Abscisic Acid and Cutout in Cotton
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چکیده
منابع مشابه
Abscisic Acid and cutout in cotton.
A decline in growth, flowering, and boll (fruit) retention is referred to as cutout in cotton (Gossypium hirsutum L.). Fruit load affects cutout, possibly through hormonal effects. Experiments were conducted to test the hypothesis that fruits are a source of abscisic acid (ABA) that moves into fruiting branches and growing points where it inhibits growth, flowering, and boll retention. Removal ...
متن کاملMovement of (RS)-Abscisic Acid in the Cotton Explant.
The movement of abscisic acid in the cotton explant was investigated by bioassay and radioisotope techniques. The rate of movement was 20 to 30 millimeters per hour with most of the abscisic acid moving unchanged through the explant into the basal agar. The rate of movement was the same through the abscission zone as through petiole tissue. Patterns of accumulation and metabolic products are di...
متن کاملFruit age and changes in abscisic Acid content, ethylene production, and abscission rate of cotton fruits.
The relationships of fruit age, abscisic acid (ABA) concentration, ethylene evolution, and abscission rates were studied in an effort to determine why cotton (Gossypium hirsutum L., cv. Deltapine 16) fruits rarely abscise more than 15 days after anthesis. Because abscission of cotton fruits is increased by conditions that limit photosynthesis, greenhouse-grown plants with fruits of various ages...
متن کاملStomatal responses to water stress and to abscisic Acid in phosphorus-deficient cotton plants.
Cotton (Gossypium hirsutum L.) plants were grown in sand culture on nutrient solution containing adequate or growth-limiting levels of P. When water was withheld from the pots, stomata of the most recently expanded leaf closed at leaf water potentials of approximately -16 and -12 bars in the normal and P-deficient plants, respectively. Pressure-volume curves showed that the stomata of P-deficie...
متن کاملAbscisic Acid: correlations with abscission and with development in the cotton fruit.
Abscisic acid was measured in developing cotton fruit (Gossypium hirsutum) by means of gas-liquid chromatography. High levels of abscisic acid occurred in correlation with abortion and abscission of young fruit, with low germination of immature seed, and with senescence and dehiscence of mature fruit. Declining or low levels of abscisic acid occurred in correlation with the period of most rapid...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1985
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.77.1.16