Slide 2:
Seed Production in Cross Pollinated Crops © A.K. Chhabra Basic Concepts
Plant Breeding Terminology
Determination of mode of pollination
Determination of CP
Determination of Apomixes
Apomixes
Back Crossing and its consequences
Xenia Effect
Selection of parents for hybrids and synthetics
MALE STERILITY
GMS
CMS
CGMS
Transgenic male sterility
Chemically Induced Male Sterility
Sunflower pictures of male sterile and restorer
SELF INCOMPATIBILITY
Types
Use in Hybrid Seed Production
Heterosis, types and estimation TOPICS
Slide 3:
Some basic concepts
Plant Breeding of © A.K. Chhabra
Slide 4:
What is a flower? © A.K. Chhabra
Slide 5:
What is a Self- Pollinated crop? © A.K. Chhabra Plant Homozygpous
Population Homogeneous HOMOZYGOUS HOMOGENEOUS NO INBREEDING DEPRESSION
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What is a Cross- Pollinated crop? © A.K. Chhabra Plant Heterozygous
Population Heterogeneous HETEROZYGOUS HETEROGENEOUS HIGH INBREEDING DEPRESSION Pollen grains EXAMPLES:
Maize, Rye, Bajra, Sunflower, Castor, Niger, some strains of Brassica campestris, Sugarcane, Hemp, Hops, Alfalfa, White clover, Red clover etc.
Slide 7:
Seed Production in Cross Pollinated Crops © A.K. Chhabra No seed in SI type SI types my set seed
(late season pollination) Seed is produced
Slide 8:
Distribution of Flowers © A.K. Chhabra