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Effect of time of application and varying concentrations of GA3 on the seedlessness of grapes / by Pracha Boonsompong

By:

Boonsompong, Pracha [author]

Material type: Text

TextLanguage: English Publication details: Muñoz, Nueva Ecija : 1984. Cavite State University- Main Campus,Description: 99 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

634.8 B64 1984

Online resources:

Click here to view thesis abstract and table of contents

Abstract: PRACHA BOONSOMPONG, Central Luzon State University, October 1984. Effect of Time of Application and Varying Concentrations of GA, on the Seedlessness of Grapes. Major Professor:; Prof. Danilo T. Eligio The study was conducted to determine the optimum concentration and most suitable time of applying GA, as well as their interaction on the seedlessness of ‘Brazilian Hybrid' grape. The times of application were: Pre-bloom, Full- bloom and Post-bloom while the different concentrations of GA, were: O ppm (control), 50 ppm, 100 ppm, 150 ppm and 200 ppm. Results revealed that application of 150 to 200 ppm of GAz at Full-bloom can reduce the number of seed in the berry by 0.63 which is significantly lower than the number of seeds in the control berries with 2.73 seeds. Moreover, berries with less seeds are longer than berries with more seeds but with reduced diameter. Results also showed that fruit setting decreased when GA, was applied. On the other hand, application of GA, at the later stage of flowering, was observed to be better than early application when higher fruit setting was recorded on Toast-bloom. In terms of yield, the control plants and Frostbloom application yielded the rest of the treatments. In general, however, the ratio between TSS to TA in all the treatments and treatment combinations is high indicating better quality fruits.

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Holdings ( 1 )
Title notes ( 4 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	634.8 B64 1984 (Browse shelf(Opens below))		Link to resource	Room use only	T-1324		00002261

Thesis (M.S. - - Horticulture) Central Luzon State University, Munoz, Nueva Ecija.

Includes bibliographical references.

PRACHA BOONSOMPONG, Central Luzon State University, October 1984. Effect of Time of Application and Varying Concentrations of GA, on the Seedlessness of Grapes. Major Professor:; Prof. Danilo T. Eligio

The study was conducted to determine the optimum concentration and most suitable time of applying GA, as well as their interaction on the seedlessness of ‘Brazilian Hybrid' grape.

The times of application were: Pre-bloom, Full- bloom and Post-bloom while the different concentrations of GA, were: O ppm (control), 50 ppm, 100 ppm, 150 ppm
and 200 ppm.

Results revealed that application of 150 to 200 ppm of GAz at Full-bloom can reduce the number of seed in the berry by 0.63 which is significantly lower than the number of seeds in the control berries with 2.73 seeds. Moreover, berries with less seeds are longer than berries with more seeds but with reduced diameter.

Results also showed that fruit setting decreased when GA, was applied. On the other hand, application of GA, at the later stage of flowering, was observed to be better than early application when higher fruit setting was recorded on Toast-bloom.

In terms of yield, the control plants and Frostbloom application yielded the rest of the treatments. In general, however, the ratio between TSS to TA in all the treatments and treatment combinations is high indicating better quality fruits.

Submitted to the University Library 017/07/1994 T-1324