A novel method for producing plant hybrids

A - Human Necessities – 01 – H

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A01H 1/02 (2006.01)

Patent

CA 2221103

A novel method for producing plant hybrids, in which plant varieties, hybrids, strains, male-sterile lines or individuals and self-incompatible lines or individuals have become male-sterile or self-incompatible by changing the growing environment and the tissue cultural condition of them. Then crossing with male-fertile varieties or native varieties, strains and hybrids to obtain hybrid seeds or multi-cross seeds, and forcing the male-sterile or self- incompatible individuals self-pollinating or restoring its original growing conditions to obtain inbred seeds. Inbred seeds may be obtained under male- fertile or self-compatible condition, and hybrid seeds may be obtained under male-sterile condition by crossing with male-fertile or native varieties, hybrids and strains. Resuming the fertility of male-sterile lines or individuals to propagate seeds by self-pollination, and crossing with male- fertile varieties, hybrids and strains under male-sterile or self-incompatible condition to obtain hybrid seeds or multi-cross seeds.

Nouveau procédé de production d'hybrides végétaux, dans lequel des variétés, des hybrides, des souches, des lignées ou des individus androstériles ou auto-incompatibles, ou devenus androstériles ou auto-incompatibles par modification du milieu de culture et de leurs conditions de culture tissulaire. Un croisement est opéré avec des variétés androfertiles ou des variétés, souches et hybrides natifs, en vue d'obtenir des graines hybrides ou des graines issues de croisements multiples, et on force l'auto-fécondation des individus androstériles ou auto-incompatibles, ou on reconstitue les conditions de culture initiales pour obtenir des graines intra-cultivées. Ces graines intra-cultivées peuvent être obtenues à l'état androfertile ou auto-compatible, et les graines hybrides peuvent être obtenues à l'état androstérile par croisement avec des variétés, hybrides et souches androfertiles ou natives. On rend ainsi leur fertilité aux lignées ou individus androstériles, ce qui permet la production de graines par auto-fécondation, et on croise des variétés à l'état androstérile ou auto-incompatible avec des variétés, hybrides et souches androfertiles, en vue d'obtenir des graines hybrides ou des graines issues de croisements multiples.

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