Principles of Plant Breeding (2+1)

Cytoplasmic male sterility

• This type of male sterility depends on cytoplamic genes but will produce seed if pollinators are present. The F1 seeds produce only male sterile plant, since their cytoplasm is derived entirely from the female gamete. The cytoplasmic sterility is advantageous in certain ornamental plants. It also useful in producing single or double cross hybrids in species where vegetative part of the plant is commercial product. It is unsuitable for production of hybrid seed in species where in seed is the commercial product.