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Genetic Study of Heat Tolerance; Size of Stigma, Style and Ovary in the Tomato, Lycopersicon Esculentum

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Genetic Study of Heat Tolerance; Size of Stigma, Style and Ovary in the Tomato, Lycopersicon Esculentum Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1980 Genetic Study of Heat Tolerance; Size of Stigma, Style and Ovary in the Tomato, Lycopersicon Esculentum. Hanna Yacoub Hanna Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Hanna, Hanna Yacoub, "Genetic Study of Heat Tolerance; Size of Stigma, Style and Ovary in the Tomato, Lycopersicon Esculentum." (1980). LSU Historical Dissertations and Theses. 3484. https://digitalcommons.lsu.edu/gradschool_disstheses/3484 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. 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Requests can be made to our Dissertations Customer Services Department. 5. Some pages in any document may have indistinct print. In all cases we have filmed the best available copy. University Microfilms International 300 N. ZEEB ROAD, ANN ARBOR, Ml 48106 18 BEDFORD ROW, LONDON WC1R 4EJ, ENGLAND 80217^6 HANNA, HANNA YACOUB GENETIC STUDY OF HEAT TOLERANCE; SIZE OF STIGMA, STYLE AND OVARY IN THE TOMATO, LYCOFERSICON ESCULENTUM The Louisiana State University and Agricultural and Mechanical Col. ., PH.D. 1980 University Microfilms International 300 N. Zeeb Road, Ann Arbor, MI 48106 18 Bedford Row, London WC1R 4EJ, England PLEASE NOTE: In all cases this material has been filmed in the best possible way from the available copy. Problems encountered with this document have been identified here with a check mark . 1. Glossy photographs ^ 2. Colored illu stratio n s _________ 3. Photographs with dark background ^ 4. Illustrations are poor copy _________ 5. °rint shows through as thereis text on both sides of page ____________ 6. Indistinct, broken or small print on several pages ___________ throughout 7. Tightly bound copy with print lost in spine _________ 8. Computer printout pages with indistinct print _________ 9. Page(s) ______ lacking when material received, and not available from school or author _________ 10. Page(s) _________ seem to be missing in numbering only as text follows _________ 11. Poor carbon copy _________ 12. Not original copy, several pages with blurred type _________ 13. Appendix pages are poor copy _________ 14. Original copy with light type _________ 15. Curling and wrinkled pages _________ 16. Other Universiiv M iard T iim s International 200 \ Z=== PQ. ANN AH3QP Ml JS-0 6 ‘313! 761-4700 GENETIC STUDY OF HEAT TOLERANCE; SIZE OF STIGMA, STYLE AND OVARY IN THE TOMATO, LYCOPERSICON ESCULENTUM A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfilment of the requirements For the degree of Doctor of Philosophy in The Department of Horticulture by Hanna Yacoub Hanna B.S., The High Agricultural Institute, El Minya, Egypt, 1963 M.S., Assiut University, Egypt, 1972 May 1900 ACKNOWLEDGMENTS I wish to express my appreciation to Dr. Teme P. Hernandez for directing this research study. His guidance, encouragement, and sincere interest have been most helpful. I am also very grate­ ful to Dr. Donald W. Newsom, Head of The Department of Horticulture for his assistance v/hich not only enabled me to complete this work, but also to regain sight in one of my eyes by miracle surgery conducted by Dr. Herbert E. Kaufman, one of the finest corneal surgeons in the world and Head of The Department of Opthalmology at L.S.fJ. Special thanks are extended to Dr. Merlin T. Henderson, Dr. Kenneth L. Koonce for their valuable help in the statistical analysis of the data, to Dr. James F. Fontenot, Dr. Roysell J. Constantin for helping me in many ways. TABLE OF CONTENTS Page ACKNOWLEDGEMENTS....................................................................................... ii TABLE OF CONTENTS..................................................................................... H i LIST OF TABLES............................................................................................ iv LIST OF FIGURES.......................................................................................... viii ABSTRACT......................................................................................................... ix INTRODUCTION................................................................................................ 1 LITERATURE REVIEW...................................................................................... 3 MATERIALS AND METHODS............................................................................. 19 EXPERIMENTAL RESULTS............................................................................... 31 Test 1 - Germplasm Experiment ................................................... 31 Test 2 - Dial lei Experiment ........................................................ 49 Test 3 - Study of Morphological Abnormalities of Flowers, Fruit Set and Inheritance of Stigma and Style Diameter and Ovary - Shape................................................................................. 62 DISCUSSION..................................................................................................... 84 SUMMARY........................................................................................................... 92 LITERATURE CITED........................................................................................ 96 AUTOBIOGRAPHY.............................................................................................. 101 in* ♦ • LIST OF TABLES Table Page 1. Weekly minimum, maximum and average temperature (C) during a 13 week period in Summer 1978 and Spring 1979 ......................................................................... 39 2. A comparison of mean percentage fruit set of six tomato cultivars in two seasons .............................................. 40 3. Statistical comparison of each of six tomato cultivars between seasons for mean percentage fruit se t............................................................................................. 40 4. Mean percentage normal flowers for tomato cultivars in two seasons .................................................................................. 41 5. Mean percentage flower drop for each of six tomato cultivars in two seasons ............................................................... 41 6. Statistical comparison of each of six tomato cu lti­ vars between seasons for mean percentage flower drop........................................................................................................ 42 7. Mean percentage dormant ovaries for each of six tomato cultivars in two seasons .............................................. 42 8. Statistical comparison of each of six tomato cu lti­ vars between seasons for percentage dormant ovaries ................................................................................................. 43 9. Mean fruit weight for each of six tomato cultivars in two seasons .................................................................................. 43 10. Statistical comparison of each of six tomato cultivars between seasons for mean fru it weight ........... 44 11. Mean number of seed per fruit for each of six tomato cultivars in two seasons .............................................. 44 12. Statistical comparison of each of six tomato cultivars between seasons for mean number of seeds per fr u it ............................................................................................. 45 13. Simple correlation coeffecient between fru it weight and seed number within each of six tomato culti.vars for two seasons
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