre- and post-test, which asked students demographic questions and questions about their cucumber eating habits in general. A majority of the students indicated they liked cucumbers and the post-test showed that the student’s perception of cucumber had changed. Sensory panels were conducted to evaluate appearance and taste perception of cucumber. Two cultivars were evaluated ‘Rocky’ and ‘Socrates’. Students indicated they liked the appearance of ‘Socrates’ more than ‘Rocky’. ‘Socrates’ looks more like a traditional slicer sold in supermarkets; ‘Rocky’ is a non-traditional pickler that is harvested at a shorter length and has a smooth yellowish skin. Overall, students indicated they liked the taste of ‘Rocky’ and ‘Socrates’. <br></p>

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