1. A solar tracking apparatus for use with a power driving apparatus, the solar tracking apparatus comprises:
a memory unit for recording a first solar image;
an image capturing unit for capturing a second solar image; and
an processing unit for obtaining a difference between the first solar image and the second solar image;
wherein the processing unit activates the power driving apparatus in response to the difference.
2. The solar tracking apparatus of claim 1, wherein the first solar image is a default reference solar image, and the second solar image is a solar image taken on the spot.
3. The solar tracking apparatus of claim 1, wherein the processing unit further calculates a first solar center from the first solar image and a second solar center from the second solar image, and the difference is obtained by comparing the first solar center with the second solar center.
4. The solar tracking apparatus of claim 1, wherein the difference is recorded in the memory unit to provide the processing unit to activate the power driving apparatus in advance.
5. The solar tracking apparatus of claim 1, further comprising an optical unit for focusing the sun light onto the image capturing unit to form the second solar image.
6. The solar tracking apparatus of claim 5, wherein the optical unit is a lens.
7. The solar tracking apparatus of claim 5, wherein the optical unit is a wide-angle lens.
8. The solar tracking apparatus of claim 1, wherein the image capturing unit is a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).
9. The solar tracking apparatus of claim 1, wherein the image capturing unit further captures a plurality of second solar images, and each second solar image is taken after a predetermined time interval.
10. A solar power generation system includes:
a solar panel;
a power driving apparatus for adjusting the solar panel; and
a solar tracking apparatus including:
a memory unit for recording a first solar image;
an image capturing unit for capturing a second solar image; and
an processing unit for obtaining difference between the first solar image and the second solar image;
wherein the processing unit activates the power driving apparatus in response to the difference so that the solar panel can be aligned towards the sun to gather sun light.
11. The system of claim 10, wherein the first solar image is a default reference solar image, and the second solar image is a solar image taken on the spot.
12. The system of claim 10, wherein the processing unit further calculates a first solar center from the first solar image and a second solar center from the second solar image, and the difference is obtained by comparing the first solar center with the second solar center.
13. The system of claim 10, wherein the difference is recorded in the memory unit to provide the processing unit to activate the power driving apparatus in advance.
14. The system of claim 10, further comprising an optical unit for focusing the sun light onto the image capturing unit to form the second solar image.
15. The system of claim 14, wherein the optical unit is a lens.
16. The system of claim 14, wherein the optical unit is a wide-angle lens.
17. The system of claim 10, wherein the image capturing unit is a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).
18. The system of claim 10, wherein the image capturing unit further captures a plurality of second solar images, and each second solar image is taken after a predetermined time interval.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A method for producing a fertile transgenic plant, comprising the steps of:
(a) introducing one or more genetic component(s) one desires to introduce into the genome of a plant by co-culturing a regenerable plant cell or tissue with Agrobacterium containing said genetic component(s);
(b) co-culturing said Agrobacterium and regenerable plant cells or tissues of step (a) under conditions that decrease the weight of said Arobacterium-inoculated explant;
(c) identifying or selecting a transformed cell line; and
(d) regenerating a fertile transgenic plant therefrom.
2. The method of claim 1 wherein the regenerable cell or tissue is precultured prior to step (a).
3. The method of claim 1 wherein the conditions for co-culture comprise limitation or removal of moisture from the Agrobacterium-inoculated explant wherein the weight of the explant is reduced by not more than 50%.
4. The method of claim 3 wherein the weight of the Agrobacterium-inoculated explant is reduced by up to 40%.
5. The method of claim 3 wherein the weight of the Agrobacterium-inoculated explant is reduced by up to 30%.
6. The method of claim 3 wherein the moisture-limitation or removal period after inoculation with Agrobacterium is greater than one hour.
7. The method of claim 3 wherein the moisture-limitation or removal period after inoculation with Agrobacterium is from one hour to about 6 days.
8. The method of claim 3 wherein the moisture-limitation or removal period after inoculation with Agrobacterium is from about one day to about 4 days.
9. The method of claim 3 wherein the moisture-limitation or removal period after inoculation with Agrobacterium is from about one day to about 3 days.
10. The method of claim 1 wherein the transgenic plant is a monocot.
11. The method of claim 1 wherein the transgenic plant is a dicot.
12. The method of claim 10 wherein the monocot is wheat, corn, or rice.
13. The method of claim 10 wherein the monocot is wheat.
14. The method of claim 10 wherein the monocot is corn.
15. The method of claim 10 wherein the monocot is rice.
16. The method of claim 11 wherein the dicot is soybean.