231. Why is light important for germination of many seeds?
- Light provides information about seed position and is required for germination in some species.
232. What effect does red light have on seed germination in some species?
- Red light induces germination by promoting GA synthesis.
233. In what species is seed germination inhibited by continuous light?
- Onion and leek.
234. How can physiological dormancy be alleviated in beet seeds?
- Leaching by exposing seeds to running water.
235. Why are alternating temperatures favored for germination in some species?
- They mimic fluctuating temperature signals in soil or vegetation.
236. What do priming treatments enhance in seed germination?
- Germination percentage, uniformity, and rate.
237. How is the shield piece prepared for budding?
- The shield piece should be thin, thick enough to have some rigidity.
238. What is the purpose of the 2nd cut in the budding process?
- To permit the removal of the shield piece after the initial cut.
239. How is the scion bud inserted into the stock during budding?
- The bud is pushed downward under the two raised flaps of bark.
240. Why is inverted T budding preferred in areas with high rainfall?
, - To prevent excess water from entering and hindering healing.
241. Which species are commonly propagated using inverted T budding?
- Citrus trees.
242. What is the key consideration for successful patch budding?
- Both stock and scion bark must slip easily.
243. Which tools are used in patch budding technique?
- A double-bladed knife for making cuts through the bark.
244. How is the I-bud created on the rootstock?
- Two parallel cuts joined at their centers by a vertical cut.
245. What is the characteristic of the bud patch in I-budding?
- The side edges of the bud patch may be slanted for a better fit.
246. Describe the process of ring budding.
- A complete ring of bark is removed from both stock and scion to be grafted.
247. Define totipotency in plant cells.
- The ability of plant cells to regenerate into a full plant under favorable conditions.
248. Who coined the term 'totipotency' and in what year?
- Haberlandt in 1902.
249. List two advantages of vegetative propagation.
- True to type, early bearing, overcoming seed dormancy, and virus detection.
- Light provides information about seed position and is required for germination in some species.
232. What effect does red light have on seed germination in some species?
- Red light induces germination by promoting GA synthesis.
233. In what species is seed germination inhibited by continuous light?
- Onion and leek.
234. How can physiological dormancy be alleviated in beet seeds?
- Leaching by exposing seeds to running water.
235. Why are alternating temperatures favored for germination in some species?
- They mimic fluctuating temperature signals in soil or vegetation.
236. What do priming treatments enhance in seed germination?
- Germination percentage, uniformity, and rate.
237. How is the shield piece prepared for budding?
- The shield piece should be thin, thick enough to have some rigidity.
238. What is the purpose of the 2nd cut in the budding process?
- To permit the removal of the shield piece after the initial cut.
239. How is the scion bud inserted into the stock during budding?
- The bud is pushed downward under the two raised flaps of bark.
240. Why is inverted T budding preferred in areas with high rainfall?
, - To prevent excess water from entering and hindering healing.
241. Which species are commonly propagated using inverted T budding?
- Citrus trees.
242. What is the key consideration for successful patch budding?
- Both stock and scion bark must slip easily.
243. Which tools are used in patch budding technique?
- A double-bladed knife for making cuts through the bark.
244. How is the I-bud created on the rootstock?
- Two parallel cuts joined at their centers by a vertical cut.
245. What is the characteristic of the bud patch in I-budding?
- The side edges of the bud patch may be slanted for a better fit.
246. Describe the process of ring budding.
- A complete ring of bark is removed from both stock and scion to be grafted.
247. Define totipotency in plant cells.
- The ability of plant cells to regenerate into a full plant under favorable conditions.
248. Who coined the term 'totipotency' and in what year?
- Haberlandt in 1902.
249. List two advantages of vegetative propagation.
- True to type, early bearing, overcoming seed dormancy, and virus detection.
