Advantages and Disadvantages of Seed Propagation Quiz and Flashcards

What is the main purpose of the stock/root stock in grafting?

Which type of grafting involves inserting young, actively growing woody plants into a T cut?

In budding, why is a single bud from the desired scion used instead of an entire scion?

What is the main difference between grafting and budding techniques?

What is a potential disadvantage of seed propagation compared to grafting and budding?

Which practical consideration could be a disadvantage of grafting and budding compared to seed propagation?

What is the purpose of holding cut surfaces together tightly during grafting?

Why is it important to maintain the graft at proper environmental conditions?

What technique is utilized in micropropagation for producing new plants?

What is the main purpose of acclimatization in micropropagation?

What are the advantages of seed propagation over vegetative propagation methods like budding and grafting?

Why is it essential to protect cut surfaces from desiccation after grafting?

What is a major advantage of seed propagation mentioned in the text?

Which process is a risk associated with, except in tissue culture which uses meristems?

What is a major disadvantage of seed propagation mentioned in the text?

Which method can hasten the slow growth of seed-raised plants of some trees and shrubs?

Why are some seeds difficult to germinate according to the text?

Which characteristic is NOT mentioned as a disadvantage of seed propagation?

Hybrid seed production allows for additional vigor and rejuvenation.
F1 generation hybrid seeds are produced by crossing two pure bred strains, resulting in uniformity and hybrid vigor.
Seeds provide a method of starting disease-free plants, as viral diseases are not usually transmitted through seeds.
Seedlings are required in nurseries to provide rootstock with desirable characters, such as resistance to root diseases.

Variability in heterozygous plants results in variation in resulting progenies due to genetic segregation.
Loss of uniformity over generations poses a major disadvantage in the cut flower industry.
Late maturity and slow growth are common issues, with some plants taking years to mature and flower.
Some seeds are difficult to germinate due to dormancy, and some cultivated plants do not produce seeds at all.

Rapid healing of the graft union is necessary, requiring the scion to be supplied with water and nutrients from the stock.
Grafts should be maintained at proper environmental conditions, including optimal temperature (24-29°C), high humidity, and darkness.
Cut surfaces must be protected from desiccation, and can be covered with tape, grafting wax, etc.

Micropropagation involves exposing a part of a plant (cell, tissue, organ) to specific conditions under aseptic environment to produce a new set of plants similar to the mother plant.
There are four basic developmental stages in micropropagation: establishment of an explant culture, multiplication of the propagule, regeneration, and acclimatization.

Stock/Root stock provides the root system and forms the lower portion of the graft.
Scion is the aerial part of the combination, contributing to the union with the root stock.
Grafting involves different types, including tongue or whip, crown, wedge, side, and approach grafting.
Budding involves attaching a single bud from the desired scion to the root stock, with different techniques including T budding and patch budding.