It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
The correct option is A Auxin and Ethylene
The correct option is A.
Explanation for Correct answer:
- Auxin promotes pineapple flowering, and ethylene promotes pineapple flowering and fruit-set synchronization.
- Ethylene, a gaseous plant hormone, is responsible for initiating reproductive development in pineapple.
Explanation for Incorrect answer:
Option B:
1. Gibberellin and cytokinin improved some pineapple fruit quality properties.
2. The best treatment for improving pineapple harvest index and fruit quality was 100 ppm gibberellin combined with 24 ppm cytokinin.
Option C:
1. Abscisic acid (ABA) and gibberellins (GAs) are well-known phytohormones involved in Arabidopsis seed germination regulation.
2. These two hormones have opposing effects on seed germination.
Option D:
In the regulation of the bud outgrowth pattern by light intensity, cytokinins and abscisic acid act antagonistically.
Final answer:
1. Auxin promotes the development of plant male reproductive organs, whereas ethylene inhibits it.
2. Both auxin and ethylene promote the development of plant female reproductive organs, as well as pollen germination and pollen tube growth.
Auxin and Ethylene
The correct option is A.
Explanation for Correct answer:
- Auxin promotes pineapple flowering, and ethylene promotes pineapple flowering and fruit-set synchronization.
- Ethylene, a gaseous plant hormone, is responsible for initiating reproductive development in pineapple.
Explanation for Incorrect answer:
Option B:
1. Gibberellin and cytokinin improved some pineapple fruit quality properties.
2. The best treatment for improving pineapple harvest index and fruit quality was 100 ppm gibberellin combined with 24 ppm cytokinin.
Option C:
1. Abscisic acid (ABA) and gibberellins (GAs) are well-known phytohormones involved in Arabidopsis seed germination regulation.
2. These two hormones have opposing effects on seed germination.
Option D:
In the regulation of the bud outgrowth pattern by light intensity, cytokinins and abscisic acid act antagonistically.
Final answer:
1. Auxin promotes the development of plant male reproductive organs, whereas ethylene inhibits it.
2. Both auxin and ethylene promote the development of plant female reproductive organs, as well as pollen germination and pollen tube growth.
