Natural hybrids between cultivated and wild sunflowers in Argentina

MARIA SOLEDAD URETA,, MIGUEL CANTAMUTTO, ALICIA CARRERA, CARLA DELUCCHI, MONICA POVERENE

GENETIC RESOURCES AND CROP EVOLUTION

Springer Netherlands

Año: 2007

0925-9864

Abstract Two introduced wild species HelianthusTwo introduced wild species Helianthus 9 annuus L. and H. petiolaris Nutt. have become wide- 10 spread in central Argentina and overlap the sunflower 11 crop region. Intermediate off-type plants between the 12 wild and cultivated species are often found, which is of 13 concern because of the recent release of imidazolinone 14 resistant varieties and the likely use of genetically 15 modified sunflower cultivars. The progeny of 33 off- 16 type plants obtained from 14 representative sites of the 17 diffusion area were studied to confirm hybrid origin. 18 Germination, survival, morphological traits and days 19 to flowering confirmed hybridization between crop 20 and both wild species, when compared to eight 21 accessions of typical wild plants. Some progenies 22 were presumably crop–wild H. annuus hybrids, some 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 10 spread in central Argentina and overlap the sunflower 11 crop region. Intermediate off-type plants between the 12 wild and cultivated species are often found, which is of 13 concern because of the recent release of imidazolinone 14 resistant varieties and the likely use of genetically 15 modified sunflower cultivars. The progeny of 33 off- 16 type plants obtained from 14 representative sites of the 17 diffusion area were studied to confirm hybrid origin. 18 Germination, survival, morphological traits and days 19 to flowering confirmed hybridization between crop 20 and both wild species, when compared to eight 21 accessions of typical wild plants. Some progenies 22 were presumably crop–wild H. annuus hybrids, some 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use annuus L. and H. petiolaris Nutt. have become wide- 10 spread in central Argentina and overlap the sunflower 11 crop region. Intermediate off-type plants between the 12 wild and cultivated species are often found, which is of 13 concern because of the recent release of imidazolinone 14 resistant varieties and the likely use of genetically 15 modified sunflower cultivars. The progeny of 33 off- 16 type plants obtained from 14 representative sites of the 17 diffusion area were studied to confirm hybrid origin. 18 Germination, survival, morphological traits and days 19 to flowering confirmed hybridization between crop 20 and both wild species, when compared to eight 21 accessions of typical wild plants. Some progenies 22 were presumably crop–wild H. annuus hybrids, some 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use H. annuus hybrids, some 23 originated from the cross of cultivated plants and 24 H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use H. petiolaris, and two were the advanced generation 25 of a cultivated hybrid. Hence,morphological traits are a 26 good clue for the identification of spontaneous hybrid 27 plants at field. The results indicate that crop–wild hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use hybridization and introgression occur at various places 28 in central Argentina. This fact may represent a way to 29 herbicide resistance escape and future transgene 30 escape if GM sunflower cultivars are released for 31 commercial use