Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 317

Clonally propagated species may be divided into several broad categories on the basis of economic use:

 Those cultivated for a vegetative product – Important species vegetatively cultivated for a vegetative product include sweet potatoes, yams, cassava, sugarcane, and Irish potatoes. These species tend to exhibit certain reproductive abnormalities. For example, flowering is reduced, and so is fertility. Some species such as potatoes have cytoplasmic male sterility. Sometimes, flowering is retarded (e.g. by chemicals) in production (e.g. in sugarcane).

 Those cultivated for a fruit – Plants in this category include fruit trees and cane fruits. Examples include apple, pear, grape, strawberry, and banana.

 Those cultivated for floral products – Plant in this category include tulips and many cut flower species.