US PATENT SUBCLASS 800 / 271
.~ Method of breeding using gametophyte control

Current as of: June, 1999
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800 /   HD   MULTICELLULAR LIVING ORGANISMS AND UNMODIFIED PARTS THEREOF AND RELATED PROCESSES

260  DF  METHOD OF USING A PLANT OR PLANT PART IN A BREEDING PROCESS WHICH INCLUDES A STEP OF SEXUAL HYBRIDIZATION {11}
271.~ Method of breeding using gametophyte control {3}
272  DF  .~.~> Via a gametocide
273  DF  .~.~> Via self incompatibility
274  DF  .~.~> Via a male sterility genetic trait

DEFINITION

Classification: 800/271

Method of breeding using gametophyte control:

(under subclass 260) Method wherein the stable or transient change is obtained through any method which interferes with the natural process of pollination.

(1) Note. Proper subject matter for this and the indented subclasses includes methods such as preventing or controlling pollen shed, manipulation of dichogamy, etc.

(2) Note. Dichogamy is the maturation of stamens and pistils at different periods, thus insuring cross pollination. Protogyny is that form of dichogamy in which the stigma matures and withers before anthers of the same flower ripen and shed pollen, contrasted with protandry wherein the anthers mature and shed their pollen before the stigma of the same flower becomes receptive.