Characterization of ethylene biosynthesis in cotton (Gossypium hirsutum L.) fruiting form as a means to improve early season fruit set /
a minor role in the overall ethylene production at anthesis.
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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: | a minor role in the overall ethylene production at anthesis. activities were minimal in the bracts at all stages of flower activity. At anthesis, ACC synthase activity fell to its activity. In comparison to the ovary samples, ACC levels in and remained low at anthesis due to an increase in ACC anthesis. Several factors led to the sharp increase in ACC bracts were higher, ACC synthase activity was similar but ACC carboxylic acid (MACC) concentration and ACC oxidase activity concomitant increase in 1(malonyamino)-cyclopropane-l- content in the ovary at anthesis. First, there was a day post-anthesis). Comparing bracts, the ACC concentration day pre-anthesis samples. This suggest that the bracts play decrease in ACC content. Second, ACC synthase activity rose development and both ACC synthase and oxidase activities of fruiting forms. This level fell in 1 day pre-anthesis bracts in the 1 day peranthesis flower bud, which led to a subtle level then fell back to its starting point at 3 day post- may suggest that the expression of the ACC synthase gene in minimum and ACC oxidase activity fell to its starting Next, ACC oxidase activity fell sharply and reached its ovary is the tissue responsible for the increase in ethylene oxidase activity and a concomitant decrease in ACC synthase oxidase activity was about fivefold lower for 3 day pre and 1 pre-anthesis, then reached its maximum at anthesis. This production at anthesis. Since ACC synthase and ACC oxidase sharply at this point and reached its maximum at anthesis. stages (3 day pre-anthesis, 1 day preanthesis, anthesis, 3 starting point at anthesis. These data clearly show that the synthase gene in the bracts. The ACC concentration of the ovary dipped somewhat at 1 day The metabolism of I-aminocyclopropane-l-carboxylic acid (ACC) the ovary tissue is significantly different than the ACC the ovary were maximal just prior to and at anthesis, this was at its highest level in those of 3 day pre-anthesis was investigated in cotton fruiting forms harvested at four |
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| Item Description: | "Major subject: Plant Physiology". Vita. |
| Physical Description: | xii, 62 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |