The effects of soil type, sulfur fertility, and maturity on the pungency of 'Texas Grano 1015Y' onions /
(Allium cepa L.) grown in the Lower Rio Grande Valley of
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (Allium cepa L.) grown in the Lower Rio Grande Valley of 4.03 limol-g-I fresh wt. However, the first harvest had a A field study was conducted on 'Texas Grano 1015Y' onions and sucrose, glucose, and fructose concentrations. Maturity bulbing process, and two S rates (O kg S/ha and 22.4 kg concentration for pungency measurement, percent dry matter, concentration of 1.9 gmol.g-1 fresh wt. and the high S concentration, with the loam field producing onions higher in corresponding increase in glucose and fructose. The S decreased during the last two sampling dates resulting in a developed pyruvic acid concentrations ranged from 3.13 to effects of S fertility on onion pungency. Cloned plants were fertility treatment had no effect on any of the factors five maturities from beginning of bulbing throughout the generally decreased as bulbs m,7taFed (9.1 to 697o DM) with a glucose. A greenhouse study was also conducted to test the increasing trend of pyruvic acid over the bulbing process. influenced all variables tested. Percent dry matter (DM) maturity (39.3 to 46.5 mg-g-I fresh wt.). However, sucrose measured. The only influence by soil type was sugar of pyruvic acid. However, bulb weight was greatly reduced by onion bulbs from the low S treatment. Percent S in leaf pyruvic acid content of 5.54 AMOI-G-I fresh wt. There was an S treatment (2 ppm) produced onions with a pyruvic acid S/ha). Laboratory analysis included pyruvic acid slight increase at maturity (7 4110 DM). Enzymatically Texas. Treatments included two soil types (clay and loam), the low S treatment. Sugars were also slightly higher in tissue also showed a deficiency in the low S grown plants. Total sugars tended to increase beginning with the second treatment (123 ppm) onions contained 5.5 timol-g-I fresh wt. used to avoid genetic variation between treatments. The low |
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| Item Description: | "Major subject: Horticulture". Vita. |
| Physical Description: | ix, 43 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |