horti chptr7
問題一覧
1
“The development or improvement of cultivars using conservative tools for manipulating plant genome within the natural genetic boundaries of the species” (Acquaah, 2015).
Conventional Plant breeding
2
▪ Also known as ‘modern plant breeding’.
▪ The use of biotechnology tools to improve the plants’ genetic make-up.
Non conventional Plant Breeding
3
▪ Individual plants are selected based on the phenotype from mixed population, their seeds are bulked and used to grow next generation.
▪ Oldest crop improvement method.
▪ Used in all crop types.
▪ Resulting cultivars are heterogeneous.
Mass selection
4
▪ A large number of plants are selected from a self-pollinated crop.
▪ The selected plants are harvested individually;
▪ The selected plants are grown in individual rows and evaluated;
▪ The best progeny selected, yield tested, and released as a variety.
▪ Mainly used in self-pollinated crops
▪ Resulting cultivars are homogeneous.
Pureline Selection
5
▪ A procedure of selecting superior clones from the mixed population of asexually propagating crops.
▪ Used in asexually-reproduced crops (e.g. sweet potato, pineapple, banana, other fruit tree species).
Clonal
6
A general method which involves reselection generation after generation with interbreeding of selects to provide for genetic recombination.
▪ A cyclic selection that is used to improve the frequency of desirable alleles for a character in a breeding population.
▪ An extension of Mass selection.
▪ Used in all crop types.
Recurrent Selection
7
describes the ancestors (parents, grand parents and so on)
▪ Superior genotypes are selected from segregating generations and proper records of the ancestry of selected plants are maintained in each generation.
▪ Used in self- and cross-pollinated crops.
Pedigree method
8
▪ Also known as “population method”.
▪ A selection procedure in which the segregating population of selfpollinated species is grown in bulk plot (from F1 to F5) with or without selection, a part of the bulk seed is used to grow the next generation and individual plant selection is practiced in F6 or later generations.
▪ Used in all crop types.
Bulk Method
9
▪ A modified form of bulk method.
▪ A breeding procedure with segregating populations of selfpollinated species in which plants are advanced by single seeds from one generation to the next.
▪ Used in self- and cross-pollinated crops.
Single Seed Descent
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30問 • 2年前問題一覧
1
“The development or improvement of cultivars using conservative tools for manipulating plant genome within the natural genetic boundaries of the species” (Acquaah, 2015).
Conventional Plant breeding
2
▪ Also known as ‘modern plant breeding’.
▪ The use of biotechnology tools to improve the plants’ genetic make-up.
Non conventional Plant Breeding
3
▪ Individual plants are selected based on the phenotype from mixed population, their seeds are bulked and used to grow next generation.
▪ Oldest crop improvement method.
▪ Used in all crop types.
▪ Resulting cultivars are heterogeneous.
Mass selection
4
▪ A large number of plants are selected from a self-pollinated crop.
▪ The selected plants are harvested individually;
▪ The selected plants are grown in individual rows and evaluated;
▪ The best progeny selected, yield tested, and released as a variety.
▪ Mainly used in self-pollinated crops
▪ Resulting cultivars are homogeneous.
Pureline Selection
5
▪ A procedure of selecting superior clones from the mixed population of asexually propagating crops.
▪ Used in asexually-reproduced crops (e.g. sweet potato, pineapple, banana, other fruit tree species).
Clonal
6
A general method which involves reselection generation after generation with interbreeding of selects to provide for genetic recombination.
▪ A cyclic selection that is used to improve the frequency of desirable alleles for a character in a breeding population.
▪ An extension of Mass selection.
▪ Used in all crop types.
Recurrent Selection
7
describes the ancestors (parents, grand parents and so on)
▪ Superior genotypes are selected from segregating generations and proper records of the ancestry of selected plants are maintained in each generation.
▪ Used in self- and cross-pollinated crops.
Pedigree method
8
▪ Also known as “population method”.
▪ A selection procedure in which the segregating population of selfpollinated species is grown in bulk plot (from F1 to F5) with or without selection, a part of the bulk seed is used to grow the next generation and individual plant selection is practiced in F6 or later generations.
▪ Used in all crop types.
Bulk Method
9
▪ A modified form of bulk method.
▪ A breeding procedure with segregating populations of selfpollinated species in which plants are advanced by single seeds from one generation to the next.
▪ Used in self- and cross-pollinated crops.
Single Seed Descent